Invasive Species Compendium

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Abstract

Evaluation of weed management practices in groundnut in Maharashtra, India.

Abstract

A field experiment was conducted during the rainy season of 1994-97, in Jalgaon, Maharashtra, India, to find a suitable weed management practice for groundnut. There were 9 treatment combinations consisting of two pre-emergence herbicides, pendimethalin at 1.0 kg/ha and metolachlor at 1.0 kg/ha, alone and in combination with intercultivation (IC) and hand weeding (HW) at different times. Groundnut cv. JL 220 was grown as a test crop at interrow spacing of 30 cm and intrarow spacing of 10 cm. The weeds associated with groundnut in the field were Amaranthus viridis, Parthenium hysterophorus, Acalypha indica, Cyperus rotundus, Cynodon dactylon, Panicum repens, Eclipta alba and Trianthema portulacastrum. The predominant species were Cynodon dactylon, Cyperus rotundus and Acalypha indica. The weed-free control recorded the least weed dry matter production, highest weed control efficiency, pod yield (1432 kg/ha) and net returns (Rs 14797). This treatment was comparable with the treatments receiving herbicides in combination with IC and HW.