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UMI Number: DP70423

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Tht writer to imply todtotoi to ir» !• 0* Stark, under itom e&gnriftotoKi th is mail m i iniitoetoi, toy to# perm©to m& fgmi&mui Ini# md iBsin^^ittiMS# to #fmy ptote a# tt&to yeaaawlu toe

guidance daring th e p ast to a r year* mm beet to n p r a t o to. t to

#141 toafeto amrtogs * to e to toagb t m am l e t t e r , to to # 1 toeaan

a a t o m * *

Ackriowledgjaent to tom t o to fir* t* I* flteeti, Dr. 4* Kraut?,

tod Prefeeeer K» 4# Matttom tor their constructive criticisaj and

f i n a l l y j tot mdtoy ifwiM t o t o t o mprme toy etoeere §yatotol**

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Page

A nalysis o f Variance o f th e E ffect o f Time o f P lanting mi Ihnfeer o f Storage Boots* S ise o f Storage Beet* a 4 Cracking o f Maryland Golden and Jersey O ri^ a Snoot Potatoes. i f

E ffect o f f$ m o f H u ttin g on fie ld * Bmafcer o f Storage Hoots* Sis# o f Storage Hoot* and Cracking o f MarylandIWIAmk *m*t JttPitt? Stf&et lttat@9fl* CliOtOV’* * * I S

3* A nalysis o f Yfcr£aii@e o f th e E ffect o f f t o o f M an ttn i4MM fEoeSfcjftak iWkOadl t&fSwtatt 'fckiMe &k<F" Sn■OeOAkSk SaiSS "IttelMOBfcsB -Sa-dPWi £«mW4MK£ V®sBHW|f sKBlB JP*5HBIe(HF W AldiHd'tNIp Watland and Je rsey C^ttrgif Sweet Potatoes* (lf$Q ) n -—■~- IS

4* A nalysis o f Variance o f th e E ffec t o f Tin* o f P lanting on Sis# o f Storage lo o ts o f Iftry lan i Golden and JerseyCSOltgO SWCSt FOt&tOee* (If5 ^ j '' ■ r:: :TT—-‘~-Tr'.'''- "Tr ir'r-i-inrr'r .■“r-Tr-i-—rrr-r-m—

5* E ffec t o f f ia s o f P lan ting on fie ld * Grade* and Sloe o f Storage lo o t o f M sylapd Golden mid Jersey Orange Snoot Potatoes* 20

4* E ffec t o f f ts e o f P lan ting on th e ioafcer o f Storagel yt s o f ISnyXjHsd Jersey Orange SweetPotatoes* (X fJ0 } ~ ~ ........ ...................— — — --------------— n

7 . A nalysis o f fm & m m o f th e E ffect o f H U . Spacing on dumber o f Storage loots* S ise o f Storage Meets*SfcwfeA& «*m *hl 4k. 4P k SkmMtte s 'SkMk S f eik K 4smkMk Sbw%ee f^MMaeemam vTWSMUM ©* BO yjyHFffB yojWlwl wlO vfETwwjr Wwigs *» *■jjwwes reeawoes#

i* E ffect o f M il S p rin g on fie ld * idd*er o f Storage loots* sAq* o f Storage Hoots* ema C rteklng o f limy* land Golden and Jersey Orange Snoot Potatoes* (1949)--------- 25

f • A nalysis o f Variance o f th e E ffect o f M il Spaelng mi fie ld * Grade and la sh e r o f Storage lo o ts o f Marylttad Golden a sse t Potatoes* (1950) ---------- 2?

10* A nalysis o f Variance o f th e E ffect o f M il Spacing on th e S ise o f Storage Boots o f M&tyland Golden

(1950)-------- *----- —------------------------------------ 27

XI. E ffect o f H I Spacing mi fie ld * Grade* and Sise o f Storage Boots o f Maryland Golden Sweet P otatoes.(1950)-— -------- 28

t i l

mm m tables (cmmmm)

IS* If feet of 1111 Rawing on the dumber of Storage Hoot® of M^ItaA Gallon Snoot Potato#®*

13* Analyst® of Variance of Uni Effect of Moths* of Propa-«t*iiL€*Kia on Mvmufo&m ©# £&ax*&&© B e e t® . «*> ©# ! ! * « • * * B © # ta .

mA Graefctag of Maryland GeMen Snoot Potato#®* (1949) ~~ 24* Iffect of MkMt of Propagation 0 1 TteM, M o of

IS* Analgr®!® o f Variance o f th e fttftosl o f Vine Ironing

Snoot Potato#®. ------------------- » - | t

If* tf f o e t o f Vine Craning on T ieM , tM » « and S ise o fStorage Boot® o f ltep la i* i Golden Snoot Potato#®. (1950)— - | |

IS* £ f$aet o f Ha® Pruning on M b e r o f Storage Boot® o fJ te f ’t e S Golden Snoot Potatoes* 33

If* Average Bian feo|NMratBuPo a n t foe*o f Ten Tno-Wook W io S o Beginning Hay 6 and May 11la 1949 mat 1950 leapeet&fely* •■ ------- »■-------- .-««...—-- %

20# Average T ield o f Storaf® Best® pan limit la Gram® o fMiiipMiff m¥»>rfS uSoffi"! -orMiitJ# omNtoKOMo WmooSonS,-,S'Oh* tyi n-Mitr eoaifHmFjf iiywiim ^lalRMi HfTO n w P ^ w w pp ofmrmww&lMp I’AWiMtiVSM

intonale Stfiytl g aty 1fimw* after M*^4ngT.«,,.«lll.l.ll<....>..M«.,,l«.IM- jg

S3W Average tPHIlgiit pen Storage to o t la Gras® o f Marylaadii^hm| #or<oy or**1 VVtfi iHHLoe fia a to d a t Peer

S ta rtin g S ts M o a t t a r W anting.— ... . .... 42

2 2 . a m rn m e m o f IBnp^fii^ir®®® locMBBnalatoS Bohn®®® P lan tingDate® end Sttoceoeiv® Sarveot® i9 5 S t. — 11 tn -nr-T- -w- T-n-nr At

SI* Square Boot® o f th e im m m he ig h t per Storage Booto f Hwylaod aset ^w owy Orange m o at Potatooo

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StorOijpo Root®, Sis® o f o f m ^ rio o i Soirnm snoo

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fft#> *««>*A w | p 6® wBfll SwiMb. JSKWWwKWI in and Citonine o f Cr&oked frani

i u h ^ ttii -*4. 'nin............... . ..... ...P H W v i i ! P l l W I W W P l W P i ^ w w ‘ W l » » W ' J ' n il m i III u .i HI II

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r* &kzq&% o s A iipjiP^iiyp Uptake o f th© apppB' m w o * '

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id

H S f OF nOBBBS

3U lean and p m iid ta tis ii* fo r each o f tern fc*©~week p a v la is beginning ittQr 6 ift X949 in i H y IX in 37

a* Average jieX d i f sto rage roo t* p e r p la n t o f Maryland GeMen and Jersey Orange ra id e b iss p lan ted a t faNf sue ©essive d a tes i n i harvested tTiffMSfttiif in te rv a ls

393* Awrftg# tfolghfe jhnf ff%jjPOTfc roof* ot Golilflsi

S t fSUlT aSSBSee** s ir e dAtfff i i4 harvested S t teo-eeek in te rv a ls start* ''

4* I 9 ^ p y ie ld i f sto rage ro o ts per p lan t o f seven

a t *4y successive d a te s s ta r tin g «rfir afterl^ant^ng*- gL

5* A fsrigo Height p e r sto rig # ro o t i f M M SHSSt po tatov a r ie tie s p lan ted m $&y f f uni i t s ixs n e o iiii.f i da te s s ta r tin g sty v e s ts a f te r »*■- 54

4* fasreasis in th e ssdglhh per i&orage ro o t S trin g tuo***seek yor t sds i f seven sesoh po tato v s r l s t ie s p lan ted on Map $$ and harvested i t Bix successive dates

A m A f 'mb a u A iA hM I d M t A H k 4 ^ , 1- A M l I l 4 t t t lH> _. ^ . . .. . . . £Tj£^starting six wseJm after »•■»'»» ■ »■» ■»■> 50

7* D issociation o f co rtex in a yeang a to n e s r o o t * ~~~~ 40

3 . A shallow crack in eo rtex o f a yenng sto rage root*—■—— ■----- 40

9* A crack p en etra tin g th e catabial rin g in a youngsto rage 40

10* M erlstem attc a c tiv ity around a deep crack M l fe ro a -tle n i f feseM^g m ye»i«fr t 42

1 1 » # * f t K M u if e -________ -.....■.. ...... ......... .................... -............ £ 3

* S d h ■-=■ - i — at^J& » IwL.^ftib^lK: .imi.^3 . . . . . . .

13. A oc fiXstel r 4^414 stor4ig4 root i4wwfy'Tt£ a atscon**

14* A |^ a * y ^ 4 '*]|: | | i n t i fp f f f f f1' a c tiv ity — -----nxrr-i 1— 44

yU

urn o f nmmm {omnmm)

13 m la& eraal appearance o f Maryland Golden and JerseyOrange tis su e s showing various degrees o f fs o life ra tio nwhen subjected to d iffe re n t le v e ls o f teaperatiare andh taaid ity . ------- 65

16* P ro life ra tio n in Maryland Golden tis su e s a t 65° P* andre la tiv e fcmmia* ty —• , ... - 66

17* Hoaid tis su e form ation (above arrow) in Maayland. G oltoia t 85® F* and high re la tiv e huat& lty »— •--------~ ~ — --— 66:

IB# Absence o f wound M asses in Maryland Golden a t $5° F*and loir re la tiv e h u m i d i t y # — — ... 66

If# p ro life ra tio n in Jersey Grasige tis su e s a t 65° F* andhi gh re la tiv e he^M ity *'-"O’-*-"*— 66

arrow) in Jersey Orange a t 85® F# and h i^ t re la tiv e hum idity. - - — — — 66

Zkm Meand tis s u e form ation (above arroir) in Jersey Orangea t 85° F* and lew re la tiv e hum idity -------«—-■ ■»■ ■■>■ 66

22# Cress aectiona in young sto rage ro o ta (3 sm* dianu)o f Maryland Golden and Jersey Orange v a rie tie s* ----------- -------- 68

23* Cross sec tio n s in young sto rage ro o ta (6 usa* dianu)o f Maryland Golden and Jersey Orange v a r ie tie s showing development o f p e ricy c lic parenchyma. -«».■-> —- 68

24* Croaa sec tio n s in natu re sto rage ro o ta o f MarylandGolden and Jersey Orange v a rie tie s# -*- 68

25* C aabial singe in natu re sto rage ro o ts o f MarylandGolden and Jersey Orange v a rie tie s* —— - — — 7©

26* Secondary oawMiBw w ait* in mature sto rage ro o ts o fMaryland Golden and Jersey Orange v a r ie tie s #-—— 70

27* Secondary <*!*»b4,Mp» o rig in ^ d n g in th e jmy lw parenchymao f Maryland Golden and Jersey (Grange sto rage root s*— 70

28* E ffect o f tem perature on th e w ater uptake by th e t i s s u eo f Maryland Golden (meet potato* — — —* ~ 85

a

hm been reported regarding th e o f cracking. Kaay o f th e incon~

s is te n c ie s found in th e lit« ra tu re testa be be due, p rin a riay , be th e

general lack e f inform ation m th e growth behavior o f th e sweet po tato

te iiie iij neve undertaken in X9H0 in en

e ffo r t be explain on w< bases, th e v ert fl~

i s erecldiig ebky-*(**Vfl in ?% f as v e il a s be be th e fhndaastt&sl

inform ation ftee w iv^^g %be g^yeio l#jgy fyyt b^jftele^y involved in gftatbh

B» otodlw n fw M herein m dirUod 1st* fowr Mefclanst 1*

rwajxnMa t* 4iff«ront «mltnwa jpneUttm, 2. growth ofcudioo, 3. hi*~

to log ioa •todioa, lo t 4 , atodlao of noiotwro roUtlono within tho plant.

HOTtf Of MTMMkWBM

ftom l i te ra tu r e concerning th e e ffe c t o f th e d a te o f p lan tin g , h i l l

Spacing , SXld aSthOdS o f yTWpSfflltlfflO hAS bOSS prev iously ©OVBflfed by tb s

w rite r (6)* l i t t l e inforsiaiion ie found in th e l ite ra tu r e regarding tho

e ffe c t o f v ine pruning on th e y ie ld and eiy* o f sweet po ta to es* G arcia

(9) in lo o Mexico and S tarnes (35) in Georgia repo rted considerable do*

ftltim in t he to ta l v ia ld bop aero tduwi sweet po tato mitamkm wore Braned

Growths

dt oaa* oofeoo Ofcwti* Sbssfcew&aswki k sL » as.’ eseeewedl e aaS dtwesa dH& MB&aw eaes tf’wweees siL w®. sew d^*wo3rPd>" SeiwSiSi awRoMw*3lT WStaPjf sSwPs*fT2**i*2Pwl- ^eaSS jpPHPaMWwb- wesawa fiMPweFJfcwp@8|Pwlw'

o f t he Tfrllm r Je rsey sweet jw ts t e , f^ jw ts were t m rjtyp*?.itydvTi to tho f ie ld

on Jwm 1 , and a f te r 8 weeks storage ro o ta o f 0*2 to 0*5 inch in d is a s te r

were observed* On October 3 t tp id e ^ ii had 12- 4ia»ia*MMi rfiAwig*

ro o ts and had a fib roua ro o t system to a working depth o f 51 inches.

fa th e knowledge o f th e w rite r , no work h a t been reported th a t in*

v eetig ate# growth and d sfs lsp w n t o f th e sweat po tato sto rage ro o ts , a s

a ffec ted by v a rie ty , tin e o f p lan tin g o r w eather conditions* H arter and

Wil^p iy (32) r epor t ed th a t afi-yfiwy and temper s to res

fo r growth of sweet po tato es a re 15* 35, sad J8® a* respectively* fh e ir

Safer (29) jMadteiitftd as axperisiBnt where two lad s o f Porto Wf-fto spffguts

wars transp lan tod * and siibieebed to low and high ts&pasetisx'ss o f 50**

60^ F# and 70*80° F* re sp ec tiv e ly , fo r a period o f two a sa th s , a f te r

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12

normal and cracked sto rage ro o ts , m arie ta l d iffe ren ces in s tru c tu re , and

»4 ygjmTimwntAi 4.4ftaaaai a c tiv ity in Golden sod Jersey Orange

v a rie tie s*

.jfew44<Mi ©f m oisture re la tio n s ©ixpsrtiasnls to deter®!®©

th e o ffs e t o f various fa c to rs on th e m oisture e©*rbsnt end the. a f f in ity

o f th e m ee t po tato tis su e s to eater*

flie f ie ld mark m i dons a t th e E n iveraiiy o f Harylaad Vegetable He-

farm a t S alisbury , Maryland, share th e plot s were on a

ssiidy loam soi l . Seed steak s o f Maryland Ckslden , Jersey Orange, and

Port© Moo v a rle tie a erne secured from a stock laaintained by th e Mary­

land A g ricu ltu ra l JSaporlzaant Station* Stocks o f A llgold, L-241 (Recently

tim ed Gold Rush), A ustralian Caniior, and B-5999 w e obtained from th e

(^iahojaa, ~ AigH Bsperiisaiib S ta tio n s , and

th e U* %m Bspartaanb o f A gricu ltu re, respectively* As th e po tatoes were

mat ©f sto rag e, they mare esoaisinsd, th ese wiyteh mare d^sss-s td

mare discarded* ^hrm —fo u rth s o f an Inch o f th e p p m im l end o f each

po tato mss chipped o ff in o rder to se le c t fa r in te rn a l o d o r and to break

p ro x iaa l doadnance (37). duet before bedding, th e po tatoes mere dipped

in "P uratised A g ricu ltu ra l Spray 5>$* a t a o f 1 p e rt per

5CXX) p a rts mater*

As th e p la n ts mere p u lled , t hey mere handled and ro lle d in met bur­

lap bags to keep them fro® drying out before planting* A period o f 24

to 4 i hours elapsed bet meen t he fe-fw*** th s p la n ts mere from th e

Hfxis and th e tiffie th ey mere s e t i s th e f ie ld .

Ipis la nd sms plowed $ d isced , and harrowed p reparato ry to planting*

Pft|> MMWrtncfc, e f feti* — wnA * m n m Wl n-nt.ttA **t.-feii l* j>a*M§m s e i w u e s s s e r w s ^ s e t o s e * . w a p ' o s s s p i swgpsmi 4 i * s e e r e ^ r ^s* jaw sii^ ^e sa^ o ^H ^ s ie i s p o s s s e s mw1 e r ^ i o s s o s ^ s ^ ^ a a w e e s ^ o ^ w ^ s

spaced 15 inches a p a rt, i s 32-inch rows* la th e h i l l spacing te s ts ,

J ; j 3

HiI

H nS 1I § 1 I i ■*m i

t

5 |i 1 f

i j I Mn * ; 3?; i 111 * i s*s l ! H i .1 1 4 I i 2 j

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11

II

i ! 11 i

S w et P otatoes.

Y ari«ty

a*»*

V ariety x Wt&rn •

IIf

i f ii3I

; 3& 3i i

3f II

1

ill!1111111 1 . s i i a

3i...Jim i!

j t * j11 ffulfilI n n ,i I

i 3 i | 3 |

11 * *!11 if ] 1 j °tin »i j 111111

IB

Vlriono® o f th e ISffeet o f tit— ©f F3y§SB%jLng oo Xiold* Grade* e—fo—> o f Storage

Fofeatoee* “ ^ S ) 0#^ “ * J w i , r Qrmm* * * * *

Soiree 2/FWaadjOMo

- « r -

V ariety 1 gO-l PMUttUOP*Data f s iS w F * tt8 7 .o * *

I l i . 7 717.0V ariety m M o S 17.2 256.5to ro r (*) 6 j? .o 5 » .5

T otal 17

Grade S W J M P * 195329.5**V ariety at Grade I hALV** 1*507.5**

3£ 4«AA| —i.-k*fc

152*7.5**V ariety x M o at Grade 4 2 J.9 974.0^ rro r (b) 24 «L S 1290.4

T otal S

**Bt®iifie«Bfc « t odd* o f 99U

If

Table In Aaalyaia o f fa**i®aae# g fo o t^ o f B a t o f

ttkidfc fe&aajfeakSBPWW fW K w li

m

Taklm 5# M tmt mt Tim ef PXaatlsg m Xield, Grftd«, and Ils#OS JWMPBOge m&Qm OX yOSilHu «ratt « lf P ^ llpw ^i

(1950)

V arietyTtrfM ]M /a. Av*. V t./H eot

lfS § M riw t M GL U>.

llairylandOb'?/ton

n r n m m m m 22

43.734.8

4 .0

255.0175.4

82.0

54.475.744.2

351.1244.1 SJ2.1

0.410.270.32

JWWfaige 20.8 170.9 44.7 254.4 0 .30

JerseyCslipaiaiae

m@r n M r 25 Mb* 22

15.43 .40 .0

254.7173.0

58.8

83.4324.5304.9

353.7 303.1345.7

0 .31OmKI0.14

A**I*®0 4.3 142.2 105.7 274.2 0.23

A'ferage M r u M r 25* u » 22

28.49*23 .0

254.9174.31 0 4

4 9 ^103.185.5

352.5284.4158.9

0.340.250.19

0 52 t H

Y ield

Uafce x OrndeWstiwt aaS'ar w fSwtifcJ e filXVi^ jS rWEW

43,939.448.5

41.353.8SSeS

iv** nt*

V arietyHat#

0.000.04

0.040*05

m

production o f jw fom * isg a rd ls ss o f th e M s o f ^ ta H n g f th e mrw&m®

©arfgjhrt o f th# #t©rft§# foo t# Jp$SN|©SO& by MfctyljMeid mm tbs©

dftxsM$r OsftftgSf ##41 Ia both v a r ie tie s th f# ev©y©ge decreased trit**

th# d $ |^ | j | plerrfejyig^ ffijth r #gj8fd t© tlm o ffse t ©f tiff# # f pllUSting

o© tiie nasabsr o f steF igo je o t i (Table d)* th e d ft# 111411##%# s ty l le r re*

iB»tt.ii to %h### ©l&ainsd to th a t is* tit# #####! da te o f ^ jttn ting

g a ts o higher to ta l w t e o f sto rage roo t* than th e f i r s t m th e th ird

d a tes butmfnm they# if## n© difference* Ipjrtuten&ly* th«t ya^kay *»f

th e la rg e ro o ts was doew ftflrtfd ty th e d el*!# in th# nIso®*

Of th ff SSSfcH ro o ts IftCjMMfcSOd* Th# XSHNbsr ©f th e jftShO potfttQSS ftftsUtosd

tjyfih th e delay in Th# f i r s t too ffftfitf”!?1* ppg4N:ff#€ #1$##?.. sm k

boro o f s s r t s t potato## ##4 so re fof gfo#1* the# tb s ti& sd p leating* ofeile

th e second #»*4 th ird d#t#g o f piagyfcir!^ jppv h i^ ie r n d M # o f csesaiiBg

po tatoes t hift th e f i r s t placating# <£hi# was tru e in both v a r ie tie s so

in d ica ted ly th e leek o f sig n ifican ce in t l m v a rie ty x date x grade in -

t erftfft^-^ ii o f %h# tiff# o f p lan tin g , t he Jersey Orange verl«"

m s JH# to higfa prodaetleti. o f til# grade w ith lew o f

tb s' imabo p o d s by Jersey Orange whereas th e re was no v a r ie ta l d if f e r -

snee in til# igonbso o f th e wa s i th the

normal growing season, th e v a rie ty Maryland Golden tended to produce

w&Ml numbers o f asarisefe sod canning p o ta to es, w ith com paratively h l&

wmtovt o f Juafcos whi l e Jersey Orange produced a im canning po tatoes

th## sttrisBt pstftbeeft a lew o f jhsdbaNi#

m

Bata obtained in 1949 (6) in d ica ted th a t when M uyland Golden and

Jersey Orange v a r ie tie s were p lan ted a t d istan ces e f 6, 12, IS , tad 24

inches w ith in th e row, Use to ta l y ie ld p er were wee n e t e ffec ted In

e ith e r varie ty* ,1a spacing* o f 6 and 12 inches, however, th e p la n ts

produced mere canning grade po tato es than in th e IS* , and 24-in ch

spacing** th e re wae a d eclin e in th e y ie ld ©f th e Jwwfe© p a d s a s spac­

ing decreased, w hile th e y ie ld d f th e maritet p o tato es was r e t affected*

Of the two v a r ie tie s , Maryland Golden © nlyielded Jersey Orange doe to

whereas th e re was ne v a r ie ta l d iffe ren ce in y ie ld o f th e canning grade

potatoes* Data Shewing th e o ffs e t ©f th e d iffe re n t spaaing* wpest th e

noaber, average w eight, sad cracking e f storage re s t* a re presented in

Tables ? and i* th e number e f sto rage re s t* p er raw decreased a* th e

space between p lan t* increased* k spaaing e f 6 inches gave a h igher

number e f r e s ts than th e 12-in ch spaaing, w hile 12- and 24-inch spac­

ing* gave th e low est xasabers* B a re was no diffareas© between 12- and

24~inch spacing* in ©saber e f sto rage r e s ts p er row* Beth Maryland

Jersey Orange produced xsawber* e f sto rage ro o ts sp4

responded s im ila rly to hllX pacing* F ttrtheraere, in both v a r ie tie s

th e average weight e f sto rage r e s ts increased p ro g ressively w ith th e

in crease in d istance between th e p la n ts , and in each spacing Maryland

Golden produced la rg e r sto rage ro o ts than Jersey Orange* m i l

d id not s ig n ific a n tly a ffe c t th e percentage e f cracking , although t t

v a r ie ta l d iffe ren ce in cracking was very s tr ik in g and in any one o f

th e spacing* stu d ied , Maryland Golden had a aaeh h igher percentage

e f cracking than Jersey

m

$ $£ YlttrltB## ££|!ifts4 ©JT ^ fffPflfflfllEo n M s f e s r # £ 3 i # © I * * g e & * ! • » M s # © £ S t * * ! * g © f e s f c s *

finsl Cracking #jf MWylaisl (Ssl&sii sist *F#i*##3r Qr#ni£# Sweet Foisfcoe*. (1949)

Senre# &/f B S3?wr*n rT;t,,(,®’ ^ B fl'",:rvTimr': jj

ffcpfyo -W||r 3 7341** ©.om# "* ?.22

3 0 .0 WgflPBHP* 943.76**

lap U sS t# 1 0.0003 40*73

'fTsjfdLstjr si 3psc.ty$|j 3 $m 0.1034 71.88

Sprwp 34 435 0.0004 33.97

196*1 S3

♦^Signlflcaarit s i odds s£ f f a l

Table i#

Boots, Sise of land Golden and Jersey

* ^Boobs, and Ci ddag of

Sweet Potatoes.

Held

ii#s*»•»*

?ar*xSpaeing ®5$ xwa*a i$ &»*•

2 4 p*> « M « P & » a *

0 . 0k n * s *

n * » .

0 * 0 *

0 * 0 2

§ . f @ 4 . 5

s * a * n * « # n . s #

I H S * i w a * s # a *

I i11

II i

m

Table 9 . Ana3^r#l« o f 7ftrtance o f th e I f fc o t o f E H Spacing 6®. OlOMtC 01N§ o f OtOlOgC ScOtO o fMaryland GoMen Snoot Fota&ooo, (1950)

l /F................I M jkmml.....................

Steujpoo T i«id Hiwfeor

Spacing a 342*7 3344*5ftflpl 1 ftQtO a 300*4 5445*0Bfcror (a)

T otal

4

#

m * 6 3050.0

GapoSe a 4m * & * 307733*5**

Ir* « r{ b )

T otal

4 344,7 2404.4la

a*

74*4 3495*5

^ S ig n if ic a n t a t old* o f 99*1

M>3o 10. Analyoia of fartanco of Um Iffoet of n i l Spacing on tie Siae of Storage Boot* of Maryland Goldm Snoot J ttE w i, (IfSO)

UfiOBPOO s/ fYayianea*g22Trn",ffl!w*jKT}g'r''gt'oflRPa Ww#j aofcoCMn

a 0,0014

a 0*0001

4 0*0004

T otal I

U$*8« # %% XI. 9* n.s. &#«*

Table la* E ffect o f H ill apmafog OKI th« M i r o f Storage Booto o f GaMm Snoot Potatoeo. (1950)

L . 3 . B . € $ $ o » « * n . o «

29

T*bl» ]} , I M m t of tfco Effort of Hrtbod of

l&SKt SdT ^ f y la r t S6 hS8®i'

( m t )

V FyaM*nm>

JSP§* Wt* * * * * * * *

OMt—JLfc. -. -*•BWttwR 3 to @*9903 473.06*

isfee 3 7S7*** 0.0*7*** 73*9*

R»pH**fcd> 3 w en #* AWWAO*0yfs 43.33

g f^Utt 3 3139 WW iniiFV 37.74

9 314 0.0032 70.fi*

T otol 35

^D tfL M n t I* otto o f U N I «B ignijncnit r t odd* of 99(3.

M MM MM # * • * * •13 S £3 £S £

* » m m 5 5 S iS i 4 4 S i

♦ ## n5#

#m

m m m-i m m m m m m

4jj a t ;

4

Table 15* A nalysis o f Variance o f th® SXfeet o f f te a Franing on XieM , Qrada* sad M b s r o f Storag® Boot® o f Maryland Golden B m «t Potato®®* (1950)

Seorce S/F i S i l lr/: '“ ^ s s r -

Traatae&t i 1U 1.0Bsj&loat® 2 21>?*5 2847*0E rror (a) 4 ifio «JWrriMi 926.0

to ta l. t

Gtade 2 19237*#** 150H8.S**tr®at®8ffit x drad® 4 630U** 7371*3**irm * (fe) 12 132*9 1328.8

to ta l 26

♦^S ign ifican t a t odds o f f i l l

T aM * 16 . A n a ly s is o f V a ria n c e o f th e l f f « e t o f f ia ® F ra n in g o a t t o o f a H o o t s o f M apylaodaWWPvW

S o sa a s w *fiMUfe 1dm- rTl jfiiftaW s i t s / l l 0 9 i

fSN M tinast 2 0 *0115*

B e p lie a t# 2 0 .0 0 1 9

_JHRPWr 4 0 .0 0 1 5

to ta l a

^S lgn iflc im t a t odds o f 19x1

m

$«&!# I?# I f fo c i o f f t m Pruning m Y ield , M i« f m d $is« o f Siorag® Roots o f Karylacd 0©M«n Sw«et fotatoea* (1950)

f^n*lc 34 .1 334.8 78.3 441.8 0.34

Pruned Jaljr 15 ia .$ 314.7 84.9 0.31

Pruned Aug. 15 1.4 210*0 134.2 345.4 0.24

1 .3 .0 . • 55 87.1 8#0» 0.091 .3 .0 . 0 15 122.2 n .o . a*»*

fafcl® 18, I f fo e i o f f in e frm iM g m Wm$m? o f ifeo?o§oBoot* o f Msrylaad OoMon Snoot Potato®®. (1950)

22 473 551tfnii 111 ■ fl ImIw 1 £ITWlWa 9 470 487 1344

Pruned la g . 15 1 tw 949 1472

1 .3 .0 . 9 551 .3 .0 . 9 15

275.3384.5

n .» .»•» .

x x . s t u d io o f m m n

dffM1- obtained I s l% f in d icated th a t tlMt v a rie ty and th e

4 it« o f p lan tin g were th e two main fa c to rs a ffe c tin g th e percent­

age o f crocicing In sweet potatoes* In th a t y ear liarylasd Golden

and Jersey Change v a r ie tie s ware p lan ted ©n each o f fiv e success­

ive d a te s a t two-week in te rv a ls , beginning on May 4* I t e harvested

on October S, percentage o f em M m $ a ta such h igher in Mlpyland.

Golden than in Jersey Orange and th e f i r s t and fou rth date# o f

p lan tin g re su lte d In a h igher percentage o f cracking than any o f

th e o th er th ree do tes*

In IffO f ie ld eaperisionba mere designed to determ ine the e f­

fe c t o f v a rie ty and d ate o f p lan tin g on th e growth o f th e storage

roots* Sprouts o f Maryland GoMen acid Jersey Orange v a r ie tie s were

p lan ted on each o f four successive d ates a t two-meek In te rv a ls be­

ginning on Mast 11* In add itio n to these two v a r ie tie s , Porto Rico,

A llgold, B -5 fff» k-241, and A ustralian Gamer were p lan ted m Way

25. sumyi 1 gisr e ss sh ifted . 6 weeks a f te r e d coEtimssd a t

two-week in te r r a ls u n t i l September 21, except fo r a three-w eek in ­

te rv a l between th e la s t two eajsplings.

sampling use fg^isiBig^ in t r ip l ic a te each v a rie ty , w ith

each ssap ie composed o f te n ad jacen t p lants* i l l sto rage ro o ts were

counted and weighed from which th e y ie ld p er p la n t, th e number o f

sto rage ro o ts per p la n t, and th e average weight p e r sto rage ro o t

were c a lcu la ted .

mri

e*

from

year

to

$S2 II 1

1 Iii

•tft jo

*eos

i

Table If. Average eau Temperature and J¥eetpitatiori Ter Fadi @f Tm Two-Week • Periods iioe Inning iagr 6 and ar 11 in 1949 and 1950 Respectively.

.' ' . " .. .." ~ ~ wMean Mean

bate Temperature tfrecipttation Date T&mpwpM

1. 1'%' 6 - 19 66.3 0.74 iSasgr H - ?%• 24 61.2 3*96

a* Ihy 2D - Jim 2 63*8 2.86 25 - Jhne 7 66.7 1.11

3. Jon© 5 * Juno 16 73.2 1*28 June S - June 21 70*5 1.27

4* 3wm 17 ~ June 30 00*1 0.07 June 2Z - July 5 76.3 2.33

5. Jl*3y 1 - July 14 77*7 1.74 July' 6 - July 19 75*6 2.53

6. m ? 15 - July 28 63.4 0.37 July 20 * -Aug. 2 76.6 2.82

7. July 29 - Aug* 11 78.8 1.85 lug. 3 - Aug. 16 73.5 0.f0

8. Aug. 12 - Aug. 25 73.3 4.17 Aug. 17 - Aug. 30 75.4 0.14

9. Aug. .26 - Sept* 8 70.5 2,59 jsug, 31 * Sept* 13 73.8 2.25

10. Sept. 9 - Sept. 22 61.7 1.19 Sept. 14 - Sept. 27 62*5 3*02

^Teiifjerature and p recip ita tion for 1949 w©r® obtained from the o f f ic ia l records o f th e II. S. Department o f CoiaBierc© (C llnA tologieal Bata.)* while the temperature and r a in fa ll in 1950 were measured at the Vegetable Beseareh Farm at Salisbuiy*

37

MEAN TEM P. l* F )

801950

70

60

RAINFALL ( inclws) I—| 1950

2 3 4 5 6 7 8 9 10T W O - W E E K PE RI ODS

fig u re lm Msazt te ^ e ra tu re *xxi p re c ip ita tio n fo r each o f ten t* o - ireek perioda begkm iag Kay 6 In 1%9 and Kay IX in 1950*

# yL'Tablo 20* Avorag© H o ld ©£ p e r EU nt I© l w ©fMaryland muf JofjMy Qgf^g1* IlsrlstJbw ISMi&otft

04 ©2— tiL^ a #4- Ctt *t~*4J r a w K i f s t a r t in g Mac W *«iw s l w fvum taaag*

iWgyiMwroi.

J#jr H 0 .4 i 0.2 1*3 t X*2 44 >2 i 34*1 217*3 t 24*2 321.5 £ 50*3 4 5 7 .« \ a Mi

i* r *5 4*3 * 1*0 2)*0 © 4*0 41*2 i JZ*j 1 7 9 - £ 31-3 s a a j t / t 226.0 m . i t 77-7

Jane 2 f * t * 0*4 m * $ 1 17*5 211*0 t M U * ..imm i * to r n - : 3 U

Jane 22 f * 9 i 1*3 39-r' i. 9*5 tXhJL t & L6 ® 0 .3 * 4 M

Jwwegr Arango

N * 11 0 .9 t 9 .7 7 .4 t 8*7 38 .9 £ 1 0 ^ 336.6 1 13.3 342.6’ t 40.3 » J t 66.5 728.3 t 334.4

* * 8 5 5.3 t U 34.0 t 8.6 96.7 t 6.8 aHf.n t 2 9 JI 4 f f4 3 * JML 673.4 ft m . 0

Am 8 I W t 6.1 86.2 t 30.6 196.7 t 69.3 968.0 •jgpVWw JJJ 40 .1 * § .7 j t : j 3 * 8

Jan* 22 1 3 . l t 3*6 51.1 £ l l» f 133.5 £ 39.6 a ttu o * 1 1 3 .4

39

GUS.PER

PLANT

900800

700

600

M A R Y L A N DG O L D E N

500

400

300

2 0 0

100

800

700

600J E R S E YO R A N G E

300

400

300

200

Ist PLANTI NG 2 nd P LANTIN G 3 rd PL ANT IN G 4th PL ANT I NG

100

W E E K S F R O M P L A N T I N G

o f «t©ragev a r ie tie s p lan ted

and harvested a t two-week interval®

o f Maryland Golden fo u r eacceaaiv* d a tes

weeks a f te r

Wirt

co

&si&

trt&

s th

e ef

fect

tf

Table 21* iwmrstj© Height per Storage Hoot in Grams of Maryland Golden arid Jersey Grange Varieties Planted at Four Successive Dates and Harvested at ffco-ieek Intervals Starting Six Meeks After Planting,

P lan t ing Bate o fBate . ':rJb&s SB .........Jggix-»____ Ju ly 20 ...........&!£*. 3 ....... « £ • ■17 ;...r . . . m k * . f r ... ......jb L .

M aryland Golden

3 .4 t 1 .6 9 .6 t 2 ,3 23*8 + 0 .4 57.9 ♦ 17.2 68 .6 i 7 .1 161.3 £ 15 .7

1 .5 ♦ 0 .6 7 .2 t 5 .6 12 .1 t 5 .6 31.4 t 4*6 3 .7 1 1 0 .l t S .1

2 .0 ♦ 1 .1 17.6 t 0 .7 34 .4 t 6*1 56.7 t 19.9 75.4 £ 34 .0

3 .1 1 0 .4 7 .9 * 2 .3 22,6 t 6 .4 48 .5 £ 19.6

Je rsey Orange •

2 .7 t 0 .4 8,1 t 2J* 20.8 t 2 ,3 46*9 t 3 .7 6 7 .9 * 17*3 109.5 t 16.5

12. t 0*3 6*0 * 1 .2 13.0 t 1 .3 33.8 + SUB 51.9 t 14.3 86 .9 £ 4 .1

2 .6 i 0*4 11.3 t 3 .4 22.4 t 0 .5 40 .0 * 4 .9 66.0 £ 33.7

2 .8 t 0 .8 7 .5 i 1 .3 16 ,5 t 10.2 30.2 £ 30 .0

Mgr 11 1 .3 i 1.1

2ftgr 25

June 3

June 22

la y ix 0.6 t o . i

f ty 25

June 8

June 22

42

6 M S.PER

ROOT

160

140

120M A R Y L A N D

G O L D E N00

80

60

40

20

120J E R S E YO R A N G E100 -

80

60 -

40

----------- I st PLANTING — 2 nd PLANTING------------- 3 rd PLANTING------------- 4 th PLANTING

20

191612 141086

W E E K S FROM PLANTING

H®»r* J. Tha arartgo aaigbt par atorage root of Mujrlaad Goldan and Jwraagr Oranga awrlatlaa planted at four auceaaaiaa dataa and harvaatad at two-*aak iotamOa atarting six make aftorp lan tin g .

& were eata&a&ed fro® growth curves where th e a c tu a l w eights w n p lo tte d ag a in st th* a c tu a l age « f th* planta* Th* ]|

th a t th * e ffe c t o f til* tiise o f p lan tin g on th e growth re t* e f th e

Coaparing £ values fo r th e two v a r ie tie s I t a u g r b © a e o n th a t in th e

111* reverse was

of the growth rate is*

a m # to coopssunt* for the

gtanona, ind In belli vari“*

mm definitely decreased w ith

End to accelerate the pwwtb

to determine the rela-

of the sweet potato stor-

of the root at

certain He* |i*^Nhr

i, while In the thir

true. It is observed that the

to the delay in _

difference In the lengths of the

etleo the final

the delar In planting*

Since th* delay in planting woo

of the etorege root, i t would be

tionship bottom

age root* 1Me woo. don*

harvest with the ace^olntsd hoot unite

lines of 70# 45# 40# 55# 50, 45# sad 40 degree* F# ware mood, and

summations of day«'d*sr*** between th* date of planting m l each har­

vest date ware determined* the** data are posmted in Table 22*

Summations of d^*d*p**aa were tlm correlated with the square root

of the average weight per storage root (Table 23), m l the correlation

till

f abl© 22U m ssm kiana *£

8

i*em m r » * # W0JP>O

<0 >0«0 «Q * $ • f t* «*«**!

fr* *»*-«>•■-4«&,

**l I***. * _§

«rp|| *1

*1

Ii ni

i i ii11

li t M

i K i - l h '1 I

Ig

i 1 1 1 i i l l i i i l i i i i l l i i

47

ffiftjif.f 9^t ©X O orr@ lsli^ ff>4 m f s l s t s fo r©f Say~Ik gWMMI A<ft it»Mtti.«fejMi 4&09© 0iJfitar©&t BilftfrT.1 Hflfft amitim Sfflmmi «># fefea AYarag© Ifil rht wh* Stara^© Boat

©£ WvrylMa&A, G©34#b and Gra&g© Swot Pot*to«3 Planted©n M«y 11, Ifep 25i ta© t 9 «od Jan© 22, and Karroated at Tn©~fte©fe Interval# lamfe© Aft#r Plant lug*

7 0» r, 0.000 1.30 0.003 1.40

4 # ?. 0.945 1.79 0.951 1*94

40* F. 0.954 1.07 0.960 1*95

55* F. 0.963 1.90 0.973 1*11

50* F. 0.973 3.16 0.905 2*45

45* F. 0.975 3.19 0.90* 2*55

40* F. 0.975 3.19 0.989 2*59

D ifference lYKjaired £®f* iffffff ft-iM'mff batw an any two j | * fl*J9

Table 25* Average tm im ? of Storage Boots per Hast of Upland. Golden and Jersey Orange Sweet Potatoes Planted at Poor Successive Sates and Harvested at Two-ltofc IntervalsStarting Six leeks After Planting.

Hinting ~ .........................lit©..of 'Ytovest"'■fl**................*ww.». JvObr 6........ JMbrao : tot... 3 . Jug. 17 . Jte. 31. Sect. 21

j&rylRnd Golden

l«2r 11 0*5 a 0*4 1*0 + 0*6 5*0 t 3.0 5.0 t 0*9 5.7 t 1*2 4.7 t 0*f 5*8 £ 1.3war 25 2.9 t 0*9 3*5 t 1*6 5*1 £ 1.1 5.0 t 0*7 6.5 t 1*6 5.7 t MJune 8 5.3 t 1*6 3.9 ♦ 1.0 6.2 4 5*0 7 .1 1 1.3 6.8 1 1*7June 22 3.3 i 0*8 5.1 t 1*0 5.4 £ 2.1 6*2 t, 1*3

mpr 11 1.5 t 0.6 2 .7 * 0 .4 4*8 +0*5 6*2 £ 0*4 7 .5 ♦ 0 .6 0 .0 * 2*3 6 .6 £ 0 .6la r 25 4 .5 £ 0 .8 5*6 ♦ 0*6 7*0 f 0*6 7.2 * 0 .3 9*1 £ 2 .1 7 .7 £ 1 .0June 0 7 .0 I 1.6 7.8 £ 1.5 8*6 t 1 .4 f .2 t 1 .5 9*7 £ 2 .1JUne 22 4*6 £ 0*5 6.8 ± 0*8 7 .5 t 1 .8 8*5 £ 1 .2

49

rtUinaant of % ] » fin*l matter of otorogo root* « m H t d m M f c j r

fit# 4^1fy in *>44.? th e th ird i&aeiiiiigj aod mm sXemsr #g® ®

in th® fo u rth planting*

rietiee produe® etormg® root® on th® adrentiticam root® developing at

th® nodes ©f th® vine®. She#® Tin® potato®® nor® first observed in

1950 at th© August SI sampling* Although no ©raeldag 0©-

curred in X950, 34*5 per eent of these Tin® potato®® m e found to ho

cranked in Mftryiani ^Mon ®y»a 33*5 pen ©sob in Jersey Change. It 1®

interesting to observe that th®#® vino ootatoo® nor© i nitia te d dorian

th© only drought period of th® season* ehich prerailed from August 7f j » 9 ^ r f - « a » h a » t 1 . wif ai®mmes®aMm®em!w ®m

C* If feet of Variety on Omth*V9sSwiM ©MHi®®>iMd4® a i® 1® ekjSsddd* dd? , ®k !Ofc**i*JI mMkS f f t t M S S w * *m©feITLvW v# 5Mf6*sPP 3J* <®3LS3HB W f'wwEyjJIOBl UmMSMK* mm vwvff w<iigf|

sere slanted on Mtesr 25* iota sere i9fet®ir>k0 on yjlold ©lent. aver*db jma M ikd’ jvkbksh m # Jh®®!®!© StafeekW' Osoajdl aiL jr ®h i®m h Ii m a ©eeetehdt- e sfejue® suk Sfcetod?'®ge w®igM& per vwhhriv *wwvji mb uumuva w* Bwi’agt iwvv per p**««

throughout the growing season of IfJKb Id Table 36 and Figaro 4, data

on yield par plant aye given» sed indieat® that th® rat® of increase

In yield differed idth th® variety* Compared to th® other varleit®#*

Aftgetd ha# th® hdghoot yield per plant at the first four vt^yl 1®g#

%%! thw i iflftfiH th# d**®® *!#® ojf th® tmmsn* AimbvaIjLsn

Caimer gar® ©OEparatirely low yield® during th e f i r s t fie® h a rw a ts

follow ed by a© l®®iHfaeT in y ie ld duiHlpg t h# la s t th ree m ^he o f th e

lieryland Geldon* Jersey ChOBge# and behaved ser© o r

1mm s im ila rly , id th Jersey Change giving th e h ighest yield®* fort©

Eico ©aa<i t » m shitted **1®#® reaesiblance, th® fotsm r giving td g her yield®

o f yin® optatoee* > Karrland Ckslden m d Jereey Orarige Ta»iiiSBmiiii'i D#iiSfflmiii jpaLiiSBiom ^w®gp lWJp,H w ¥ ■

fable 26* Average Yield per Plant in Grma of Sov@n farietiaa ofBurnt Potatoes Planted m May 25 ®ai Harvested at SixSuccessive Bate® Starting Six Weeks After Planting*

P eriod f^sna. P l m t i m i to .H arvest f a r le ty ........................ ."IT m S k a ' " ''8 'w S S T n r ~ ' 'M w bS » ,'“' ''l 2 w o ® k &

Maryland Golden 4*3 t 1*0 20.0 ± 4.0 61.5 t 30.0 179.7 t 31.3 320*2 t 116*0

Jersey Orange 5.3 t 1.2 34.0 t e.6 90.7 t 6.6 242*2 ♦ 29.2 450.2 t 34 .6

Port© Hieo 3.1 + 0*3 16*6 ♦ 7.9 71.9 t 7*0 189.2 + 54.2 357.6 t 133*4

Allgold 16.9 t b.9 34.5 t 32.4 H5.4 t 13.1 m .a * 63.9 m *? t 42*7

B-5999 3*0 f 0*6 23.6 + 11.3 2S.3 t 7.9 206*2 + n 6 * 6 389.4 ♦ 31*9

Ir-241 2*6 ♦ 2.2 15.0 i 6.1 63.0 * 11.8 191*7 t 44.3 431.1 ♦ 323*2

Australian Caimor 1.9 * 3-4 13.6 ± 0.5 55.4 t 8.9 X5B.9 t 13.4 264.8 * 43*3

t n * s

»

6M S .PERP L A N T

700

600

500

400

300

ZOO

700

600

500

400

300

ZOO

100

/ '/ // / / ----- ---------- P O R T O R IC O

/ ? / -----------AUST. C A N N E R

/.V ----------- L - 2 4 /y /

MD. GOLDEN JERSEY ORANGE ALLGOLD

e 10 12 14WEEKS FROM PLANTING

IT

f t p N 4« Asorag# grioM o f p&tato w i e t i e s successive d a tes

ro o ts |m p la n t o f m um m oot on Hop 15 hmrrostod a t s ix

s ix weeks a f te r

o

52

during the fir st three harvests after which Ir-2A1 began to show a

greater rat# of increase surpassing Fort© Ho# and ending the season

with a higher yield*

FarietaX d iffe ren ces in jie M are due to d iffe ren ce in th e s is#

and number o f th e sto rage ro o ts , fab le 2? and Figaro 5 p resen t th e

ctaiiaila&lv* in crease in th e average weight per sto rage ro o t in each o f

th e seven v a r ie tie s , p rev iously aan tisn ad . I t say he seen th a t AH r

gold again had th e la rg e s t ro o ts fo r th e f i r s t th ree h a rv e sts , then

i t s r a te o f g resth decreased daring th e rem ainder o f th e m strnii The

s ix o th er v a r ie tie s f a l l in to two groupej th e f i r s t includes H uyland

Golden, Jersey Orange, and B-5999* and th e second group includes ffcrte

K lee, Ir-241, and A ustralian C am er. In th e f i r s t p e e p th e average

weight per ro o t in creases s te a d ily through th e season, w hile in th e

seeond group th e weight p er ro o t increased rap id ly daring th e middle

o f th e season then were slow ly towards th© wad o f th e season. The d if ­

ference between th ese ha# groups say be ween in Table 28 and Figure 6

which p resen t th e increase in th e average weight p er sto rage ro o t a t

each o f th e s ix h a rv e sts . In th e second grst^p, includ ing Porto l ic e ,

Ir-2£*1 and A ustralian Gaunter, th e gain in th e weight o f th e ro o t

Shar p ly a f te r th® f i f th h a rv e st, w hile th e gain in w eight in creases

atfeiftaiiiiy jn th e o th e r group. Tin th e f i r s t 'grsufy hev th e I s

w hile Jersey Orange has th e

OoMen and Jersey Orange was found to exist only during the last two

harvests, reflecting a more rapid rate of increase in Maryland Golden

than Jersey Orange at the end of the season. Hie varieties of the

second group show close sim ilarity to each other in their growth be-

Table 27* Average height per Storage Boot in Qtmm ©T SevenVarieties Planted ©n Mqr 25 arid Harvested at SixSuccessive Dates Starting Six leeks after Planting*

JLi r m Planting to Harvest

12j*ggr

Port© Eico

In241

1 .5 ♦ 0*6 7*2 t 5*6 12.1 + 5 .6 33-4 * 4*6 5 M ♦ 3 .7 110.1 ♦ s * i

1 .2 t 0 .3 6* 0 ♦ 1*2 33*0 t 3-3 33*6 t 2*8 53-9 x 34*3 66*9 t 4*1

1 .8 * 0 .1 5*6 t 2*3 17*6 t 4*2 40*6 t 7.2 94*9 i 23*6 123*1 * 31*6

4 .2 t 1-9 9.9 t 2*5 21 .6 t 3 .1 36 .1 ± 9.2 60*2 ± 16*2 91*1 £ 33*1

1.8 + 0 .1 8*7 t 3*5 36.6 * 3.9 73.1 * 23*6 82*5 ♦ 22*2 177.6 £ 57*6

1*3 ± 0 . B 3*9 t 3-3 34. a ♦ 2*f 28.9 £ 8.8 70*5 t 19*4 62*2 t H *4

1.5 t 0.6 5.6 ± 0.9 12.4 ± 3-7 30.6 t 1.4 81.7 i 36 .5 101*1 £32*5

GMS.P E R

R O O T

P O R T O R /C O

A U ST . C A N N E R

L - 2 4 /

MARYLAND GOLDEN JERSEY ORANGE ALLGOLD B -5 9 9 9

WEEKS FROM PLANTING

n&am 5« m i& t p tt ax* •£ «•*** m n ( >»utoWHixUbM pU nM x l l r K a l hirawM * «fc «lx «k w -a lm tfalM rtu U a g , mix wwto xfUr pUntine.

55

fab le 20. X m vm m in th e neirffct p e r Sfcerage l e s t (Graau$ ©f laeh e f S em i V arie tie s HUnted ihqt 25 i n i M anreetet a t S ix Saeceeaiife Detea S ta rtin g # |n Heeloi a l te r la s tin g *

M q r} * * (UUton 1.5 5.7 4 .f 20.3 20.0 saufJeraey Orange 1.2 4.0 7.0 20.0 20 .2 35.0Borto Idee 2 .0 3.0 12*2 22.0 14.3 20.2

AXlgold 4 .2 5.7 21.7 10.5 22.2 3§.t» . . . eaafi^wwfw 1.0 0 .f ?*f 50.1 t.4 55*3%rWL 1.3 2.0 B il 24.1 41.0 11.7A uetralian Canseer 1.5 4.1 0.0 20.2 51*1 25.4

56

S M S

908070

60

50

40

30

2 0

PORTO RICO AUSTRALIAN CANNER

L-241

9080

70

6050

MARYLAND GOLDEN JERSEY ORANGE ALLGOLD B - 5 9 9 9

40

30

20

17148 126 10W E E K S FROM PLANTING

jr w "

Figure 6 . Increase in th© w eight per sto rag e r e s t t weweekpSTStlnMI «* SStwR IH«OV pOwSSwS Twr3>S»XeS pjU wwQl w n p * / amui hftPflttM it MCG8fifiVi <lji&i8ii StiflPtillE *** mtauAma f te r planting*

roots* L-241 th e sm allest.hav to r, w ith Port© Ble©

and A ustra lian Comer in ten asd ia ie*

Htth regard to th e •sMfl&er o f sto rage root# p er p la n t (fab le 2 9 ),

I t to in te re s tin g to net* th a t th e re to 0 negative c o rre la tio n o f

- $ » $ 3 # between th e s is e o f th e roo t# and th e number o f root#* ?art~

y

number o f ro o ts per p lan t (fab le 2$ ), and v ise verse* On b asis o f sum-

if ro o ts p e r p la n t, th e d iffe re n t v a r ie tie s a re In th e follow ing

# • « p * t

fo r a t­

tainm ent o f th e f in a l masher o f areata d iffe re d w ith th e v a rie ty ,

tabs h e n

and only 2 are

e a rlin e ss in ro o t femar*

and T r i l l a re sow**

o f f in a l number oi

roots*

Table 2% Average Rtraber of Storage Boots pear Flant of SevenVarieties Honied m Magr 25 and Harvested at SixSuecessive Dates Starting iix M m after Planting*

Berlod free* to H arvest .Variety____________, I jggfeL_^. . ..... ICWHHL-.,■!-,'!■ ■ te -W m * ■ ■ 12<wqk» ■ :. t t MM*ML. . . . ...13.. m tk * .

5 ,1 t 1 .1 5 .8 ♦ 0 .7 6.5 ♦ 1 .6 5 .7 t 0 .8Maryland Golden 2.9 * 0.9 3*5 t 1*6

Jersey Orange 4*5 t 0 .8 5.4 ♦ 0.6

Berio lie© 1.7 t 0.4 3*5 * 0.7

A llgold 3*9 i 0.9 5.6 ♦ 0.5

B-5999 1*7 ± 0*4 2.7 t 0*5

1-241 2.2 1.4 3 .8 t 1.3

A u s tra lia Cannef 1.1 ♦ 0.5 2.4 ♦ 0.4

7.0 ♦ 0.6 7*2 ♦ 0*3 9 .1 1 2 .1 7*7 t 1 .0

4*2 t 1*1 4.5 ± 1*7 3 .7 t 0*7 4 .4 t 3U3

5*4 ♦ 0.7 7.5 ± 1*3 6 .3 t I*0 6 .2 ♦ 1.51* 7 t °*3 2 .8 t 1*3 3 .7 * 0 .3 3*3 + 0*4

4*3 i 0*2 6*8 t 1*2 5 .8 t 0*0 6*9 1 1*0

4* 5 0 .8 5*2 + 0 .7 3 .7 * JU7 6.3 ♦ 2.1

1i l l

I

I 11 1 f1J?

60

Figure 7* Dissociation of cortex Figure 6* A shallow crack Inin a young storage root. cortex of a young

storage root*

Figure 9* A carack penetrating the csabial ring in a young storage root*

3 8! 3 I 3 I I i I 8. H i i i i i Ms *

I p , I L ;|! 11 i i i I n 1 i11 j ! * * 11111!i i ! i -*

Jr t f i g | I .

t 1 11

i <! { i* j "! i !! 11«

dr I I I * I * I 8 1 tr

c j i !

Both

hura

i.ditj

'

m s v

formation esf Irrrftlifliir tissu es*

Figaro 12* Sx^M ion of a healed Figure 13* A car^letely healedcrook* storage root skewing

a discontinuous caznblal ring*

ehw bw r. « m fr^ fw n tljr cfa*ek«<l w ith an A irg n lto , J r . 1 laa taU ad

14* Uni leng th o f th e jaicroenvironim vt treatR m it m m f iv e day*, A fter

Hhloh th e e lie e a were easasdjied, and were taken fo r h is to lo g i­

c a l s tu d ie s , and tre a te d a* above*

e x te rn a l appear®see o f fo o t section * sto re d fo r 5 day* in

chaabere in d ic a te th a t tis s u e a c tiv ity la a ffe c te d

by t« ap e ra tu re , jso ie tu re , and v a rie ty o f eweet p o ta to (fig u re 1 5 ).

T iaeae .a c tiv ity wae »t©a*t*red by th e develepaesit o f wound tis s u e pro* 'j

l i f © ration a t th e iwirfaee o f th e ro o t se c tio n s . At a tem perature o f 1

ooa ©t>serve& reg ard less o f th e ssoiebore lave!***»

P ., isere

that the

observed th a t th e p ro life ra tio n s

had a lay e r o f wound tim pie o f Jr-S

had a la y e r o f JMt

2-4 e e l! thicknee* a n observed in

no m ew l t i ffee* was found in

th e re la tiv e in a c tiv ity o f th e

tie**# o f Ion busEldliy*

llia m fa c tu re d S jjr£ S fS ^ S e tia S S S

o f th e a lle e o

e re la rg e r

* I t

a re a p ro te s t o f th e

co n d itio n s,

» a o o te l tis s u e

Orange (Figure 21}

10), fsai<8«» o u te r

i th e

of

/ C5

POTATOSECTION

y u u w w w ^ w w w wW W W X W W W W W W W

Figure 14* App&ntina uaed in tis s u e a c tiv ity experiments.

Maryland Golden Jersey Orange

S5° F* x Hoist

85° F* x Dry

50° P. x f oist

50° P. x Dry

rM wrm

)<V

figure 15* External appearance of .Maxylscd Golden and Jersey Orange tissues showing various degrees of proliferation when subjected to different levels of temperature and humidity*

0

FOE $$ TQ 0L

£R& aL 'flSfetittikrS JB 4 Mfc iBtafc S 4k 4 Ki M a.afc B 0tk4k 4&4S44 44 AtafeidE¥&i$mmW- mmm! kmWIPmWm0m^mk **» JRav JyMMI ttWelwpB wMHRMmP Oh# ®3f * # «SBO

arrow) in ISmyXmi a t 85® F# a®f b jjife re la tiv e h a a lilty *

Figure £8* i t a e t o f wound tieau ea in te^X oad Golden a t i f 9 t*

m A low re la tiv e hum idity, Figaro If# P ro life ra tio n In Smtm^r

Orange tiaeu e# a t 85° F* end h i # re la tiv e hum idity. Figaro SO#

&fifti*r»3 %Xoeae fons& ti^i (above arrow) In tlereey Ormge a t if® f #

h i # re la tiv e feasiiiity* Figure SX# tfetxnd t i m e fonaatien (above

arrow) in Jeraegr Orange a t 85° F# m i lo ir re la tiv e famaiiiiy*

m

C« V O rlatal M fferosee* in S iitteture*

Storage root* o f Maryland Golden and Jeroay Orange v a r ie tie s

nor® e o llae ted a t d iffe re n t stag®* o f development ranging trm 3

to 5 In <H*a®toap oppr o v l Mlc^ooeople aumrt'Tiatlfli*

4 »m§ %f|fl|t thOOO tHO V arieties diff88T In tlWl OfWM111 0*$i StOTt®*”

tor® o f ih o ir sto rage ro o t* . From vxmina&lm o f cross section*

My^jkO j|. OtMfc - ♦loJlid* %1'Sikaa YsOMMMtSMfcl* jflNttOfcOe mJtk.05 JQWtg I jLOKy *wQw j Jtv SSS ilWffii WMIw Wi«P Wwlg® V»Tl«*y

hap fQ&ge «y1ftnp VOOOOlO t hSft l%gy*|prtl fSftlA*** fppyjl tfoo t t%0 TffS-

.pMa| f i u J e r s e y 0rS ng® ' OPO tpaal 1 <sty |t> *i*© # &0 . pife np in> Wi fmy**

As th e ro o t t**® o f th e vaoealar eylix^lor

th e jn^ywypMi. An' o f psodayolJa fairenidsy&ia' tb si -

f ^ |a awwi8i4» m^| oortsoE iriitiiST**!* ( ||) » F&li&rs o f a o rta s to- frvep

- pans pith th e ®f th e voosalSr cy lin d er re s u lts In ®po<hSns

o f tlio co rtex $ « l li f a s i l lu s tr a te d in Figure 23* His g rea te r isao-

i ber o f o rfft-t in th e oortoot o f lisoylaisi as

irith Jersey Change, in d ic a te s e ith e r a slow er rat® o f elongation

erwi O iviaion o f t h e , co rtex colly** o r a fo o te r rat® o f

iiwu th o f th e a x is , re s a ltin £ in oroa&er M m b iI sreooare on H a

co rtex in MaiyXsnd fWidatn.

In mature onset po tato flesh y ro o ts ( I t)* tlio epiderm is, th e

cortex* tlio vyK ^ e r ^ * oro no l ^ ger present* A p e ric y c lic poridsrsa

i s by as ac tiv e phellogen throughout th e growth period o f

th e ro o t *»*d t he p ro tec t iv® *o!dLn*w Hie a re a yfrkfa y* th e p e ri—

den* l a *• iMpjpnip([|(| fttf largo p e r ic o l ic jou?enc$yma&eas ft* ^ f and phlM***!"1" v: c,‘

olsaasnts* la a comparloozi o f mature flesh y roo t* o f th e lo ir v a rie tie s*

Jersey Orange he# a ssfs uniforBi p e ric y c lic jMurenchyma than Maryland

Golden (Figaro 24)* Iho p e ric y c lic p o ren ^y sa in Maryland Golden i s

pasiam f i m m 2 2 1 0 24

m m m m m m i w a g

«gaji ifiXtjiiQf fljPWlifty. v(Mnyr j«Rjwmun» «&«&* *■»- ) a£

ftgn # Hb ‘ fr itii aeetlm i la matur* s&®r*§t r*a&« ©f

Figure 23

Hgmm A

tjmmm foft FIC EES t$ 10 27

jpjypgg*gi ©iwfedU L Jji isMwup® sfc^ES^B ytKyfe-n &£ lltejflABsi QoXd^^

f| fyt||y rtfl» Of S |ySS®S F-NH1*4 # 1 cJNkwWT Q9N6Q6 VBl*ls i 88e

■wmf&tifmW' iffP wPwPPlWHr WHTOlW® ffi iWW JSJUBBi WrwPmMpJNf

nof $0 jjitflTa

VS®® SSBtplaS -KOtO t fltTf1 fjf dfftwn*wn t ffn ®f tt>| HOtST 1ftfFb#fr* yfteh

•ach Maple being $npoMl o f S 1$ os# section fro® the central portion of f 1t» rlnet chosen *& random* floss mm sslXsotod £vm its field alsMys ob ssa$st« *1.11 lifOfos omt jMAi«»tAy who ^ IfT d off oMt tiio

u#fc4M#db J t Mm &Sfc.^K M lilM .A J i %im» SbSi#.Mfc i i m m rifc jlT Kb MillkXO^nMfeAM & m JlOlrSlOB# 0 * 1 0 9 t i r M H aro OOvlurOil Ogr m i m OX S fw W fp r n lw r

bllKlS# fbO f ifo j>0rti®EIS SOSO tNtt® ff ffa^d fqp4 f f yfe.1! #>A*I 1y

s boatst* sd tli fhad® b asa l ifnit Is s s i’ssd 3® ssbor# iti** beabors so re lo f t

Ob f ftfiwi tssy srsb a rs fo r Ob hffir t i A fter tb sd p arted tb sy so re raworsd

fro® sa te r* b lo tte d gen tly s lth . tf iowio pspsoj #**4 y fi^ ie d ngftfiH fly sober np^bi* pereesba^e s s s *»*»i aitJMi ^ ^ sadidsb basis*

A. Kff*e» »£ YArUAy.

O n « t| Pwrto Elco, ftln U , B-5W. W i «A J u tn l te Casnar, A -

fn m th e f in a l harvest* save in regard to th e ir N teT

obtain* (TafcU 30) inAieaio that AUfA&A, B-59W, and Ir-att w io tloasere hiishsst 1® ®eisb®re content * dorsey Oreose sad jbsvto Ute© saape intermediate^ 'Sod ^arylsod Ooldow sod Asstrsllsn Conner sere lowest#I t oso found that lisiylsiid CSeldon sad Jersey Orange aoddOfedSod s sash

in£ s high## sfflnity to seder they ddssay Oisa®o# farts IHifff Sod sere ishassadlebe SM* TrOtl ifffii JsoddddyUsi Oesasr sets "TftCOispsriso® of the sator op tsbs o f the shors§PS roots of ttosso assdotias yieia tssl^r a ioaff aasdsidss io soistaaapo osa**

toot 4* 0 ad r if t bHt ospisSiss 1® sffiTytty of tbs tSsaaios to sstor* It say to eoxHslsdsd tlist tlm totsX saisto^o do tho otoi*sge

n

30 t MEfrl. X olsU r* IM tr " ffyrt i t ft* o f tb« IB w ^ e

V arietyf e ta l $$eletttx*e

*TYi i I t •giYiat

r “

i t f t y t e i Golden ■nuao &U24

Jereejr Orange 73.93 21.34

Itort* Bie© 73.14 14*17

Ali£«iii 75.47 23.71

B -fW 75.W 1 4 .il.

M y t 75.34 11.37

i&ta&relXttn fflfcprwii* 71.44 22*34

HMD 73.94 15.33

r i u w 5W.00** 4 3 .4 # *

1*3.5. • DC 0.31 2.27

^S ignificant t$ odtes «f ffiX

74

rente is net a n U ik l* test Her predicting the ab ility of the roet

tilffijttnfl if#- bbowb urtiiWa

w#tff> 0 Itkffi yif!## #f SSYSft WfIs L## WO#

bi4h«< tlfO *ii»# fljPOb SK plSllS MM# 10 WHHtf# #ft#X*ayal mm sfaay pag £ f|yy jpiyyfr. 1 ytyyjy* #|BBp3JjQ|| WO# 14 HOOkS Oft#!*

.0qpyj|| mm #jty|sg o wot puslflHS* Oboioooly th# i l f ^ i - of mi»»

SijPOfSflMBSt WO# y^th t>he &g© #f Jj&l&tS OHF—

lug t$m #fy ptiHhHt mm y#98 pBp Umb 4#yi-f?g Hi# wot jKWlodU Umi s#**OS*# JffWSfWtts f j j i J ^ ; atra ifoo WB&SIf

0jp tbs win## was #ffb#b#<il ly tbs bsosft kbr tbs i yypiff

o f tbo two p erio d s, <l#rs#y Orange and B-5999 ofclb& toi Hi# h ig h est

afeMSoAt^MWL Sfc$ tt£ fe MbtiSOMflMllfc. ! & & 4 k 4 S 1 1 1 M l k V ' j S #fc»%^g[ j f tn # JMMl'TlMI# 1 j | # m « M t t M U k 4 « « 4 A « i ^ .V H w SqpwHEPy t w w J&M#9f IttHl mHrV 3UuMKP

ssodiot#, JiH?yl#Kid fioliAm ssd Ir-tbyi wars Toitoiiti i mtiri.st3.6s

SMjcspt JWttyloiid C?o3don and tfsyioy 08*8 # # liIjJiiMf iwttsp wp&alis

tbo jyy jpssisd daring th# w#t popdod* Wtspy%MBtI and

lytrsny Owttig# sot #fyyy any fTmfWTWf totwosn tbs two fsff sflsr

i* Effect of If# #f Plant* on tli# ifct«r tfptak# of th# Vines*

WSryiaDd #HI ffrsfy OrsBijW warioii## mow plfffftsd i t Imp

suecssaiw# datost Mir U» Mgr 2f # «bm« 2 , and «h*#o 22* Sb# wins# of

wasdoti## war# aofwyljfHj fWr dotoiwiiMMkl#© of water ihxmigh**

out Hi# d#woloj#M®t of tbs JUftor fxmi j0 ja3ting#

fftfinrllT* stttptoft Qjfyi #t twcMPSok ist#siss2s ■ wiSSJl th# #r4 of

til# so##### h# ###|0b#t# #3P# Steen in Table 32. Chi the

hnta hfni >s§e £mp *11 o t pSaattiig# t t ni be obaereed fbf*-

■ ly| imtb ssytotiiS# Hi# woto p oj sfe# of HHi tdboisi itiosos#MNS> ## tb# ] L#st#

glow hm <t#rr#i«f In mjti#r i t#lK» of tb# sio## of HwrlsHd

Table $U Hitter Uptake by tlsa Vine* e£ Seven Sweat Potato Varieties Sampled fan and Sixteen Weeks After Planting*

V ariety

15*0 14*2 11*4

Jersey Orange 24.0 22.4 21*5

Porto Btea 22*0 15.1 14*5

i i ig f t i i 23 .0 U .8 I f *4

n~<saee 24.4 14*5 20*5

t 4 | l 15*5 10*9 13*2

A ustialiftn CUbsust 20.0 13*5 14.7

Km 20,4 15*2 1?<Y

O d K h a a , , i s t .

V ariety 2 .1

Period 1 .0

V ariety x Period 9.3* 2 .9

0% <«© 0*♦ » * •& & £ 3Wm

o f t 4@ fP|*■*&

•0% 4 4

4 l 4 i 41 ♦1

*«9 ' *%

©*• «**

1o0%mm

h i4 '

HI4

4t 4* •-4* 41•n \

t i

oMM

o£ 0%. --#4

€44

0%♦***O4

IP**MMB H"!?.

4t 41 44 4#4> e- m &»

0% m m *#4 3 4 .44 44 4* 4 t

e***

o*£*»H s

c©*

«o 4A*

CO* #■4 4%*

H

*1#m4H

*4%

44' 4 1

«*•n

H4

mj*o

e*4

♦ i 41 44 44

46*»

£

a •£7

- fm

0%4 • f0%

m4

44 41 44 44fk»

sEmAm A0%

m t** <**

41

m m

#»l 4*1 41 4i 4i 4444% ■ -C54 <g| f»* H <#

*# 4% «fc♦o 4 :w?#4 4# 41

«*l C*** • 5

fisHI S

.* <S63 ^3f F

*# r | IP- *% IffcJ it 4 4 444 41 ♦i 41

f** * -

#o

77

*f*t ©©©amut w y rap id ly ©M-IN* t he deerea©© ©a© @PWinS. In

a « B io t t . 1 4 A l t ©4&&e© & £ S m mM mm m m k l l a v in o © O f J© re © P © ran g © ©g**4©l© ©MOOOrafOnP ©w*e© 0©flpHP© 0 0 T©Pe©lF aWOieOjjB! ©®”©**^W pw f W a en n e© iewe

h ife ity f © rooter i&ffila i ty i e e a to r fe r* M aryland

0 , E ffect ©I’ th e 31m o f th e ihera©ii loot©*

Utorag© eoehe. o f th e ^srtNi§ © erhetf aod o tnntB ©radoa ©f both

Mteylaadt aed foreey Oran©© © arie tiee ea re tiauf to detaroilne th e

d iffe ren ce in th e fltoistm1© e a te r ©gxbaic© o f th e d iffe re n t

i f etorftg© f©©SS* <®W 1©©M8SS ©hOKfiR in ©*¥1© t$%9, tN wt

in both ©mrietie©* th e ©torage root© o f th e J»rib© grade a re h igher in

jsoiettxro fi fotori.t then th e ©torogo root© o f eith e r th e aarihob o r th e

fepftyrtyi grade©* Hiere no© mo © if f©res&e© Ixi th e ao to ta ro co n to rt i f

th e l a t t e r to© grado©* Alooy no d iffe ren ce in M oietiire content ©a©

U tter aybalie ©mo flaaad t© 1m a ffec ted by both oarlody and grade#

©ho ditto joMecntiHl In jsjl 1* 4 th ^t In bo th tiMrfiOtf.1©© the

feiaaftOTwg grad© eahibfteii the highest affinity to eaterf followed by

grad© 4im ©terage root© o f Mitejyland CtoiLden ©bowed © higher w ater oy-

**<■■» f i m « t t k * »frjn iM ifM » w w aO ifc o f JF aw w m v f t « i t o m i , I t m m r h n I n©©©bmimo ©w©©M©e ©p©i©©w ©©aearw *b ©ipmi* . ©eeoiMMM y ©e©p Meajji e w #mo© ap©a

c^ht© 3JI th a t © lith^gh th e re 1© bo ©©©dotal d iffe ren ce in to ta l aol©~

ta ro y thoaso i© a la rg e d iffe ren ce In eat e r itytetflffw flMthaiBaara y ©to r—

©im root© o f 4>m at©*Mp jr^ ^c t^st effh^4>jt a h i^ber ©e^ter o ytafe© th e

M©ple^ ^paHte © hil* no a ifffa fm co ©h# obeem w l hfftnMiio t he a e ie ta re

oootent o f th e te a groa©©* l^ooe r©M ilta iw H rat# th a ty a^aiu» th e

ao io te re ee^totot o f th e etora^e root© doe© no t eeptAifa th e ir ©ff i r i ty

~to eater#

?a

T able . M tm t e£ tb e S i*e o f Mate* on tfc* T otal M oisture and W aterin Mftamrlttrid 'tendI .?*»•*» CfootewcMo f lu ^ i aterikJtffcjMMo,.osie e *'Weej» 8p9 je$MSj m *we Beee Be bp i*

Grade

f f i£ » j '~ : _•_ J fc fe ir M i b % ,',m iGolxtea

oSiatoWiaikawpy2ffflrORB*.. Mm® ..........._ .

CVatitomfoHMf..Onau^L

75.18 76.29 75,73 86.0 19.9 23*0

sm&mm 78.64 73.88 . 72.53 21.6 18,3 l f * f

f*jfpm4ng 73.00 73.35 73.17 ; 35.5 23.7 26,6

Mean 73.60 74.88 25.7 20.6

V ariety

Grade

7*33

II*!®1

I*®*

1*29

111.17**

*31gnifieant aft cxUU of 19sl**8Lgnifleant * t odd* of 99ll

ro o t r a tio of th e eifeet p o tit# p lan t open tlio m oisture re la tio n s of

tfeo atneogo root#* $borage root© of belli the market cjmgvi**g

*«re oaed for determ inations o f to ta l isolator® and e a te r uptake*

m o d a ta presented in Table 34 shoes th a t th e to ta l, m oisture per­

centage In th e atorog© roo ta a n increased h r la to pramtag* n h ile

th e re vms m d iffe ren ce b e tm a e a rly pruned p la n ts and th e cheek* Bo

d iffe ren ce was f e u d between tin

o f th e

inla te .h i qi'imO>. a MMeaeooIhUmiw- Wow

This was tre e w ith

t i e lack o f

again famed in th ia

th e canning pad©

th e market grade*

th e

th e la te

canning

»ete o f th e eerier

end th e cheek*

In te ra c tio n . I t was

o f

th ese o f

B* i f f e c t o f m u

P lan ts o f l& ylam d Golden were eet la th e f ie ld a t spacing© o f

10, 13, and 10 inches ae prev iously described in se e tien 1* At h e r-

00

fg h li UfXect q£ ? ia* Pruning «n tta i ljp$Bmi •* «■• $MWBP& m Golden Sweet Itotato*

Content and Water ixonr* ex

«= ■9 i

15 m * ti

* 15 77*4375*44

77*79

I t* f

10.9

24.5

►922*7 29.9

J 2 74*14

* 11 i I. <} JI nI H i j . ,

i

! ii11!

M

I

I

III

Mtm% WUtX B&mimg m 'Wm * in 1MM md Ginning Grade® ©: U sT lm d Golden 3*e«t

Table |4* M im % e f H ill Spacing m ill® Uptake &t ill® Marketand Canning Grades « f Cracked and Uneracked Maryland Golden guest Potatoes*

f tp 22*43 24*W 23*42 25*01 25*44 25*33 24*37

Tftbla 37# lifjfoct o f To&$»ri&ur« Baring Tooting on tfao ita to r !fj& ta o f 4b* Storage Boot# o f Ka*yla»4 Gold«n Sw*ot Fototo*

JP*

4 ®

5®

70

#3

100

igO&oj*

M » n

f fb lo#

W ATERUPTA K E

%

28

26

24

22

20

30 40 50 60 70

T E M P E RA T UR E ( ° F)

H a n « , m tm «t T f i i ih w m. m wfUto t lm wmt I b tI —* in llw i

4 trt* A# gm ai B&feafcaeO ia A WQBiltfinil’T wiw4*M«. jpem! khm w uottI O BP BgPIOmpea®# # 410 BO OFae ^ g BFB gBpag4llF 4B*OT S ^ PkWPPP

o f 1949 r fy reoynt i ft eeriene ^ff^lftog mFeiffff1 fo r Ih s Sftgftarn Shore o f

Mjfcmrl AmA . iA41>i 10§© wmmmmiii A ftaw*iti»i lri«g lilMilll ■ 1fe» w im lta

obtained faroa «I«41m conducted to 1949, in d ic a te th a t to e v a r ie ta l

^ f fay n aft jp jniy^pM hf H t y %Q Cracking 1Aft ttf t OOOt ©OlieiOieilb Of

Mgr fa c to r a m i n i i Of Ilia two v a rie tic e to o ted in l$49f Maryland

Holdaii mm feond bo Ini mieti Mo re otimmptlhlft to ©racking th as mm

Jeroosr OawBuai* ft v a r ie ta l d iffe ren ce in «m w«9iihi n t v tg cracking

*T*ff frf»ff1 rOfKNTbod to OthOf* CFOpO, Tt** 'lfdf<a£ Irio b potatoee

(47), toaafcooa ($ )§ ipplfto (4@)» «od ©fcetrtoe (ft?)# Urn tim e o f

p lan tin g imm afto© found to bo an im portant fa c to r involved in crack­

ing in 1949* toon Maryland Golden mm p lan ted a t f iv e aoccoaaire

a t tmMoeek totorvafte« mm higlioeb to too f l r a t and

fo u rth planting** Jeraey Orange d id not show tb to a f fe c t, however,

Pi«d erftefttog no# © ligh tly h igbar to too f i r a t p lan tin g , ^ e i to any

o f to e o th er f oot* ptooftjMffieir- ffitto reajNiirti to to e a ffe c t o f biftft

spacing, a tren d toward toereaoed ©looking w ito too .«oTeani to too

di otance between th e plant© mm olNeftFVedf afttyhotigft th e d a te did not

ex h ib it a ta i ie t ic a l significance* Propagation o f eweeb potatoo* by

Vto© co ttto g a reao lted to ft h igtwwr peim^ta©© o f oraobtosg to on prop©*

tsar m m m m A m -i #WP aejp P lrP*Wirp»

too Mmgrland ®oMm a a rie ty nay bo obarftcteriood by i to ftargo

ateroee eooto . t A # y « iTeroeT OrftB^o a laygai* m n b o o f00 eeooa ^ aigome jp eoao eift i oojg pnpp apao a ooooe aeo ooooppo^oia

m

sm aller root#* W ithin each m is ty * d slisr la plawhlag m m to to the

s tro n g est fa s te r depressing to th y ie ld m l s is e o f sto rage ro o t* . This

o ffs e t o f tin e o f p lan tin g was stro n ger In Maryland Golden than In

Jersey Orange* Tine pnaiiag a lso decreases th e a lee o f sto rage roots*

and la te pruning la a m s ffe e tiv e in th is resp ec t than ea rly pruning*

M U spacing m i n liad lcate th a t tan e lse ox ta s stowage root# nee

rodeoed w ith a decrease In th e d istan ce between th e p lan ts* M s e f­

fect* however* I s n s rs eb fle a s whams wide range o f spaelngs m i tested*

th e two methods o f jro p ag a tien , sp rou ts and vino se ttin g s d id so t show

Say d iffe ren ce in regard to th e ir o ff so t on th e a lso o f th e sto rage

roots* I s studying th e e ffe c t o f eey tiif* fa c to rs os th e a im o f th*

sto rage roots* c a lcu la tio n o f th e average w eight per ro o t seems to he

mere swtlM^lv fo r t he w ith swat ie a t owilM atlan o f th e d o ts dnfo th e woe

o f a grading system elans* although th e grading system i s n e s t su itab le

f a r a p resen ta tlo n o f th e d a te f a r p ra c tic a l appilcadloci*

In contsH l a t ing th e e rselcliig psvtddsi w ith th e previous IsftsM a*

tio n as a background, i t way seen th a t th e aaseaf& lh illty o f hw ylnad

Golden to creelEiiig nay l ih i ly he due to th e production o f 1nrgo s to r ­

age roots# B asa lts o f h i l l spacing s tu d ie s , may a lso in d ic a te th a t

cracking tends to increase w ith th e increase la e lse o f sto rage roots*

Date o f p lan tin g s tu d ies ind leate* however* th a t th e e lse o f storage

r e s ts could not he th e only fa c to r Involved In cracking* Ihe f i r s t

and fo u rth p lan tin g s re su lte d in th e M #*set percentage o f cracking

In I f t f * although th e itswfc p lan tin g produced la rg e po tatoes w hile

the fou rth produced re la tiv e ly sw ell roots* JO rtherm fe , vine cu t­

tin g # re su lte d In more crad lin g than spreads* w hile th e sto rage ro o ts

pOOOMMMi Of *00 OWO IW N l W fl BOO OXXXlf'Ottt in i t i l i «BO OXXOOtO

on osmfci&g of data of planting and of mthod of propagation nagr again

load to tho hypothiooti th at thmo ia a oothtia pfcyalologlcal ago a t

ohtoh tho otooogo rooto ojpo ooot off ootod hp oaaddJIfoao oaaadng oroolB"*

lag*Stodioo in 1950 rooaodlaji tho ddmlotBiant of aim otorago rooho

ahm that w io ttao of omul peta&ooo diffor in that* growth hahaoior# In ooo gpvapf liwtlailpg Jhueyla&d CSoldon, Jooaajr Carongo, and B-5999» mo Tooo ox gam an mo migiii ox too otorago root inopoaooo myoma"* out tho ■nnonn, in o otrormf gratis including Ihrto Moo* fHltlj

ana aaowyyytma WHaMWf# aoo rooo ox garni an mo waodpa jaNr 0 0 0 1 0 0 0 xoooJ L k B M M B M a a l k B k j u i u l 4flksdt O m j B AhiiflBBBJtfLBifeiMk dOtlfcBfc I M I i M M B O « b 0 V a jM a k O j 0OTOPJNMI WORHPOO OwO ana OX 0B0 aNNH|00» #00 00X301If AJUL Oia, OfmlOOOPf

oao ontqpio and io alMMraotaodood hp a yoptd mho of growth dofffflig tho flro t part of tho m am i # HE jrrn^roift lily QVifff down tho oHI of tho ooaoao*

la gamml# tho Ijmhpoooo in plaid poo plant ia tho fimh halfof tho gpFOptnf oooaaa to dan to hath innmnno in iffO!!**!!* #nd might

»

$JT TUMI JNpCaMlp IPBSMml mil »B® flMwRHNI BlAl Saw 3Um pMBWMRSJyp flHP"*

i J k h k i M d MhMOMMAOftOifcA j*ung0 jtthbdft iMkdP1 dkhfcjfe OlMkJMhMB WNtfcBk. ita^M iilM lU l'JPHBlflMKPl «P0B !■* SIMPPVWMRR Sit 1RVn|p$ w VflME. PBiWWis .- *»• mlmm TmjJA UWm

far marMnii ^ to flaal moribor of atorago rio ti ooooo to to a mrlotolm m J I « i a a M « .^adbrOk^B ^ flU a ■O kflPtiifaflM k^u^a^k.aa^a a M k ' f lh a a < a a a a . mqniiNMftor<ioaa> mo aoa*3seiML: axxiofooiNMi ib mo wpo ox groom ana

Oovotapmot iadioato dtf foNnt: tooloomtiiro imlid UmlhioWji hot naoo remaroh mot ho dono in thio f iold hoforo onoh dtffmaaooo in growth

aoar ho yroowrljr oaplotiiod#that mwgrlaKid C Utaa prodocoo largor at^ogo toolo than Jorooy

Ormgo hao boon parovimtaly aontlonod* Id a oonparioon of tho grorth

omvm of tho too oariotioo, I t mo fowad that hhto w to ta l dlffoa^

3flff If 1i - U i i H i ,

81I II1i I

IaMI

i I

It3

I

i iI

11 i

* I

tumult potato*** v a ra h igh up» both

« ftff!4y|ijy odt llhl Mtfffiff

ttd itlo o (3)* HNS t$ ,iiiBO aotlv itgr wiO JBMJwrod by

tiootto S6@sw8kSsBj| $Ikb - mmsiHEdl HB®tt SjoS3 EbNw th iit isoofeo

oooo

flf tf tr iA ImMI Inmr

th o i Dm tloonoo o f tho

tfeo Mftifftt# of tbo io M il Sterol

fifftpppf^ifr |n l^teteMl AOttOttiJf Of

;*/« tetepo AO JppteO.

ApA fffltfiif IMSOI fO tetes

r oyroteiritirttt In f frf f j Afow o f liteAiMkl

MOcOfcte wflMiM k O ft'O'teRtePI •piMfeWW fPPmllllt Wm*

A m m w m m cowihiAl pix&j

to lovitt (13

OAMAAMMAp amA a

otAo$* AMI* boo

tAffRHAA 40PO lo t#

n ii* iiit

1 1

4 1

! |i ! i 11 a g, , . 11 j i 1111 i .1 1 ! M ! H * 1» i I ! * * } | |i

96

A ctiv ity , in ad d itio n to i t* reg u la tin g e ffe c t on a o ia ta re content o f

*&im €4 ifiwi##* la x a tiv e re su lt* obtained bv Lute a t &1. £20)

borax n&gkt b a te been ea^peetad - since th e m . s e l ls m oo ad*<|es&oly siop*

jpH jw< .n itb bOF ^ t Ogle (24} -009 to dOCimOpe CrV^Vl^jf by Vfftftg

. a^j^-^^i^hailjofiooooti.o **14■ 00 a f o l ia r aprey* T*** s a m ite o f Kroner

4H»m| c^aprlor (Id ) m o ld scwtii to *^p^y he w * Thver m bbere m ggeet

t|yf% thy e ffe c t o f o gyeabti rogmlotoi* io to tw riapo I t i e la s t ic i ty

o f th e c a l l I t i a , tlMWpaforOf believed th a t increased. itt i t -

t i e i ty f itlfnifo t he p ressu re vv^fdad on thy e n te r t ip

0000 o f th e sto rage 3poot§' th^e redm lng t he i m idtweo o f cracdEliSig#

%f%s (30) odeled th a t Ih f fa c to rs t b i t 4«o^o* cracking

g^f^Kyyy^wg Mgqpfai a c tiv ity ooiTobopoto th^y visa# lo o t t m v a c tiv ity

Ajiiiii mfedammjgm mttrMtL fitfMtm dnft!t!l4mivtL Aia fty^fSiiAyif^ AM& ®frnnih V^fcdkV'dlft OPSOS ^VS^^#^SSOrSP . Sl^SOPp^^rVS' IP as^^PaSSMOdSjghP ^eSSOs

ing o f in ja red t te e m s daring th e coring period* (h ea te r la s se s o f

kSryijaid Vfrfif* o f ^Orpyy* dredge oro oneoontorod daring (dosage#

th e lo n er tis s u e a c tiv ity o f lOkryland &*%#*** la m & ao a fa c to r fo r

a lo m r ra te o f taMtllisa and iMfifvr e r <yallty* I t ia believed

t lio t t he M-pup t a c tiv ity t e s t described ia t**i# stud l m y bo a ^ir tfv i,.

fjw i fo r th e m oot sedate bm oder* i a th e 4nQ«i»g o f Hemmed*%& o& elitv

o f m o am a t jMdafrV v a rio tio a , apd fo r dv t v p v l t h # ro^patiro*'

a m ta o f th e d iffe re n t typoa*— O—O . -— — L.dO ^uMkdJb MkL pdb-AMa>.. u k*M «H*eitoBa» aVjAL J*k .MKujUHd aMkiLiPll MbiteJbiikV m ak Utotti jftifMPflMA ^^0*CaXSw68E3UB§ wJT jpWflSilBEwmm O® ® ®®»3bSFB9p JHP®®jy(Bll mRflSBl flfeP6®a@0Ew

p m iom occur daring th e e a rly atago* o f developawat o f th e atorage

rootOji #f»d |(i f«» <**wqpf ga tIw l y lo v t ^^i^^^Btiiirep p>qy>qw||qaniffiiil by bi £

m la ln ro f r w i i l a t tdai aHI o f th e anmtnni tioder w ob ooaditiono

a delay ia harvoot m o ld bo inadvisable* Hie re a u lta obtained by Ogle

9?

(24) £roia the us® of growth regulators seem to he promising* Since

the varietal difference in susceptibilitj to cracking mas more con­

sistent than any other factor, hewtw# the ideal solution of the

problem remains in the hands of the plant breeder*

% R g r

1706

56

m

vinos o t Jtr& w Qracga a a jff ia ity to w ater titan Hary-

l a v i ^ l TT- I m oHassMaas&L^^Jl 1 'feJfek^aaaa^SMiaok a It* ne on altos W ta ^ m assina^fc.MJmm wwJUmmm* <§'v w TO IJUGl V w fm w o ^ C o f w m W w a w r P # W W > w « |w r IPFW im PK r'" w *

d itio n a ©aaaing a la v tra a a p iia iio a r a ta , Sk* tis su e s o f iiiuyXand

Golden sto rage ro o ts would rm & x iu rg id itir f a s te r tfcsn Jersey #*u&aa*

C r A c k in ^ O f SW A ttt m tvkm iuntug. mactr fa* d e s c r i b e d OS immiAmmm ■ . feH o 'ape* o^sesoosowsjRk erop spoeupatr or jp^pp^ropsps aii op p^ae ssHoos,ue^ .•■►puippp e pjp ppypr p pM p # w pit

ac tiv e ou tor tis su e s of the sto rage ro o t due to in te rn a l p ressu re 1

exerted togr th e cp&tral. In a c tiv ity o r t b s ' c a te r tis su o s

Ik »Vr k* jiostu-

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i«|.f & re s u lt o f th f in ao b lv tiv o f th e ir o u ter tSsaoyss# <|fcs r <»*** a lly in

a T arlv ty in ttw t t itipwfa a re osa|dMMdkr iiisskAfo mider drsr snbb?*

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a t a c e rta in phy sio lo g ical ago, and i t i s suggested th a t , l a 1949,

llaryland $.£ th e f ty sk fo u rth v ara sub jected

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utmmm Qvm

1* A rtsciw ager, 1* On th e aaabesy o f th e a sse t po tato ro o t, s i th note# m th e in te rn a l breakdown. four* Agr. lea* 271 15?-i m * x m *

2* IPwHt jsnirtdsm foottstXoB in th e potato aa a f­fec ted by te sp e ra te re and hum idity. ^ear* Agr# Ees. 35* 99*>1000. 1987.

3* and ib a r r e t t , E# 0 . S uberisation and sound p e r t-dam fo raa tie n in m o at po tato and g lad io lu s aa a ffe c te d by taapara&isre and re la tiv e hum idity. Jou r. Agr* Ees* 43s 353- 344# 1931*

4* -llll-lllll--llll41talllll- ^ Taber* aod ifffwHlf cork " ' ' " t o a ffec ted by teap era tu re and

re la tiv e hum idity. Jour* Agr* See# 47« 467-674# 1733*

5# Cochran, V* Cl* and Gex, 0* M* Bgporleental Designs, le v Torki John Wiley and Sons, Inc. SJpit '

6* £ l-K «ttan, A* A* The y ie ld a d a iae o f a sse t po tatoea aa infX e- m eed by aetisod o f propagatim » d a te o f p lan tin g , h i l l spac­in g , and rev spacing. IS* 3* th esis* Univ. o f Maryland* 1750.

7 . F ra s ie r, V. A* A study o f seas fo s te rs asso c ia ted w ith th e occur- rence o f cracks in th e tomato f r u i t . Proc. Aaer* See* Bert* Sal* 32s 5X7-530* 1934*

S* . .. r and Bowers, J . U A f in a l rep o rt m s tu d ies o ftan a te tm i t cracking in Maryland* free* Aasr* See* Bert*S o l. 47* 241-255. 1747*

7* G arcia, P* a sse t p o tato culture* l* M. Agr. lap* E ta. Bal* 70* 1707*

10. Oardner, ?• S ., B radford, F* 0*, and H o tter, H« D. The lU ndaaaatala o f i m t Productio n * le v Torfc* McGrav-Hill Co* IfS t*

H * B arte r, 1* U and Weiner, J . U A monographic study o f a sse t po tato *5* 888*888888 8883Sl 8888Ji58?88j5irf, **,* 5 . ^ 8818^o f Agr. Tech. Bui. 77*W ? .

12* ^ a n d t& itney, V* A* Influence o f s o i l tem perature and s o i l m oisture on th e in fec tio n o f is e e t potatoea by th e black ro t fungus* deer* Agr* See* 32s 1153-1140* 1726*

33# Hartman, H. and B u llis , 8* 1* In v estig a tio n s re la tin g to th e hand­lin g o f m ee t c h e rrie s v ltli sp e c ia l referenee to chem ical and phy sio log ical a c t iv i t ie s daring ripening* Ore* Agr. £hp* S ta . Bel* 247. m

immr

34# Hartwan, d* B. and Gaylord, F* C* XieM e f sweet po tatoes a s a f­fec ted fey d*&* o f h a rv ii i t IVoc. Anar* dee* Hast* del* 42*J1A~5M* IM 9»

3 J. fiaseelbring , 1* B re v ie r ©f sweet p o tatoes In th e ground* dear#Agr, Bee* l i t 9-17. JL?M*

3»* Hgsptoe# «* l* Hts ...|MaMaM .m...lWMaMM...HiBi<* see TevkiI f ffiB'# ' .............................

17* X artesa, %* I# and fcebel, 1* E* O bservations on th e cracking c b e rrie a . H ee4 l i t 7 # * m . 1955*

30# B rener, F* <1* end G errie r, B* B* S lie r re la tio n s e f p lan t c e l ls and tissu es* Ann. Her. H i* fb y s io l. 1* 265-2SA. 1950.

If* L e v itt, J . PTost, drought, sad beat resistan ce* Aim* lev* F it* Physio l. I i m * m * IfSOU

BO* M « f J# S*f B eanter, M* T*, and A l te r s , B* Cracking kesplngSfeallty Forte Bteo sweet po tatoes ee IsflfeftwywHl fey r e t s o ff e s t i l i s s r , fittrefgan n i l s , M as, ***4 borax* Free* Aesr* See*lie rt. S c i. 54: 407-432* 1549*

H * McCormick, 1* A* Kotos on th e anatoay o f t i e young tu b er o f Xjraasaa bata ta s . 2en* Bot* Gas, 6 li 388-390. IfH *

M ullins, 1* 3* Bweet p o tato cracking* Vegetable Growers Hews* ?©1* 5 , So* 0* Feb* 1 , X951* 91* Tlwek Up* S ta* , feorfolk, Fa#

^3# ^ a te m , 0* 1* i ts d le s o f boron d efic iency o f sweet p o ta to es . Pfcytopath. 3?i A35* 1947#

34* Ogle, W# l«t Fw?ssnsX

25* ..... .. and S c o tt, L. 3* H e o ffs e t o f fum igation, n itro g enle r e l , coil' s o i l sfioiatere ©cmdibiozis span er soktng o f sweet po­tatoes* Trans* Peninsula H ort. See* (Bel* Bel* 3 t . Bd. Agr*)4 i c i) i i w i * im *

9 4 P rie s tle y , #« 3* and VYbffenden, 4* H* Tbs bealing o f wounds in po­ta to tu b ers and th e ir propagation fey cu t se ts* Asm* Appl. Biol* l i t 96-115* 1m *

27* Pusqphiy, F* ?* an* H arris , I* Cracking o f Triumph p o ta to es. Anar* lo t* Jour* 26* 355-561. 1149*

28* aabw^ w . ^ 1 1^ O f l l g l B g l , 6rw *h * 4 ftm M w te.. » t t * -

m

29* Sakr, E. M, S ffec t o f cm y ie ld e f th e m ee t potato*t e r * See* Hart* ML. 4 i i 517-51S* 1943*

30* S co tt, X* I* l i t e r s associated w ith cracking ©f a n te potatoes* Trans* Peninsula S o rt. doe* (M U M U St* Bd. Agr*} 39 (5)> 37-40* 1949*

31* S ta rk , F* Q*, Matthews, If* A*, H -E a ttsn , A* A ., Ogle,^ 'Wkaga&aat- A. Am Wvmmtmmm re n e rt em ©Meet OOt tttO cradfi-'c*Si «*p a ©essoe ap*pia#*i*, wa<*a eosF •* * *a a ^*epsr a s . ^p#s jswie **^ww^r *F<e .e^psm

ing s k p e r te n t* . Beport Ml* Agr* See* 35* 215-220* 1950*

32* S in n o tt, I* V* The re la tio n a t g r a t e t e t e e In eacu rb it f r u i ts , t e r * t e r * Set* 32* 439445* 1941*

33* ie sd e e sr, 0* W* i t a t l s t l e a l Methods. t e a S ta te College te s a *Ath t i l t i m t lW H

34* S ta rk , F. 6* Factara gyaylA @f y»4ff ffyafl th * dvreiopiSIlta t ills in ner issssoarji l a pods a t t i t# #***§1 bean. M* S* T hesis. Bair* a t t e y t e d * IfAU

$5* S ta raaa , If* 1* M p o tato ea . da* Agr* t e * S ta . S a l, S3* 1S94*

34* S tie r , 1* U A phy sio log ical study o f g r a t e and F ru itin g o f th e toast© u t e rsfsreise© to th e e ffe c t e f c e rta in c lim atic and edaphlc con d itio n s. fh .8* The*la* M ir* o f t e s t e d * 1939.

37* ThoErpaon, S* C* cad S e a ttle , <f* H* Proximal dominance la eiieet po­ta toes* te e * Acer* See* Seri* Set* 2$i 270-275. 1931.

33* T b te r , L* I . A v a r ie ta l study e f th e a ^ a c e p tlh llity e f sweet t e r ­r ie s to cracking , i d t e Agr. lap* St*» M U 211* 1934.

39* F e rse r, 1* A phy sio log ical t e d ? e f cracking la Stayson Mtnessp apples* tear* Agr* Bee. 51* 191-222. 1935*

40, H iatd ogy e f **»!* f r a i t t 1!—** in re la tio n to cracking .JonrT i« r . Bm . 57i 8 1 3 - ttt. 1938.

41* o f spsoftteg la sweet c h e rrie s follow ing th euse o f e d e t e sp rays. te e * fa ir* See* t e t * Bel* 34s 271- 274. m

42* and B lodgett, 1* C« R iyeio log tcal s ta d ia s e f erael&agt e r r i e e . I d t e Agr* lap* Sts* M U l i t * 1931*

43* t e w , 4* %* and B ra s s , 14 B* B L t lleaf IM ctlK tessddLU , Co*, l e t m t £ t e ^ nrr.wir.OTmR

44*- M e te r, J* 1*. sod H arter, 1* 4* . t e d cork fc re a tio n l a th e m ee t p o ta to , tear* Agr* las* S it 437-447* 1921*

45* M ote , F* sad la a r ita e n , <?* 4* F actors l a th e incep tion and develop­ment o f fseariam ro t la sto red p o ta to es . 1* 3 . Dept. Agr* Tech* Bd* 62. 1923*

105

k%

Wmmr* H» 0# ftie w i axil prevention a t aocbsanioal injmiy of Hair* Agr* Ikp* Sio# BaJU 360# 1931*

aod M fc , 0* induction o f ol» IworOOOb tia o by roob

o f lobe cropI#

, I* 0* Apply bertK bo lappovo qptollby of m ob pobabets* • 0* Spoo* CAro* So# 1* JUptfel#

♦

T O A

BAXSOi AflMl i

Bogrea* Doctor o f Philosophy., 1952^

Bate of Birth* unr i 21, Ifif*

Place o f Birth* Cairo, Bgyjpt.

Seeendcue^r BiaeirtfcSsBi HErAM18***- fffg$t Oaslre*

C o lleg iate In e tI ta tle n e attended*

M l e t OelAeg© o f A gricu ltu re, %3rpt* 1941-45*Baoholor o f BdAe**®© (Agy»} Jooof lf |5 »

tfn iw eity of ItextaA# 19UMif Kaster e f Selene#, 1950.aa'fk fM&t Ildeeu&SlAiV'Alt wWr W *&pm4

P ub lications *

1* BMCfcttan, A* A* «x4 F* 0* S tark , ill?* A eeapatlaen o f sp rou tsm l irine em itinga f i r sweet po tato peedaetlo iu fraae* Penin. Horfc. Soc. (B ui. But, S t. Bd. B g rie .) 19 (1 » 9 ) i 34-37. 1950.

2# ..... .., ; . ..... ..... ..... . .. f& s ff ti a»^Ati% m istructural m M m m m : reeta of Maryland Goldenaral |« M |f OaNtilflEO Mtfoot B0t&&OeS 4UH re la te d t# CaNtelfelllEe fill PSNMMIJ

J* Scott, U I*» Stark, F* C«, Hattheim, V» A*, H-Kettan, A# A*Oglo, V* I* , and Duncan, A# A ifcegreee report on sweet potatocracking awperlistnAa* Isp th $i» Agr* See* l i t 2AW^0* 1950*

P osition s held*

fe tch in g #»a Hfff a p ^ A aelstsaat, Fetjad l e t U niversity , o fAgrles&hars, BapoptaaKdfc e f ^ i*ti*SB>1i'fefor ,p (V egetables) , l% ft i|ffi

2dfe*,MMifreer * asdMSlfcet atWL 92iBh<2 Bwmfcdipfe.iS'd sad tSdawsiMf aa&eaft ¥\ teeeaiwBsd9'9EiiuM*d9 st'dt- dJMPOSO SW WC4.f*r#A mj wl Wmwg iJtiffw, Jt yKTuMBB V w* WF«J^lLLvSr@,19A2- *

a

' ygafap^ i A ssistan t, IMivoraAty e f MaB^Aaad, iapsrhBM^t e f M orii- c u ltu re , 1951-52.