It was examined that weeds cause a lot of problems in the crop field. Weeds compete with the main crop for nutrients, water, food, space, sunlight etc. Weeds utilize the nutrients provided to the main crop and sometimes dominate the main crop. Some weeds are very noxious and they are harmful for both humans as well as animals. It is clearly revealed from studies done in field of weeds that use of herbicides used to control weeds cause many effects on soil as it leads to degradation in the quality of soil, water as well as it pollutes environment. And also repeated use of same herbicide makes the weeds resistant to that herbicide. Many ways used to control weeds like Mechanical control, Cultural control, Chemical control and Biological control. But now a days chemical control is too much widespread in which use of different herbicides done. Overuse of chemical fertilizers harms soil health as well as decrease quality of environment. So a new approach called Integrated Weed Management (IWM) came into light in which all the approaches are combinely used just to reduce the alone use of herbicides.
