Soil water content influence on pesticide persistence and mobility

This chapter has been focused on to understanding the persistence and mobility of selected pesticides in the unsaturated soil zone under varying irrigation treatments. The movement of the pesticide can be determined in subsurface through open source software like HYDRUS-1D. The results of various studies in technical literature have shown that numerically simulated outputs through HYDRUS-1D have a good agreement with the experimental results. Through model simulations, regulation strategies can be suggested towards safe dosages of pesticides with respect to different irrigation treatments. This chapter will provide a step-by-step procedure towards numerical simulation of pesticide with the usage of HYDRUS-1D and can be utilised for safeguarding water requirements in the agricultural fields.