Influence of Soybean (Glycine max. L) Sowing Methods and Seed Rate on Nitrogen Accumulation in Soil
N. Swapna, Firdouz Shahana, T. Prabhakar Reddy, M. Venkataiah
International Research Journal of Pure and Applied Chemistry · pp. 321–327 · Published 31 Dec 2020
10.9734/irjpac/2020/v21i2430370Abstract
The soybean (Glycine max L.) is a crop with a high demand for nitrogen (N). The root nodules that form in soybeans can fix atmospheric N effectively. To quantify available N in the soil a field experiment was conducted at Regional Sugarcane and Rice Research Station, Rudrur to evaluate the impact of varying sowing methods and seed rates on yield of soybean and available N in soil after harvest of crop. Planting methods and seed rates significantly influenced seed yield and available nitrogen in the soil. Broad Bed Furrow (BBF) method with seed rate 50 kg ha-1 recorded significantly higher number of pods per plant (105) and mean seed yield of 1891 kg ha-1 over flatbed with 50 kg seed rate ha-1 (1757 kg ha-1) respectively. Broad Bed and Furrow method of planting recorded a significantly higher live root nodules and available nitrogen in soil with 50 kg seed rate ha-1. Seed rate of 75 kg/ha recorded highest available N in soil on broad bed and furrow method. Broad Bed Furrow (BBF) method with seed rate 50 kg ha-1 recorded highest net returns (₹ 53,233 ha-1) and highest B:C ratio (2.72) over flat bed of planting.
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