| Ref.: | The fate of a pesticide in soil is governed by three fundamental processes - 1) sorption by soil organic matter and other soil particles, 2) chemical or biological transformation, and 3) transportation to the atmosphere, surface water and/or ground water. The soil properties such as texture, structure, microbial populations and activity, nutrient status of soil, pH, and organic carbon contents are variable in space and time and these in turn affect the sorption, degradation and transport of pesticides in soils. Estimations by pesticide fate models may be improved if this variability is accounted for. The purpose of this Ph.D project at SLU is to gain a better understanding of the variability of pesticide fate at catchment scale. |