Perennial grasses for the Texas South Plains Alamo switchgrass yielded most among 13 grasses, then WWB Dahl and Caucasian old world bluestem. Low irrigation (4.3 inches annually) yielded 15 to 75% above dryland, but 8.7 inches of irrigation per year had minimal impact on further increases.
Quantifying impacts of limited irrigation on soil carbon sequestration in no-till systems Application of irrigation water increased soil organic carbon (C) concentration in the top 4 inches of soil at Garden City, KS, but not at Tribune, KS. Irrigation had, however, no effects on soil C fluxes in the short term.
the Ogallala Aquifer
Ogallala Initiative is a project funded by the United States
Department of Agriculture-Agricultural Research Service
(USDA-ARS). The Initiative provides permanent funding for
several research projects on water conservation for the
Ogallala Aquifer through a consortium between USDA-ARS,
Kansas State University, Texas A&M University, Texas Tech
University, and West Texas A&M University.”
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