The relative reduction in potential ground-water contamination due to pesticides at several sites in Utah was determined by comparing alternative irrigation system designs, water management practices and pesticides. Alternative sprinkler irrigation distribution coefficients were used to estimate infiltration depths. The movement of pesticides through soils following sprinkler irrigations was simulated with one-dimensional model. Pesticide contamination of ground water can be reduced by careful selection of pesticides, properly designed irrigation systems and improved water management techniques. Procedures for selecting an appropriate sprinkler design and pesticide are presented.
Ranjha, A.Y., Peralta, R.C., Hill, R.W., Requena, A.M., Deer, H.M. and M. Ehteshami. 1991. Effects of alternative sprinkler irrigation parameters on pesticide movement. ASAE paper no. 91‑2044. Presented by Ranjha at International Summer Meeting, Albuquerque, New Mexico, 23‑26 June 1991.