Vol. 6, Issue 5 (2018)
Factor productivity, nitrogen use efficiency and economics of maize under different precision nitrogen management practices
Author(s): Prakasha G, Mudalagiriyappa, Ramachandrappa BK, Nagaraju, Hanumanthappa DC and Sathish A
Abstract: Field experiment was conducted at Zonal Agricultural Research Station, UAS, GKVK, Bengaluru to assess the factor productivity, nitrogen use efficiency and economics of maize under different precision nitrogen management practices with twelve treatments and replicated thrice using RCBD during kharif 2016. The results revealed that among different precision nitrogen management practices, significantly higher partial factor productivity (92.36 kg kg-1) was recorded in nitrogen management through SPAD-40, N25. Recovery efficiency (97.27 %), agronomic efficiency (49.61 kg kg-1) and physiological efficiency (56.90 kg kg-1) were obtained in nitrogen management through Green Seeker as compared to recommended dose of nitrogen as per package of practices and absolute control. Higher gross returns and net returns (₹ 1,91 650 ha-1 and ₹ 1,38,100 ha-1, respectively) were noticed in application of NPK fertilizers through STCR method for target yield of 11 t ha-1 but higher B: C ratio (3.60) was registered in nitrogen management through Green Seeker as compared to recommended dose of nitrogen as per package of practices and absolute control.
Pages: 869-873 | 682 Views 185 Downloads
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How to cite this article:
Prakasha G, Mudalagiriyappa, Ramachandrappa BK, Nagaraju, Hanumanthappa DC, Sathish A. Factor productivity, nitrogen use efficiency and economics of maize under different precision nitrogen management practices. Int J Chem Stud 2018;6(5):869-873.
