Fundamental Experiments on Moving Characteristics of Scattered Agricultural Chemicals on the Grass Land

Abstract

Groundwater contamination by agricutural chemicals is getting one of the most serious environmental problems, especially in golf course. The purpose of this study is to investigate the moving characteristics of scattered pesticides caused by heavy rain.
The contents of this study are 1) the investigation of poison characteristics of the main agricultural pesticides in golf course, 2) the analysis of data of sand-column tests based on the method of gaschromatography (GC-FTD), and 3) the analysis of experimental data of surface runoff in the grass channel model by GC-FTD.
Main results obtained are as follows: 1) most of the scattered pesticides are adsorbed by the grass and soil particles, 2) the estimated values of concentration of pesticides in the sand-column tests are a little over the permitted value, and so it is necessary to keep a lookout for the behavior, and 3) the estimated values in the surface runoff tests are no problem.