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0.5 percent 15 thousand 2-foot depth 50 percent adequate fertility AGRICULTURE application rate April and September available moisture storage available water balance Bavel corn crop corn irrigation corn production corn roots cost crease distribution drainage drought periods early dent stage EASTERN UNITED estimated Field capacity field corn field ditches furrow irrigation Furrow Method gated pipe growing season growth HANDBOOK 14 humid East Inch Inch inches of water increase intake rate irri Irrigated corn irrigated when 50 Irrigation Guide 26 IRRIGATION OF CORN June June 9 Mexico silt loam moisture in Pied needed Plain sandy soils rain rainfall rate of water reduce root zone runoff sandy loam Soil Conservation Service soil storage soil surface Soil texture South Carolina Sprinkler irrigation summer droughts supply sweet corn tasseling to early tion transpiration Truck Crops Branch U. S. DEPT unirrigated usually water applied water for irrigation water intake water loss