Bhuwan Bohara (1) *, Bikram Bhatta (2), Rajeev Joshi (1), and Kabita Subedi (3)
(1) Faculty of Agriculture, Doon (PG) College of Agriculture science and technology, Selaqui, Dehradun, India
(2) Faculty of Agriculture, Agriculture and Forestry University, Rampur, Chitwan 44209, Nepal
(3) Plant Protection Officer, Department of Agriculture, Hariharbhawan, Lalitpur, Nepal.
(*Corresponding author: Bhuwan Bohara Email: bhuwanbohara50@gmail.com)
Received:16/12/2021 Accepted: 13/11/2022
Abstract:
The study was conducted to evaluate the effect of different weed management practices and row spacing in yield and yield attributing characteristics of green gram (Vigna radiata L. Wilczek) during spring season, 29th Feb – 24th May, 2020 in Duduwa, Banke, Nepal. Nine treatment combinations consisting of three weed management treatments (W1: Control (no weeding), W2: Pre-emergence application of Pendemethalin at a rate of 1lit.ha-1, and W3: Hand weeding at 30 DAS (Days after sowing)) and three row spacing (S1: 30 cm × 10 cm, S2: 40 cm × 10 cm, S3: 50 cm × 10 cm) were tested by deploying factorial randomized block design (FRBD) with three replications. The plant height (55.73 cm), Number of pods per plant (43.00), Number of seeds per pod (10.83), and 100 grain weight (7.08 gm.) was recorded more in W3. Dry weight of weeds (9.39 gm. m-2) was recorded more in W2. More seed yield (1136 kg. ha-1) and biological yield (3222 kg. ha-1) were found in W1. Significantly, the plant population during 16 DAS (43.72 plant. m-2) and during 86 DAS (42.17 plant. m-2), and plant height (57.73 cm) and 50 % flowering (51.44 days) were the highest in the treatment S1. However, days to maturity, number of pods per plant and 100 grain weight did not show any significant differences to the various row spacing. The dry weight of weeds (7.93 gm. m-2) and number of seeds per pod (10.57) were found more in the treatment S3. However, more seed yield (1120 kg. ha-1) and biological yield (3240.11 kg. ha-1) were found in the treatment S1. To achieve more profitable yield of spring green gram, the crop should be sown at 30 cm x 10 cm spacing and followed by pre-emergence application of Pendimethalin at a rate of 1lit.ha-1 coupled with hand weeding at 30 DAS.
Key words: green gram, weed management, row spacing, yield.
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