SYSTEM PRODUCTIVITY AND ENERGY BUDGETING OF RICE-BLACKGRAM CROPPING SYSTEM UNDER CONSERVATION AGRICULTURE TECHNOLOGIES IN HILLY ZONE OF KARNATAKA

G.M. KESHAVAMURTHY¹*, R. BASAVARAJAPPA², H.B. BABALAD^3
1Department of Agronomy, University of Agricultural Sciences, Dharwad, 580 005, Karnataka, India
²Department of Agronomy, University of Agricultural Sciences, Dharwad, 580 005, Karnataka, India
³Department of Agronomy, University of Agricultural Sciences, Dharwad, 580 005, Karnataka, India
* Corresponding Author : kmurthy.agr@gmail.com

Received : 02-07-2019     Accepted : 12-07-2019     Published : 15-07-2019
Volume : 11     Issue : 13       Pages : 8754 - 8757
Int J Agr Sci 11.13 (2019):8754-8757

Keywords : Conservation tillage, Crop management practices, Green and brown manuring, Rice equivalent yield and energetics
Academic Editor : Dr Prabhjot Kaur Gill
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to INSFIRE division Dept. of Science and Technology Govt. of India for providing of financial support to research. Authors are also thankful to Department of Agronomy, University of Agricultural Sciences, Dharwad, 580 005, Karnataka, India
Author Contribution : All authors equally contributed

The aim of this experiment was to determine the energy efficiency indices in the rice-blackgram cropping system under various conservation tillage and crop management practices for hilly zone of Karnataka during 2014-15 and 2015-16. Minimum tillage with BBF or no tillage with flat bed with crop residues retained on the surface combined with RPP (Recommended package of practices) + brown manuring of sunnhemp significantly improved crop growth and yield of rice and blackgram and increased system productivity to the tone of 36.25 and 30.94 percent compared to conventional tillage with inorganic nutrients and pest management. The higher energy output (1,52,364 and 1,43,838 MJ ha-1), energy use efficiency (10.03 and 9.72), energy productivity (0.689 and 0.667) and net energy (1,37,039 and 1,28,945 MJ ha-1) were recorded in minimum tillage with BBF or no tillage with residue retention on the surface as compared to rest of the tillage practices. Among the crop management practices, recommended package of practices + brown manuring of sunnhemp (CM1), integrated nutrient and pest management + brown manuring of sunnhemp (CM2) and organics (FYM 50 % +VC 50 %) equivalent 100 % RDN and biological pest management + green leaf manuring (Gliricidia) @ 5 t ha-1 (CM3) noticed higher output energy (9.60 to 17.91 %), energy use efficiency (11.09 to 20.74 %), energy productivity (9.46 to 20.83 %) and net energy (12.55 to 19.27 %) as compared to inorganic nutrient and pest management.

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