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The University of California, prohibits discrimination against or harassment of any person employed by or seeking employment with the University on the basis of race, color, national origin, religion, sex, physical or mental disability, medical condition (cancer-related or genetic characteristics), ancestry, marital status, age, sexual orientation, citizenship, or status as a covered veteran (special disabled veteran, Vietnam-era veteran or any other veteran who served on active duty during a war or in a campaign or expedition for which a campaign badge has been authorized). University Policy is intended to be consistent with the provisions of applicable State and Federal laws. Inquiries regarding the University's nondiscrimination policies may be directed to the Affirmative Action/Staff Personnel Services Director, University of California, Agriculture and Natural Resources, 1111 Franklin, 6th Floor, Oakland, CA 94607-5200 (510) 987-0096.
b y R o g e r D u n c a n
P o m o l o g y a n d V i t i c u l t u r e A d v i s o r
U.S. Department of Agriculture, University of California, and Stanislaus County Board of Supervisors cooperating
3800 Cornucopia Way, Suite A, Modesto, CA 95358 (209) 525-6800, FAX (209) 525-6840, e-mail - [email protected], website: cestanislaus.ucdavis.edu
2.0 hours of Continuing Education
Credits pending
December 2010,Vol. 15.3 University of California Agriculture and Natural Resources
North San Joaquin Valley North San Joaquin Valley North San Joaquin Valley Cling Peach DayCling Peach DayCling Peach Day
Sponsored by UC Cooperative Extension & the Cling Peach Board
December 15, 2010 8:30 – Noon
Stanislaus County Agricultural Center, Harvest Hall Service and Crows Landing Roads, Modesto
8:00 Registration, coffee, snacks & socializing 8:30 Program begins
{ Light Brown Apple Moth Maxwell Norton, Farm Advisor, UCCE Merced County { Peach IPM Project, PTB, OFM & Other Pests Walt Bentley, IPM Entomology Advisor, UC Kearney Ag Center { Cling Peach Board Business: -Board Member Nominations J. D. Allen, Cling Peach Board -Updates on Domestic Promotion & Other Initiatives Sarb Johl, Board Chair & Ginny Hair, Domestic Production Leader { Nematode Management Strategies Mike McKenry, Nematologist, UC Kearney Ag Center { Using the String Blossom Thinner to Increase Yields & Reduce Labor Roger Duncan, UCCE Stanislaus County Scott Johnson, Pomology Specialist, UC Kearney Ag Center { The Barrel Thinner; a New Tool w/ Potential to Mechanically Thin Fruit Scott Johnson, Pomology Specialist, UC Kearney Ag Center
THE SCOOPTHE SCOOPTHE SCOOP o n f r u i ts a n d n u ts i n S ta n i s la u s C o u n ty
Almond Pollination with Blue Orchard Bees:Topics for Industry & Management
workshop presented byUSDA‐ARS Bee Biology & Systematics Laboratory, Logan Utah
& the University of California Cooperative Extension
December 7, 2010Stanislaus County Ag Center
Service & Crows Landing RoadsModesto, CA 95358
Questions? Contact Sara Goldman Smith, 530 751‐6378 [email protected]
ANR NONDISCRIMINATION AND AFFIRMATIVE ACTION POLICY STATEMENT FOR UNIVERSITY OF CALIFORNIA PUBLICATIONS REGARDING PROGRAM PRACTICESThe University of California prohibits discrimination or harassment of any person in any of its programs or activities. (Complete nondiscrimination policy statement can be found athttp://groups.ucanr.org/ANR_AA/files/54635.doc). Direct inquiries regarding the University’s nondiscrimination policies to the Affirmative Action Director, University of California,
ANR, 1111 Franklin St., 6th Floor, Oakland, CA 94607, (510) 987-0096. 07-2008.
8:30 ‐ 9:00 Registration & Sign‐in
9:00‐9:10 Welcome & IntroductionCarolyn Pickel & Sara Goldman Smith, University of California
9:10‐9:25 Quality Rating of Alfalfa Leafcutting Bees for Sale Miles Wendell, Pollinator Provider, Prairie Pollination Company
9:25‐9:40 Summary of CA Permits for Importing Blue Orchard BeesKevin Hoffman, Primary State Entomologist, CA Dept. Food & Agriculture
9:40‐10:00 Open Panel Questioning
10:00‐10:15 Break
10:15‐10:30Summer Development of Blue Orchard Bees Varies According to Their Source of Origin
Theresa Pitts‐Singer, USDA ARS Bee Biology & Systematics Lab
10:30‐10:45Developmental Mismatches from Interbreeding CA & Northern Blue Orchard Bees
Glen Trostle, USDA ARS Bee Biology & Systematics Lab
10:45‐11:00Supplementing Bloom to Extend Foraging Season for Blue Orchard Bee Reproduction
Jim Cane, USDA ARS Bee Biology & Systematics Lab
11:00‐11:15 Open Panel Discussions11:15‐11:30 Open Forum for Informal Introductions & Announcements11:30‐1:00 Networking, Socializing, & Tour of Pollinator Habitat Demonstration Site
Habitat partners include Xerces, NRCS, RCD, UCCE Stanislaus
Update on Minimal Pruning of Almonds Many almond growers are familiar with experiments currently being conducted by University of California farm advisors on minimum pruning of almond trees. 2010 marked the eleventh growing season for my trial in Stanislaus County, and so far the story remains the same. Trees that have gone essentially unpruned for most of the life of the orchard are still yielding as well or better than trees that have been conventionally pruned every year. Many growers who attended the field day we held in May were surprised that the trees looked much better than they anticipated. Many growers in this area have decided not to prune this year. In my trial, I am comparing four different pruning strategies. In the first strategy, the trees were initially trained to three scaffolds and have been pruned conventionally every year. In the second pruning strategy, trees were trained conventionally for the first two years but have now gone essentially unpruned for the last nine years. In the third strategy, trees were trained to four, five, or even six scaffolds and have been minimally pruned each year after (pruners are told they can make only three cuts on each tree each year). In the fourth strategy, we did not do any scaffold selection. Only limbs originating too low on the trunk were removed so they wouldn’t interfere with shakers, weed sprayers, etc. These trees have been essentially unpruned for the life of the orchard. The table below shows the Nonpareil yield for this year (2010) and the cumulative yield through the 11th growing season. Nonpareil yields were very good in 2010 (as they have been in most years in this orchard) and are very similar for all pruning strategies. Cumulatively, the unpruned trees have yielded 1260 – 1326 pounds per acre more than the trees that are pruned every year.
Although this trial needs to continue for at least another ten years, the data from this trial and all the other trials in the state tell us that we have spent too much attention (and money) worrying about pruning almond trees to maintain yield. In my opinion, trees should be trained the first year or two (or three?) to select good scaffolds and establish the basic structure of the tree. This reduces problems with scaffold splitting and improves equipment access later. Trees in windy areas may need to be pruned harder and for a longer period of time. After that, trees can go essentially unpruned except for equipment access, worker safety or to remove limbs that are broken or diseased.
Newsletter Renewal To view past newsletters or to sign up to receive The Scoop electronically, visit our website at http://cestanislaus.ucdavis.edu and look under the Agriculture section. A renewal form is located at the end of this newsletter. To continue receiving The Scoop, please return the form to our office before December 31. We DO NOT give out or sell our newsletter mailing lists to anyone.
Yield Comparison of Four Pruning Strategies of Nonpareil Almond Trees
Pruning Strategies Kernel
pounds / acre (2010)
Kernel pounds / acre (cumulative 4th –
11th leaf) Trained to 3 scaffolds & pruned annually
(conventional pruning) 3203 22,388
Trained to 3 scaffolds, pruned one more year, then unpruned since except for equipment access 3457 23,648
Trained to multiple scaffolds & minimally pruned annually (3 cuts per tree) 3241 22,418
Only lowest limbs removed for shaker access during first year (no scaffold selection); essentially unpruned except for equipment access
3395 23,714
Herbicide R
egistration on Horticultural Tree and Vine C
rops--Oct. 2010
Herbicide-C
omm
on Nam
e (exam
ple trade name)
Al
mo
nd
Pe
can
Pis
tachio
Wa
lnut
Ap
ple P
ear
Ap
ricot
Ch
erry
Nec
tarine
Pea
ch
Plu
m /
Pru
ne
Avo
cado
Citr
us D
ate
Fig G
rape
Kiw
i O
live
Po
me
granate
-------- tree nut --------
- pome -
----------- stonefruit -----------
Preemergence*
bromacil (H
yvar) N
N N
N N
N N
N N
N N
N R
N N
N N
N N
dichlobenil (C
asoron) N
N N
N R
R N
R N
N N
N N
N N
R N
N N
diuron (K
armex,D
iurex) N
R N
R R
R N
N N
R N
N R
N N
R N
R N
E
PTC
(Eptam
) R
N N
R N
N N
N N
N N
N R
N N
N N
N N
flum
ioxazin (Chateau)
R N
B R
NB
R R
R R
R R
R N
B N
B N
NB
R N
NB
NB
isoxaben (G
allery) N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
NB
NB
NB
NB
NB
napropam
ide (Devrinol)
R R
N N
N N
N N
N N
N N
N N
N R
R N
N
norflurazon (Solicam
) R
R N
R R
R R
R R
R R
R R
N N
R N
N N
oryzalin (S
urflan, Farm S
aver) R
R R
R R
R R
R R
R R
R R
N R
R R
R R
oxyfluorfen (G
oal, GoalTender)
R R
R R
R R
R R
R R
R R
NB
R R
R R
R R
pendim
ethalin (Prow
l H2 O
) R
R R
R R
R R
R R
R R
N R
N N
R N
R R
penoxsulam
(Pindar G
T) R
R R
R N
N N
N N
N N
N N
N N
N N
N N
pronam
ide (Kerb)
N N
N N
R R
R R
R R
R N
N N
N R
N N
N
rimsulfuron (M
atrix, Mana)
R R
R R
R R
R R
R R
R N
R N
N R
N N
N
simazine (P
rincep,Caliber 90)
R R
N R
R R
N R
** R
R N
R R
N N
R N
R N
thiazopyr (V
isor) N
B N
NB
NB
N N
NB
NB
NB
NB
NB
N R
** N
N N
B N
N N
trifluralin (Treflan)
R R
N R
N N
R N
R R
R N
R N
N R
N N
N
Postemergence
carfentrazone (Shark, R
age) R
R R
R R
R R
R R
R R
R R
R R
R R
R R
clethodim
(Prism
) N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
R N
N N
B N
NB
N
clove oil (Matratec)
R R
R R
R R
R R
R R
R R
R R
R R
R R
R
2,4-D (C
lean-crop, Orchard M
aster) R
R R
R R
R R
R R
R R
N N
N N
R N
N N
diquat (D
iquat) N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B N
B
d-limonene (G
reenMatch)
R R
R R
R R
R R
R R
R N
R N
R R
R N
N
fluazifop-p-butyl (Fusilade) N
B R
NB
NB
NB
NB
R R
R R
R N
B N
B N
B N
B N
B N
NB
NB
glyphosate (R
oundup, Touchdown)
R R
R R
R R
R R
R R
R R
R R
R R
R R
R
glufosinate (Rely 280)
R R
N R
R N
N N
N N
N N
N N
N R
N N
N
halosulfuron (Sandea)
N R
R R
N N
N N
N N
N N
N N
N N
N N
N
paraquat (Gram
oxone Inteon) R
R R
R R
R R
R R
R R
R R
N R
R R
R N
pelargonic acid (S
cythe) R
R R
R R
R R
R R
R R
R R
R R
R R
R N
pyraflufen (V
enue) R
R R
R R
R R
R R
R R
N N
R R
R R
R R
saflufenacil (Treevix, K
ixor) R
N R
R R
N N
N N
N N
N R
N N
N N
N N
sethoxydim
(Poast)
R R
R R
R R
R R
R R
NB
NB
R N
B N
B R
N N
B N
B
Note: This is a general guide to perennial crop herbicide registrations in C
alifornia. Labels change frequently and often contain special restrictions; therefore
you should always consult a current label before applying any herbicide.
N = N
ot registered, NB
= nonbearing, R = R
egistered
* S
everal herbicides listed under preemergence also have som
e postemergence activity.
** Sim
azine is registered on only sour cherry in CA
. Thiazoypr is registered on orange and grapefruit only.
Weed susceptibility inform
ation can be found at the Weed R
esearch and Information C
enter (http://wric.ucdavis.edu)
To our clients: We revise our mailing list periodically. This will give you the opportunity to remain on our mailing list by updating your information, please return this form to us at the above address by December 31, 2010. This will provide us with information that will help us serve you more efficiently. We do not make our mailing lists available to outside agencies. We welcome your suggestions. Please feel free to call, write, or visit us in our office. Check the appropriate box or boxes below.
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Fruit & Nut Crops Labor Management*
□ The Scoop □ Walnut News (almonds, grapes, stonefruit)
□ People in Ag: Farm Labor Management *Only available via e-mail
Field Crops Livestock
□ Stanislaus Forage Farmer □ Livestock Lines □ Dairy Newsletter
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NEWSLETTERS:
The University of California prohibits discrimination or harassment of any person on the basis of race, color, national origin, religion, sex, gender identity, pregnancy (including childbirth, and medical conditions related to pregnancy or childbirth), physical or mental disability, medical condition (cancer-related or genetic characteristics), ancestry, marital status, age, sexual orientation, citizenship, or status as a covered veteran (covered veterans are special disabled veterans, recently separated veterans, Vietnam era veterans, or any other veterans who served on active duty during a war or in a campaign or expedition for which a campaign badge has been authorized) in any of its programs or activities. University policy is intended to be consistent with the provisions of applicable State and Federal laws. Inquiries regarding the University's nondiscrimination policies may be directed to the Affirmative Action/Equal Opportunity Director, University of California, Agriculture and Natural Resources, 1111 Franklin Street, 6th Floor, Oakland, CA 94607-5200 (510) 987-0096.
University of California Cooperative Extension 3800 Cornucopia Way, Suite A Modesto, CA 95358 Tel: (209) 525‐6800 Fax: (209) 525‐6840 cestanislaus.ucdavis.edu
NONPROFIT ORG. US POSTAGE PAID
MODESTO, CA PERMIT NO. 400
UNIVERSITY OF CALIFORNIA COOPERATIVE EXTENSION 3800 Cornucopia Way, Suite A Modesto, CA 95358
CURRENT RESIDENT OR
The Scoop on Fruits & Nuts In Stanislaus County December 2010
Look Inside for more information on:
♦ NJSV Cling Peach Day
♦ Blue Orchard Bee Workshop
♦ Update on Minimal Pruning of Almond Trees
♦ Weed Susceptibility Chart
♦ Newsletter Renewal Form (please return)
Save the date for:
North San Joaquin Valley Almond Day Brought to you by
University of California Cooperative Extension
January 19, 2011 Stanislaus County Agricultural Center
Corner of Service & Crows Landing Roads, Modesto
This meeting is free and open to the public. Speakers from the University of California will present their most current research findings to the local almond industry. Look for the next meeting announcement for more information to come.
