National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
1College of Agriculture, Indira Gandhi Krishi Vishwavidyalaya, Raipur-492012, Chhattisgarh, India
2College of Agriculture, Rani Lakshmi Bai Central Agricultural University, Jhansi, Uttar Pradesh-284003, India
This study evaluates mustard responses to STCR-based fertilizer management, incorporating soil-test–based prescriptions and farmyard manure (FYM) across a range of treatments. The experimental framework aimed to quantify yield response and response ratios, nutrient-use efficiencies, and the economic implications of different fertilizer regimens. Among the treatments, the yield-target strategy of 22 q ha−1 (YT 22 q ha−1; T8) produced the highest grain yield, surpassing the conventional yield target of 6 t ha−1 (T5) and other regimens. Treatments based on STCR doses generally outperformed conventional inorganic schedules, with FYM-inclusive programs yielding greater grain production than sole chemical fertilization. The observed yield gains translated into superior gross return and net return for the yield-target STCR approach, although the benefit–cost ratio (B:C) varied with input costs, indicating a trade-off between maximizing yield or net benefit and achieving economic efficiency per unit input. The response ratio (grain yield per unit nutrient applied) varied among treatments, with T7 and T2 leading in efficiency despite high absolute yields for T8, suggesting that yield targets interact with base fertilization to shape nutrient-use efficiency. Nitrogen emerged as a primary driver of both yield and profitability, consistent with STCR principles that align nutrient supply with crop demand. Across nutrients (N, P, K), use efficiencies were higher under STCR prescriptions than under blanket applications, and FYM generally enhanced nutrient recovery, though its impact on per-unit efficiency depended on dose and interaction with mineral inputs.
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