Journal of Environmental Biology

Energy use pattern of diversified cropping systems under different nutrient and crop residue management practices in Eastern Indo-Gangetic plain

M. Kumar¹*, S. Mitra², A. Bera³ and M.R. Naik⁴ 

¹Department of Agronomy, Dr. Rajendra Prasad Central Agricultural University, Samastipur-848 125, India

²All India Network project on Jute and allied fibres, ICAR-Central Research Institute for Jute and allied Fibre crops, Barrackpore-700 120, India

³Crop improvement Division, ICAR-Central Research Institute for Jute and allied Fibre crops, Barrackpore-700 120, India

⁴Crop production division, ICAR-Central Research Institute for Jute and allied Fibre crops, Barrackpore-700 120, India

*Corresponding Author Email : mukesh.agro@gmail.com

Received: 06.04.2020                                                                Revised: 21.07.2020                                                           Accepted: 14.12.2020

Abstract

Aim: Assessment of energy input output relationship, greenhouse gases emission and carbon footprint of diversified jute-rice cropping systems under different nutrients and crop residue management practices.

Methodology: The inventory was prepared for all inputs required for crop cultivation and outputs of crops in cropping systems. These inputs and outputs were converted into energy by multiplying with energy equivalent coefficient and CO₂ emission coefficient following standard procedure.

Results: Jute-rice-baby corn cropping system recorded significantly higher net energy (324 GJ ha^-1) and energy use efficiency (8.02). Among different nutrient and crop management (NCRM) practices, significantly higher energy output (336.9 GJ ha^-1) and net energy (291.4 GJ ha^-1) recorded 100% NPK with crop residue. The highest carbon footprint recorded with rice-rice (0.44 kg COe kg^-1 economic yield) and the lowestwith jute-rice-pea (0.29 kg COe kg^-1 economic yield) cropping system. Among different NCRM practices, higher carbon footprint was (0.38 kg COe kg^-1 economic yield) recorded with 100% NPK with crop residue.      

Interpretation: The energy efficient and low input required cropping systems which include legume crops like garden pea and mungbean should be considered for cultivation for diversifying the existing rice-rice cropping system in Eastern India.

Key words: Carbon footprint, Crop residue, Energy, Greenhouse gases, Jute, Rice

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