Impact of Crop Rotation on Weed Management

The agriculture aimed at meeting the needs of present generation without endangering the resource base of future generation. The change from a high input and chemically intensive agriculture to a sustainable form to control weeds relies on use of low or non-monetary inputs like selection of crops and their variety, balanced nutrition, crop geometry, tillage practices, crop rotation etc. The power for investment on costly and hazardous inputs like weedicides without considering threshold levels is increasing day by day in want of higher crop production. Weedicides are also applied from field preparation to harvesting and post harvesting caused a considerable improvement in but damaged drastically the resources like soil health, crop environment, microbiota etc. and threatened by developing resistance against them. Under such circumstances, crop rotation, a part of agronomical management changes micro climate in favour of crop. The use of less persistence and highly effective herbicides either shift the weed flora or cause resistance to herbicides and endangered some crop species and damaged bio-diversity.