Journal of
Soil Science and Environmental Management

  • Abbreviation: J. Soil Sci. Environ. Manage.
  • Language: English
  • ISSN: 2141-2391
  • DOI: 10.5897/JSSEM
  • Start Year: 2010
  • Published Articles: 311

Full Length Research Paper

Simulation of resource-conserving technologies on productivity, income and greenhouse gas GHG emission in rice-wheat system

Y. S. Saharawat1*, J. K. Ladha1, H. Pathak1, M. Gathala1, Neelam Chaudhary2, M. L. Jat2  
1International Rice Research Institute-India, NASC Complex, DPS Marg, Pusa Campus, New Delhi, India. 2International Maize and Wheat Improvement Center-India, NASC Complex, DPS Marg, Pusa Campus, New Delhi, India.
Email: [email protected]

  •  Accepted: 04 December 2011
  •  Published: 31 January 2012

Abstract

The Rice-wheat (RW) cropping system is one of the major agricultural production systems in four Indo-Gangetic Plains (IGP) countries: India, Pakistan, Bangladesh and Nepal of South Asia covering about 32% of the total rice area and 42% of the total wheat area. The excessive utilization of natural resource bases and changing climate are leading to the negative yield trend and plateauing of Rice-wheat (RW) system productivity. The conservation agriculture based efficient and environmental friendly alternative tillage and crop establishment practices have been adopted by the farmers on large scale. A few tools have been evolved to simulate the different tillage and crop establishment. In the present study, InfoRCT (Information on Use of Resource Conserving Technologies), a excel based model integrating biophysical, agronomic, and socioeconomic data to establish input-output relationships related to water, fertilizer, labor, and biocide uses; greenhouse gas (GHG) emissions; biocide residue in soil; and Nitrogen (N) fluxes in the rice-wheat system has been validated for farmer participatory practices. The assessment showed that double no-till system increased the farmer’s income, whereas raised-bed systems decreased it compared with the conventional system. The InfoRCT simulated the yield, water-use, net income and biocide residue fairly well. The model has potential to provide assessments of various cultural practices under different scenarios of soil, climate, and crop management on a regional scale.

 

Key words: Biocide residue index, global warming potential, greenhouse gas emission, nitrogen budget, resource conserving technologies, rice-wheat system; systems analysis.