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<p>Fodder maize, recognized for high biomass production and palatability, exhibits significant responsiveness to nitrogen (N). Precise N-management is essential for producing high-quality fodder, enhancing N use efficiency, and minimizing environmental impacts. Given this, a field experiment was carried out in winter 2021 and 2022 with primary goal of optimizing N levels to enhance the quality, productivity, and efficiency of N use in fodder maize. The research uses a Randomized Complete Block Design with three replications and fourteen treatments that highlight N management utilizing Leaf Color Chart (LCC) and SPAD meter. Green forage (44.65 t/ha), dry matter (11.21 t/ha), crude protein yield (0.85 t/ha), total ash yield (1.15 t/ha), hemicellulose (32.6%), and organic matter yield (10.10 t/ha) were all significantly increased by applying 150&#xa0;kg N ha<sup>−1</sup> (40% basal (B) + 60% @ SPAD value 50). Economically, this treatment proved to be highly beneficial, recording the highest net monetary returns of Rs. 57,788 per hectare with a benefit–cost ratio of 2.91, indicated a substantial return on fodder production investment. On the other hand, the application of 100&#xa0;kg of N/ha (40% basal (B) + 60% @ LCC value of 5) showed the highest agronomic efficiency of N (217.2&#xa0;kg green fodder / kg N). Therefore, application of 150&#xa0;kg N/ha using SPAD value 50 was the most efficient rate in converting N input into green fodder yield, making it an effective strategy for N management for fodder maize production.</p>

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Optimizing yield, quality, and nitrogen use efficiency in fodder maize through precision N-management

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月21日

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  • B. G. Shekara,
  • N. M. Chikkarugi,
  • Manjanagouda S. Sannagoudar,
  • Dinesh Jinger,
  • Hanamant M. Halli,
  • Gaurendra Gupta,
  • Subhash Chand,
  • Venkatesh Paramesh,
  • G. A. Rajanna,
  • S. Aravindan,
  • H. S. Mahesha

摘要

Fodder maize, recognized for high biomass production and palatability, exhibits significant responsiveness to nitrogen (N). Precise N-management is essential for producing high-quality fodder, enhancing N use efficiency, and minimizing environmental impacts. Given this, a field experiment was carried out in winter 2021 and 2022 with primary goal of optimizing N levels to enhance the quality, productivity, and efficiency of N use in fodder maize. The research uses a Randomized Complete Block Design with three replications and fourteen treatments that highlight N management utilizing Leaf Color Chart (LCC) and SPAD meter. Green forage (44.65 t/ha), dry matter (11.21 t/ha), crude protein yield (0.85 t/ha), total ash yield (1.15 t/ha), hemicellulose (32.6%), and organic matter yield (10.10 t/ha) were all significantly increased by applying 150 kg N ha−1 (40% basal (B) + 60% @ SPAD value 50). Economically, this treatment proved to be highly beneficial, recording the highest net monetary returns of Rs. 57,788 per hectare with a benefit–cost ratio of 2.91, indicated a substantial return on fodder production investment. On the other hand, the application of 100 kg of N/ha (40% basal (B) + 60% @ LCC value of 5) showed the highest agronomic efficiency of N (217.2 kg green fodder / kg N). Therefore, application of 150 kg N/ha using SPAD value 50 was the most efficient rate in converting N input into green fodder yield, making it an effective strategy for N management for fodder maize production.