Integrated weed management in rainfed groundnut (Arachis hypogaea)

Abstract

An experiment was conducted during the rainy season of 1996, 1997 and 1998 under rainfed conditions on integrated weed management in groundnut (Arachis hypogaea L.) in Alfisols of Triupati. Pre-emergence application of pendimethalin, metolachlor, oxadiazon either at higher or at lower concentration+ hand-weeding at 30 days after sowlng effectively controlled the weed population and reduced the weed denslty compared with the unweeded control. Among the herblcldes tried, pendlmethalln 0.75 kg allha applied at pre-emergence+ 1 hand- weeding at 30 days after sowlng had a pronounced effect on control of weeds, reduced the weed dry matter and led to higher yield attributes, pod yield, weed- control efficiency, lower benefit :cost ratio and hlgher and weed Index and ail these parameters were comparable to that of hand-weeding twlce at 20 and 40 days after sowing