Green house gas fluxes from rainfed sorghum (Sorghum bicolour) and pigeonpea (Cajanus cajan) – Interactive effects of rainfall and temperature

Authors

  • J.V.N.S. PRASAD Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad-500 059, India
  • CH. SRINIVASA RAO Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad-500 059, India
  • K. RAVICHANDRA Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad-500 059, India
  • CH. NAGA JYOTHI Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad-500 059, India
  • M.B.B. PRASAD BABU Directorate of Rice Research, Rajendranagar, Hyderabad-500 030
  • V. RAVINDRA BABU Directorate of Rice Research, Rajendranagar, Hyderabad-500 030
  • B.M.K. RAJU Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad-500 059, India
  • B. BAPUJI RAO Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad-500 059, India
  • V.U.M. RAO1 Central Research Institute for Dryland Agriculture, Santoshnagar, Hyderabad-500 059, India
  • B. VENKATESWARLU Vasantrao Naik Marathwada Agricultural University, Parbhani-431 401
  • DEVASREE NAIK World Agroforestry Centre (ICRAF), New Delhi-110 012
  • V.P. SINGH World Agroforestry Centre (ICRAF), New Delhi-110 012

DOI:

https://doi.org/10.54386/jam.v17i1.970

Keywords:

Green house gas emissions, Indian rainfed agriculture, pigeonpea,, sorghum,, temperature

Abstract

Carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) are important biogenic green house gases (GHGSs) from agricultural sector contributing to global warming. Temperature and rainfall play an important role in GHGS fluxes and information on their role in rainfed crops and systems is very scanty. Field studies were conducted at Hyderabad, India during 2012 rainy season to quantify GHGSs fluxes from two important food crops grown widely in rainfed regions viz. sorghum and pigeonpea. Quantum of fluxes ranged from 26 - 85 mg CO2 - C m-2 h-1 in case of CO2 and 18 – 68 μg N2O-N m-2 h-1 in case of N2O at different stages of crop growth. Cumulative seasonal fluxes are 1.18 and 1.24 Mg CO2-C ha-1 and 0.78 and 0.94 kg N2O-N ha-1, in sorghum and pigeonpea, respectively. Ambient temperature and rainfall significantly influenced CO2 fluxes. CO2 fluxes increased with increase in temperature from 25.9 °C to 31 °C and fluxes were highest at 28.4 °C in pigeonpea and at 27.7 °C in sorghum. Quantum of CO2 fluxes were highest at grain filling stage in sorghum and grand growth period in pigeonpea. N2O fluxes increased with increase in temperature and moisture availability. These results provide evidence that rainfed crops in semi-arid regions contribute significant CO2 and N2O fluxes which are influenced by temperature and rainfall, thus warrant further studies.

Downloads

Published

01-06-2015

How to Cite

J.V.N.S. PRASAD, CH. SRINIVASA RAO, K. RAVICHANDRA, CH. NAGA JYOTHI, M.B.B. PRASAD BABU, V. RAVINDRA BABU, B.M.K. RAJU, B. BAPUJI RAO, V.U.M. RAO1, B. VENKATESWARLU, DEVASREE NAIK, & V.P. SINGH. (2015). Green house gas fluxes from rainfed sorghum (Sorghum bicolour) and pigeonpea (Cajanus cajan) – Interactive effects of rainfall and temperature. Journal of Agrometeorology, 17(1), 17–22. https://doi.org/10.54386/jam.v17i1.970

Issue

Vol. 17 No. 1 (2015): June

Section

Research Paper

License

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

This is a human-readable summary of (and not a substitute for) the license. Disclaimer.

You are free to:

Share — copy and redistribute the material in any medium or format

Adapt — remix, transform, and build upon the material

The licensor cannot revoke these freedoms as long as you follow the license terms.

    Under the following terms:

    Attribution — You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

    NonCommercial — You may not use the material for commercial purposes.

    ShareAlike — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.

    No additional restrictions — You may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.

    Notices:

    You do not have to comply with the license for elements of the material in the public domain or where your use is permitted by an applicable exception or limitation.

    No warranties are given. The license may not give you all of the permissions necessary for your intended use. For example, other rights such as publicity, privacy, or moral rights may limit how you use the material.

    Most read articles by the same author(s)

    << < 1 2 3 > >>