Transactions of the ASAE · 1987 · 1.1K citations · 0 references
AgricultureAgronomySoil SciencesSoil ChemistrySoil ManagementSoil ScienceHerbicide ScienceNutrient LeachingSoil ErosionAgricultural Land SystemsCrop Management Effects On ErosionGroundwater EffectsLeachingLeaching ProcessesRoot Zone CharacterizationRoot Zone Structure
ABSTRACT GLEAMS (Groundwater Loading Effects of Agricul-tural Management Systems) is a mathematical model developed for field-size areas to evaluate the effects of agricultural management systems on the movement of agricultural chemicals within and through the plant root zone. This paper describes the concepts of the hydrology, erosion, and pesticide components of GLEAMS. Results of sensitivity analysis and validation with observed bromide and pesticide data are given. The validation includes comparisons of model simulations and observed soil concentrations in the root zone, and simulated and observed leaching losses.