An above-average rate of growth in irrigated corn production took placed in Brookings County during the past decade. Corn is by far the largest component in the county’s mix of irrigated crops. The vast majority of Brookings County’s irrigation units are electrically powered center pivot systems. Most of the center pivots purchased during the 1970s involved traditional high pressure water distribution. By 1980, irrigators began to purchase the cheaper reduced pressure center pivot machines. But one consequence of reduced pressure water distribution is reduced yield. The research reported in this paper is based on the experience of 37 irrigators in Brookings County who raised corn grain in 1982 under 52 center pivots energized by electricity. The impacts of reduced pressure water distribution on corn yields receive special emphasis.
South Dakota State University
Taylor, Douglas, "Irregation in Brookings County: An Economic Study of Irrigated Corn" (1985). Agricultural Experiment Station Technical Bulletins (1939-2011). 75.