Author(s):

Randhir Kumar, Bharati Upadhaya, Prabhat Kumar and Kaushal Kishor

Abstract: A field experiment was carried out during kharif season of 2017 at research farm of TCA Dholi, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur (Bihar) to study the “Effect of plant geometry and weed management on yield and yield attributes of summer mungbean (Vigna radiata L.)” The experiment was laid out in randomised block design with three replications. The treatment comprised of three plant geometry i.e., 20 x 10 cm, 25 x 10 cm and 30 x 10 cm and five weed management practices i.e., weedy check, hand weeding at 15 and 30 DAS, Pendimethalin 0.75 kg/ha (pre-emergence), Quizalofop-ethyl 60 g/ha at 15 DAS and Imazethapyr 60 g/ha at 15 DAS. Number of pods per plant, pod length and test weight were not significantly influenced by plant geometry. Among the weed management practices, hand weeding twice recorded significantly higher number of pods per plant, number of grains per pod and pod length than Quizalofop-ethyl and Pendimethalin. Closer row spacing of 20 × 10 cm recorded significantly higher grain yields than row spacing of 25 × 10 cm and 30 × 10 cm. Hand weeding twice although produced higher grain yield but was at par with Imazethaypr and significantly surpassed over Quizalofop-ethyl and Pendimethalin. Harvest index was unaffected by plant geometry and weed management practices.

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