Effect of Soil Condition on Pesticide Behavior in Crop Field

Abstract

The persistence of pesticides in soil is a summation of all the reactions,movements, and degradations affecting these chemicals. Marked differencesin persistence are the rule. For example, organophosphate insecticides maylast only a few days in soil; the most widely used herbicide, 2,4-D, persistsin soil for only two to four weeks; chlorinated hydrocarbons may persistfrom three to fifteen years or longer. The persistence time of hundreds ofother pesticides, are between the extremes cited. The majority of pesticidesdegrade rapidly enough to prevent buildup in soil. Those that do not do sohave potential for environmental damage. In the article authors havestudied and discussed the pesticide persistence being directly affected byphysical characteristics of soil.