Enhancement of Yield, Nitrogen use Efficiency, Production Economics of Fodder Oat through Selection of Appropriate Genotype and Nitrogen Fertilizer Application

Saikat Sarkar *

Department of Agronomy, PGCA, Dr. Rajendra Prasad Central Agricultural University, Pusa-848125 (Bihar), India.

Gangadhar Nanda

Department of Agronomy, PGCA, Dr. Rajendra Prasad Central Agricultural University, Pusa-848125 (Bihar), India.

Devendra Singh

Department of Agronomy, PGCA, Dr. Rajendra Prasad Central Agricultural University, Pusa-848125 (Bihar), India.

Sunil Kumar

Department of Agronomy, PGCA, Dr. Rajendra Prasad Central Agricultural University, Pusa-848125 (Bihar), India.

Santosh Kumar Singh

Department of Soil Science, PGCA, Dr. Rajendra Prasad Central Agricultural University, Pusa-848125 (Bihar), India.

Hrishikesh Nath

Department of Agronomy, PGCA, Dr. Rajendra Prasad Central Agricultural University, Pusa-848125 (Bihar), India.

*Author to whom correspondence should be addressed.


Abstract

Growing fodder oat (Avena sativa L.) genotype with high yielding potential with adequate nitrogen could enhance the fodder yield and quality to bridge the gap between demand and supply of green fodder. Therefore, an experiment was performed to evaluate the effect of different genotypes and nitrogen levels on yield, nitrogen use efficiency, production economics, and agro-meteorological parameters of fodder oat at Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar. Six oat genotypes, viz., Kent, JO-07-28, OS-403, OS-6, HFO-904 and HFO-906, were sown with 40, 80 and 120 kg of nitrogen per hectare. The experiment was set up using a split-plot design, with three replications of the genotypes in the main plots and N levels in sub-plots. Results revealed that genotype JO-07-28 was significantly superior to Kent (check) with respect to green fodder yield whereas both were comparable to each other with respect to dry matter yield, crude protein content and yield. Kent showed maximum N, P and K uptake and heat use efficiency, helio-thermal and photo-thermal unit efficiency. However, genotype JO-07-28 yielded the highest net returns (Rs. 27421/ha), B:C ratio (1.85), and economic efficiency (Rs. 271/ha/day). Among other nitrogen levels, application of 120 kg N/ha recorded the maximum yields of green fodder (371 q/ha) and dry matter (91 q/ha), crude protein content and yield, N uptake, net returns (Rs. 23096/ha), B:C ratio (1.71) and economic efficiency (Rs. 231/ha/day) and  heat use efficiency (7.60), helio-thermal and photo-thermal unit efficiency which were statistically equivalent to 80 kg N/ha. Genotype JO-07-28 and HFO-904 were the most N efficient genotype in terms of partial factor productivity of N fertilizer and nitrogen utilization efficiency, respectively. Enhancement in level of N application reduced the nitrogen use efficiency.

Keywords: Economic efficiency, fodder oat, heat use efficiency, nitrogen fertilization, nitrogen use efficiency


How to Cite

Sarkar , S., Nanda , G., Singh , D., Kumar , S., Singh , S. K., & Nath , H. (2024). Enhancement of Yield, Nitrogen use Efficiency, Production Economics of Fodder Oat through Selection of Appropriate Genotype and Nitrogen Fertilizer Application. International Journal of Environment and Climate Change, 14(2), 740–749. https://doi.org/10.9734/ijecc/2024/v14i23986

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