Raised-Bed Troughs for Strawberries: Irrigation Water ...cesantabarbara.ucanr.edu › files › 75482.pdf · Raised-Bed Troughs for Strawberries: Irrigation Water Management Dong

Raised-Bed Troughs for Strawberries: Irrigation Water Management

Dong WangUSDA ARS, Parlier, CA

USDA-ARS ~ Water Management ResearchSan Joaquin Valley Agricultural Sciences Center ~ Parlier, California, USA

__________________________________________________________________________________________________________________________________________________

Medium Irrigation Level (%ET)__________________________________________________________________________________________________________

2008-2009 A B C D

Soil (sandy loam) 100 150 NA 200Coir 100 150 NA 200Peat 100 150 NA 200Peat-Perlite 100 150 NA 200Peat-Rice hulls 100 150 NA 200Coir-Rice hulls 100 150 NA 200

2009-2010

Coir 100 150 150/6 200Peat-Perlite 100 150 150/6 200Peat-Coir-Rice 100 150 150/6 200

__________________________________________________________


Field Measurements•TDR water content•Temperature•Weather•Yield

2009

2010


2010

0

200

400

600

800

1,000

4/1 5/1 5/31 6/30 7/30 8/29 9/28

Time

Cumu

lative

irriga

tion (

mm)

A, 100ETB, 150ETC, 150ET_6mmD, 200ET

2009

0

200

400

600

800

1,000

4/1 5/1 5/31 6/30 7/30 8/29 9/28

Cumu

lative

irriga

tion (

mm)

A, 100ET

B, 150ETD, 200ET


2009, 100ET

0.1

0.2

0.3

0.4

0.5

5/25 5/26 5/27 5/28 5/29 5/30 5/31

Wat

er c

onte

nt (c

m3 /c

m3 )

Soil Peat-Perlite Peat-Rice hulls


2010, Peat-Perlite

0.2

0.4

0.6

0.8

1.0

7/25 7/27 7/29 7/31 8/2 8/4 8/6 8/8

Wat

er c

onte

nt (c

m3 /c

m3 ) A, 100ET B, 150ET

C, 150ET/6mm D, 200ET


2010, Coir

0.2

0.4

0.6

0.8

1.0

7/25 7/27 7/29 7/31 8/2 8/4 8/6 8/8

Wat

er c

onte

nt (c

m3 /c

m3 ) A, 100ET B, 150ET

C, 150ET/6mm D, 200ET


2009-2010 Santa Maria/Nipomo Irrigation Experiment

2.00

2.25

2.50

2.75

3.00

3.25

3.50

3.75

4.00

4.25

4.50

4.75

5.00

09/06/10 09/09/10 09/12/10 09/15/10 09/18/10 09/21/10 09/24/10 09/27/10

Time

TDR

Rea

ding

s

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

5.5

6.0

6.5

7.0

7.5

8.0

Irrig

atio

n (m

m)

Coir_1

Coir_2

Coir_3

Soil_Coir

Irrigation - Media


Water Retention Apparatus

* Modified from Blok et al., 2008. Analytical methods used in soilless cultivation. Pp. 245-289. IN: M. Raviv and J.H. Lieth (Eds) Soilless Culture-Theory and Practice. Elsevier, Amsterdam.


0%

20%

40%

60%

80%

100%

0 10 20 30 40 50

Soil Moisture Tension (cm)

Wat

er C

onte

nt (v

/v) Coir Coire-Rice

Peat-Perlite Amended soil


Yield Measurements


Coir, 2009

0

10,000

20,000

30,000

40,000

50,000

4/1 5/1 5/31 6/30 7/30

Cum

ulat

ive

yiel

d (k

g/ha

)

A, 100ET

B, 150ET

D, 200ET


Santa Maria, 2009(4/17/2009 - 7/27/2009)

102 days

30,000

35,000

40,000

45,000

50,000

55,000

60,000

Soil Coir Peat Peat-Perlite Peat-Rice Coir-Rice

Mar

keta

ble

Yie

ld (k

g/ha

)

100%ET150%ET200%ET

aab

b

a abb


Coir, 2010

0

10,000

20,000

30,000

40,000

50,000

60,000

3/16 4/15 5/15 6/14 7/14 8/13 9/12

Cum

ulat

ive

yiel

d (k

g/ha

) A, 100ET

B, 150ET

C, 150ET_6mm

D, 200ET

Grower Soil Bed


Santa Maria, 2010(3/27/2010 - 9/18/2010)

176 days

30,000

35,000

40,000

45,000

50,000

55,000

60,000

Coir Peat-Perlite Peat-Coir-Rice

Mar

keta

ble

Yie

ld (k

g/ha

)

100%ET150%ET150%ET/6mm200%ET


Irrigation Treatment Medium Yield (kg/ha) Pct of StdGrower Standard Fumigated Soil 52,698 100%

Irrig-100%ET, 3mm Coir 48,490 92%Irrig-150%ET, 3mm Coir 50,293 95%Irrig-150%ET, 6mm Coir 50,872 97%Irrig-200%ET, 3mm Coir 51,432 98%Irrig-100%ET, 3mm Peat-Rice-Coir 44,734 85%Irrig-150%ET, 3mm Peat-Rice-Coir 48,939 93%Irrig-150%ET, 6mm Peat-Rice-Coir 47,652 90%Irrig-200%ET, 3mm Peat-Rice-Coir 48,215 91%Irrig-100%ET, 3mm Peat-Perlite 48,541 92%Irrig-150%ET, 3mm Peat-Perlite 51,213 97%Irrig-150%ET, 6mm Peat-Perlite 51,184 97%Irrig-200%ET, 3mm Peat-Perlite 49,385 94%

2009-2010 Santa Maria/Nipomo

Irrigation Experiment


Santa Maria, CA

0

5

10

15

20

25

30

5/1 5/16 5/31 6/15 6/30 7/15

Air t

empe

ratu

re (o C

)

2009 2010


2009-2010 Santa Maria/Nipomo RaBet Experiment, Green Mulch

0

5

10

15

20

25

30

11/26/09 11/27/09 11/28/09 11/29/09 11/30/09

Time

Tem

pera

ture

(C)

Tair under mulch - Std soil bed

T 5cm depth - Std soil bed

Tair under mulch - Peat:perlite trough

T 5cm depth - Peat:perlite trough


Aug 11, 2009

Summary:

TDR soil moisture measurements reflected in irrigation treatments, i.e. 200%ET>150%ET>100%ET

Substrate media have lower water retention capacity than amended soil, e.g. higher near-saturation water content

Significant yield responses between substrate treatments in 2009, not in 2010

Variable yield responses to irrigation treatments but not statistically significant

Higher subsurface temperature in media than in standard soil beds

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Raised-Bed Troughs for Strawberries: Irrigation Water ...cesantabarbara.ucanr.edu › files › 75482.pdf · Raised-Bed Troughs for Strawberries: Irrigation Water Management Dong