water use in irrigated agriculture ana ramirez. irrigated agriculture produces 40% of the food crops...
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Water use in Irrigated AgricultureAna Ramirez
2007 Rice production (000 t)
• World 650,193
Why it matters?
• USA 8,956
• Texas 9,565 cwt
FAO Statistics Division 2008USA rice
LocationLakeside irrigation District• County: Colorado, Wharton•1st crop: 247 fields / 23,012 acres
•2nd crop:118 fields /11,485 acres
Fields in production 2006-2008Estimating Water Demands for Irrigation Districts on the Lower Colorado RiverDavid R. Kracman
Growing Season
• 2006– 93 days – 20 April-22 July– 78.58 °F
• 2007– 82 days– 19 May-10 August– 79.57 °F
• 2008
Time between a field’s first water delivery and its last water delivery.
Split dateBeg_date
Weather data• Daily average during the average growing season
Sources
Graph of thiessen polygones and stations w/labelsData – National Climate Data Center– Lower Colorado River Authority– Texas A&M AgriLIFE R Center
Calculate Evapotranspiration– FAO r
Penman-Monteith– Combination Method
Temperature
Precipitation
Evaporation
Conclusions
• Water consumption• Increase water demand & decrease supply• Water consumption in 2nd crop is higher
• Other factors to consider• Conservation measures• Management practices
• Things to do• Incorporate rice coefficient• Calculate and graph storage
Questions
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