Irrigation Efficiency and Controlled Root-Zone Wetting in Deep Sands

摘要

Ten field water management experiments were conducted with corn, soybeans and peanuts during 1977, 1978, and 1979 on well-drained sandy soils at Gainesville and Live Oak. Irrigation scheduling treatments varied from one to eight per experiment. A simple computer simulation model provided an estimate of seasonal evapotranspiration, drainage, and change in soil storage. These data and calculated water use efficiencies served as a test of the effectiveness of various irrigation scheduling strategies, and provided information on crop response to water stress.