Convection and accumulation of trifluralin herbicide in the soil in field conditions

Nowadays, one of the most important purposes in agricultural areas is to provide high agricultural production in order to supply the increasing food requirement according to the increasing population. In this context, many agricultural inputs which are used in order to get more yield from unit area effect the agricultural production system negatively. Herbicide is one the most important inputs, pollutes the natural resources such as water and soil and effects the living creatures by reaching to the rivers, lakes and seas and underground waters besides several macro and micro livings or effects the food chain by cumulating in these living organisms. This research includes the soils to which the irrigation application is done by the water in the wells in Turgutbey irrigation areas in Thrace region. Convection and accumulation of trifluralin herbicide in different layers of the soil were examined. Sampling was done in 16 different points and 3 layers which had different organic matters and structure. Trifluralin residual amounts were determined in 1200 (max.) ug/L level with 2,4 (min.). The trifluralin amounts were determined to be higher in the top layers of the profiles in the soil samples but decline in the concentrations was seen in the substratum. Besides, the trifluralin concentrations in the soils taken in spring were determined to be higher than the concentrations in the soil samples in autumn