the use of polymer study at fresno state

IRRIGATION TECH SEMINAR SERIES

Polymer Study Polymer Study mOasismOasis

California State University, Fresno – Center for Irrigation Technology – AgWaterEnergy Center


Water Use Efficiency on Vegetable Crops

Water Use Efficiency for Specialty Crops- CDFA

9:00- 9:15 am Welcome to AgWaterEnergyCenter Bill Green 9:15- 10:15 am Management Strategies for WUE in Vegetable Crops Dr. Dave Goorahoo

10:15- 10:45 am mOasis Polymers Bardia Dehghanmanshadi

10:45-11:00 am Break

11– 11:30 am Polymer Study at Fresno State Kaomine Vang, CIT 11:30 – 12:00pm Optional Trip to the Test Site



Purpose

• ObjectiveEvaluate the effects of mOasis gel on available soil

moisture in the root zone and by extension, investigate its influence on crop yield of processing tomatoes under regulated deficit irrigation.



Experimental Plot• The experimental trial will be run in a field site

east of the Center for Irrigation Technology main office. The size of the study area will be approximately 14,400 square feet and contain largely sandy loam soils. The field will be split into 150 square feet plots split evenly into control and treated areas. The varying plot configurations are detailed further in Figure 1



Layout• 12 different treatments

1. 100% Water, 100% Fertilizer, 100% Treatment2. 100% Water, 100% Fertilizer, 80% Treatment3. 100% Water, 80% Fertilizer, 100% Treatment4. 100% Water, 80% Fertilizer, 80% Treatment5. 80% Water, 100% Fertilizer, 100% Treatment6. 80% Water, 80% Fertilizer, 100% Treatment7. 80% Water, 80% Fertilizer, 80% Treatment8. 80% Water, 100% Fertilizer, 80% Treatment9. 100% Water, 100% Fertilizer, No Treatment10. 100% Water, 80% Fertilizer, No Treatment11. 80% Water, 100% Fertilizer, No Treatment12. 80% Water, 80% Water, No Treatment



Layout30

ftI 1

F 1T 1

I 2F 2

CI 1

F 1T 1

- 3I 2

F 1T 1

- 2

I 1F 1

T 2I 1

F 2T 1

- 3

I 2F 1

T 2 -

3I 1

F 2C -

3I 1

F 2T 1

- 2I 1

F 2T 1

I 2F 2

T 1 -

2I 1

F 1T 1

- 2I 1

F 1C -

3I 1

F 2T 2

- 2

I 2F 2

T 1 - 3

I 2F 1

T 1 - 3

I 1F 2

C - 2

I 1F 2

T 2I 2

F 1T 2

I 2F 2

C - 2

I 1F 2

T 2 -

3I 1

F 1C -

2I 2

F 2C -

3 I 2

F 1T 1

I 2F 1

CI 2

F 2T 2

- 3I 2

F 2T 1

I 2F 2

T 2I 2

F 2T 2

- 2

I 2F 1

C - 2

I 1F 2

CI 2

F 1T 2

- 2I 1

F 1T 2

- 3I 1

F 1C

I 1F 1

T 2 -

2I 2

F 1C -

3Ea

st Blo

ck

20 ft

30 ft

I 2F 2

T 1 - 6

I 2F 2

C - 5

I 2F 2

T 1 -

4I 2

F 1T 1

- 6I 2

F 2T 2

- 5

I 1F 2

T 1 -

4I 2

F 1T 2

- 6

I 1F 1

C - 4

I 1F 1

T 1 - 4

I 1F 1

T 1 - 5

I 1F 1

T 1 - 6

I 2F 1

T 1 -

5I 2

F 2C -

4I 2

F 2T 2

- 6I 1

F 2T 1

- 5I 2

F 2T 1

- 5

I 1F 2

C - 5

I 1F 1

T 2 - 4

I 1F 1

T 2 -

5I 2

F 1C -

4I 1

F 1T 2

- 6I 1

F 1C -

6I 1

F 2C -

4I 1

F 2T 1

- 6

I 1F 1

C - 5

I 1F 2

T 2 -

5I 2

F 1T 1

- 4

I 2F 2

T 2 -

4I 2

F 1T 2

- 4

I 1F 2

C - 6

I 2F 1

C - 6

I 1F 2

T 2 -

6I 1

F 2T 2

- 4I 2

F 1C -

5I 2

F 1T 2

- 5I 2

F 2C -

6W

est B

lock

North

South

West

180 ft (5 ft per bed)

East

Buffer

80 ft

Figure 1: Plot layout describing different mOasis gel application rates (T1, T2, C), irrigation (I1, I2) and fertilizer (F1, F2) treatments.



Methods

• Control blocks get “No Treatment”• Treated blocks will have “Polymer” shanked in

– Within the first 6 inches– There will be a buffer between blocks

• Each plot is 10ft x 5 ft



Equipment

• Data Loggers used to record Soil Moisture Data• Decagon EC-5 soil moisture sensors to record

the soil moisture content



Data

• Yield– Red, Green, Breakers, Non-Marketable, Disease

• Soil Moisture Data• Nitrogen



Yield Data



Total N



Problems• Problems

– Bottom End Rot– Small Fruit– Spider Mites

• Soil Penetration Issues– No moisture below 2 feet– Irrigation Scheduling– Season (Planting Date)



Future Research

• Test Again Spring 2015

30 ft

I 1F 1

T 1I 2

F 2C

I 1F 1

T 1 - 3

I 2F 1

T 1 -

2I 1

F 1T 2

I 1F 2

T 1 -

3I 2

F 1T 2

- 3

I 1F 2

C - 3

I 1F 2

T 1 - 2

I 1F 2

T 1I 2

F 2T 1

- 2

I 1F 1

T 1 - 2

I 1F 1

C - 3

I 1F 2

T 2 -

2I 2

F 2T 1

- 3I 2

F 1T 1

- 3I 1

F 2C -

2I 1

F 2T 2

I 2F 1

T 2I 2

F 2C -

2 I 1

F 2T 2

- 3

I 1F 1

C - 2

I 2F 2

C - 3

I 2F 1

T 1I 2

F 1C

I 2F 2

T 2 - 3

I 2F 2

T 1I 2

F 2T 2

I 2F 2

T 2 -

2I 2

F 1C -

2I 1

F 2C

I 2F 1

T 2 - 2

I 1F 1

T 2 - 3

I 1F 1

CI 1

F 1T 2

- 2

I 2F 1

C - 3

East

Block

20 ft

30 ft

I 2F 2

T 1 - 6

I 2F 2

C - 5

I 2F 2

T 1 -

4I 2

F 1T 1

- 6I 2

F 2T 2

- 5

I 1F 2

T 1 -

4I 2

F 1T 2

- 6

I 1F 1

C - 4

I 1F 1

T 1 - 4

I 1F 1

T 1 - 5

I 1F 1

T 1 - 6

I 2F 1

T 1 -

5I 2

F 2C -

4I 2

F 2T 2

- 6I 1

F 2T 1

- 5I 2

F 2T 1

- 5

I 1F 2

C - 5

I 1F 1

T 2 - 4

I 1F 1

T 2 -

5I 2

F 1C -

4I 1

F 1T 2

- 6I 1

F 1C -

6I 1

F 2C -

4I 1

F 2T 1

- 6

I 1F 1

C - 5

I 1F 2

T 2 -

5I 2

F 1T 1

- 4

I 2F 2

T 2 -

4I 2

F 1T 2

- 4

I 1F 2

C - 6

I 2F 1

C - 6

I 1F 2

T 2 -

6I 1

F 2T 2

- 4I 2

F 1C -

5I 2

F 1T 2

- 5I 2

F 2C -

6W

est B

lock

North

South

West

180 ft (5 ft per bed)

East

Buffer

80 ft



Questions?



Pre – Post Test

• Please complete the Pre and Post test and Evaluations.

the use of polymer study at fresno state

Education

fresno center

fresno state kaomine

regulated deficit irrigation

study area

plot layout

specialty crops cdfa9

west blocknorthsouth

square feet plots