Evaluation of suitable weed management programme in hybrid maize

摘要

Maize (Zea mays L.) is one of the most important cereal crops in the world agricultural economy both as food for human beings and feed for animals. Weed infestation is a major constraint in maize cultivation resulting in the reduction of yield to the extent of 33 to 72 percent (Thakur and Sharma, 1996). The traditional method of hand weeding is time consuming and constrained with labour scarcity, though it is considered as the best. Herbicide usage is limited because the recommended herbicides likeatrazine, paraquat and metolachlor have limited selectivity and fail to control the perennials. For the control of perennial weeds, different control measures need to be integrated. If the various components of integrated weed management are implementedin a systematic manner, acceptable level of weed control can be achieved (Dubey et al., 1996). Integrated weed management is graining importance under the present trend of fanning system. An attempt was made to evolve a suitable weed management programme and the best nozzle for herbicide spraying in maize.