Efficacy of herbicides on weed density and grain yield of no till wheat
2006
Hassan, G.,NWFP Agricultural Univ., Peshawar (Pakistan). Dept. of WeedScience
Studies were initiated on Zero tillage and integration of herbicides forwheat production in a rice-based cropping system of Dera Ismail Khan, Pakistan.Zero Tillage vs. conventional tillage regimes were assigned to main-plots, whilepost em. herbicides (Buctril-M, Affinity and weedy check) were kept into sub-plots. For weed density, there were significant differences (P less than 0.05)for herbicides, while tillage regimes and their interaction with herbicides werenon-significant statistically. The tillage plots showed numerically lesser weedinfestation than no till plots. As far as the interaction is concerned, both thechemical treatments showed lower weed density as compared to weedy checkunder either tillage regime. Fleabane exceptionally grew in zero tilled plots. Theherbicide Buctril-M out yielded (P less than 0.05) Affinity and weedy check, butAffinity was statistically at par with the weedy check. The highest net benefit(Rs. 5965 ha-1) was achieved under the Zero tilled wheat covered with Buctril-M. The lowest marginal net benefit was attained in the Affinity + zero tillage. Itis thus, recommended that zero tillage may be adopted for lucrative income andsustainability of the production system with the use of Buctril-M, in the lightof our data set. Adoption of such a resource conservation technology has beena timely intervention to reduce production costs, improve efficiency of naturalresource management practices, benefit the environment, and exploit potential ofthe rice-based system.
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