Ecology, Environment and Conservation Paper

Vol 21, Issue 1, 2015; Page No.(395-398)

ENHANCING PRODUCTIVITY OF GROUNDNUT (ARACHIS HYPOGAEA L.) BY WEED MANAGEMENT UNDER CLIMATE CHANGE CONDITION

Satyakumari Sharma, B.K. Sagarka, R. Sharma, M. Meena and R.K. Mathukia

Abstract

A field experiment was conducted during the kharif seasons of 2012-13 and 2013-14 on medium black clayey soil at Junagadh (Gujarat) to study the effect of various pre and post-emergence herbicides in groundnut and their integration with hand weeding. Pendimethalin 0.900 kg ha-1 as pre-emergence (PE) followed by imazethapyr 75 g ha-1 at 20 days after sowing (DAS) was found equally effective to the weed free in controlling weeds and improving growth, yield attributes and quality parameters viz., plant height, branches, dry matter accumulation, number of pegs and mature pods/plant, shelling, 100-kernel weight, pod and haulm yields and protein and oil content in kernel, followed bypendimethalin 0.900 kg ha-1 as PE supplemented with hand weeding (HW) and interculturing (IC) at 40 DAS and propaquizafop 90 g ha-1 at 20 DAS supplemented with HW and IC at 40 DAS, and HW & IC at 20 & 40 DAS. Although highest net monetary return (Rs. 38,404 ha-1) and B:C (2.56) was recorded in with application of pendimethalin 0.900 kg ha-1 as pre-emergence supplemented with imazethapyr 75 g ha-1 at 20 DAS.

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