Economics and Energetic Efficiency of Puddled Transplanted Rice (Oryza sativa L.) as Influenced by Residue and Nitrogen Management Options

Author: Priyanka Nayak, Bama Shankar Rath, Rabindra Kumar Paikaray, Bijay Kumar Mohapatra, Sanat Kumar Dwibedi, Sabyasachi Sahoo and Shivasankar Acharya

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Abstract

A field experiment was conducted during kharif seasons of 2020 and 2021 at Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India, to identify economic and energy-efficient residue and nitrogen management technology options with satisfactory productivity and profitability in transplanted rice, which was carried out in a split plot design, having six main plot treatments, consisting of rice residue management options viz., rice residue removal, in-situ burning of rice residues, in-situ incorporation of rice residues, in-situ incorporation of rice residues + 20 kg N ha-1 as starter, in-situ incorporation of rice residues + 20 kg N ha-1 + 20 kg P2O5 ha-1 as starter and in-situ incorporation of rice residues + waste decomposer; and four sub-plot treatments consisting soil test-based N, leaf colour chart based N, chlorophyll meter based N and integrated nitrogen management based N (75% N through inorganic + 25% N through FYM).The results of the experiment revealed the lowest input energy consumption with rice residue removal and LCC based N application resulted in the lowest input energy. With respect to output energy, the highest output energy was recorded with in-situ incorporation of rice residues along with starter application of N and P2O5, differing significantly with all other residue management options. Among the nitrogen management options, INM approach resulted in the highest output energy, differing significantly with all other N management options. The highest net energy return andenergy use efficiencywas recorded with in-situ incorporation of rice residues along with starter application of N and P2O5 and INM approach, differing significantly with all other residue management treatments. The lowest specific energy and highest energy productivity was observed with in-situ incorporation of rice residues along with waste decomposer, whereas, among nitrogen management options, INM approachand LCC based nitrogen management recorded the lowest specific energy and highest energy productivity, respectively. Among residue management options, maximum energy profitability was recorded with with in-situ incorporation of rice residues along with N as starter and LCC based nitrogen management. The highest net returns and B:C ratio was estimated with in-situ incorporation of rice residues along with 20 kg N ha-1 and 20 kg P2O5ha-1 and INM approach of N management. Thus, in-situ incorporation of rice residues along with starter application of N and P2O5 along with INM involving 75% inorganic and 25% organic can be practised for encashing highest net energy, energy use efficiency and economical return from transplanted rice.

Keywords

Residue incorporation, Nitrogen management, Energy efficiency, Economics, Transplanted rice

Conclusion

In-situ incorporation of rice residues along with starter application of N and P2O5 and integrated nitrogen management involving 75% inorganic and 25% organic can be practised for encashing highest net energy, energy use efficiency and economical return from transplanted rice.

References

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How to cite this article

Priyanka Nayak, Bama Shankar Rath, Rabindra Kumar Paikaray, Bijay Kumar Mohapatra, Sanat Kumar Dwibedi, Sabyasachi Sahoo and Shivasankar Acharya (2023). Economics and Energetic Efficiency of Puddled Transplanted Rice (Oryza sativa L.) as Influenced by Residue and Nitrogen Management Options. Biological Forum – An International Journal, 15(1): 720-727.