Integrated weed management in waiting and spring planting of rainfed chickpea

Document Type : Research Paper

Authors

1 Dryland Agricultural Research Institute

2 Tehran University

Abstract

In order to compare the performance of different weed mangement methods in spring and waiting planting of rainfed chickpea this experiment was carrid out as split plot in randomized complete block design with four replications at Maragheh agricaltural research station during 2004–2005 crop season. The main factors were planting ِdates including the waiting and spring planting. Sub plots were weed control treatments with 11 levels included two levelds of handy weeding, three levels of mechanical control, five levels of chemical control and check without contol. Comparison of means showed that handy weeding was better treatment comparing chemical and mechanical control and had more grain yield at both planting dates. Among chemical weed control methods, the treatment Pursuit in waiting planting had 606.2 kg.ha-1 grain yield was the best treatment. Among mechanical control the treatment of inter-row caltivation along with hand weeding on crop rows in spring planting had 764.9 kg.ha-1 grain yield was the best treatment. Economical evaluation of different herbicides showed that Pursuit had %124 net economic gain in comparison with check, and with %57 net gain over full control, it was the best treatment in the waiting planting method. Full handy control with %126 and mecahanical control with %112 net gain over check were more economical treatments in the spring planting date.