Sustainable Practices in Water Management. Environmental Sensitivity Water Improvement &...
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Transcript of Sustainable Practices in Water Management. Environmental Sensitivity Water Improvement &...
CALIFORNIA COTTONSustainable Practices in Water Management
SUSTAINABILITY
Econ
omic
Impr
ovem
e
nt
Com
mun
ity
Supp
ort
Envi
ronm
en
tal
Sens
itiv
ity
SUSTAINABILITY – BEST MANAGEMENT PRACTICES
SUSTAINABILITY – BEST MANAGEMENT PRACTICES
Environmental Sensitivity
Water Improvement & Conserv
ation
Energy Development & Conservation
Crop Protection Materials Efficiencies
Soil Enrichm
ent & Conserv
ation
Environmental Sensitivity
CALIFORNIA WATER DEVELOPMENT HISTORY•Tribal water use
•Spanish missionaries•Channeling seasonal river flows
•Early California Water Developers Miller and Haggin•Agricultural Development•Flood Control – Disease Control – Urban Security•Miller - Haggin Agreement•Dual system of water rights confirmed by California State Supreme Court April, 26, 1886•Appropriation vs. Riparian (in English Common Law)
•Ground water extraction• Centrifugal Pump Introduction – water wells (Early
1900’s)•Government authorized systems
•Moving water away from natural watercourses
IRRIGATION SOURCES
10%10%
10%
30%
40%
California Water Sources
Natural River FlowsState Water ProjectColorado RiverCentral Valley ProjectUnderground Pumping
IRRIGATION METHODS
40%
31%
29%
Application Method
GravitySprinklerDrip / Micro
IRRIGATION METHODS
59%
10%
29%
Cotton Application Method
GravitySprinklerDrip / Micro
REDUCING AG DEMAND FOR WATER SUPPLIES
(PRODUCING MORE WITH LESS)
1930 1950 1980 20100
0.5
1
1.5
2
2.5
3
3.5
4
4.5
Yield (bales/ac)Applied Water (feet/acre)
California Cotton Yields and Water Use History
REDUCING AG DEMAND FOR WATER SUPPLIES
•Regulating Plant Growth•Mepiquat Chloride use in cotton•Reduction of Fertilizer•Regulated Deficit Irrigation
•Advanced Genetic Modification•Reduction of Pesticides – in harmony with IPM practices
•Technology for more precise mgmt•Laser leveling, GPS and variable rate apps•Drip irrigation systems•More time-sensitive technologies•Enabling technologies
SUSTAINABLE CALIFORNIA COTTON
Final Thoughts about California Cotton
• California’s SJV Cotton is unique
• Vastly Different Water Rights
• Leader in Adoption of Sustainable BMP’s
• Significant Contributor to Agricultural Diversity