Seasonal emissions of methane and nitrous oxide from rice-wheat cropping system during 2002 and 2003

Vandana Gupta, Pratul Sharma, Vaishali Pradhan, S. Bhat, C. Sharma, P. Johri, Krishan Kumar, Prabhat K. Gupta

Research output: Contribution to journalArticle

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Abstract

Methane (CH4) and nitrous oxide (N2O) are important atmospheric greenhouse gases (GHGs) and rice-wheat ecosystem has been identified as one of the important anthropogenic sources of GHGs in agriculture sector. The water management in a given rice-wheat ecosystem plays a crucial role in its GHGs emission. It has been observed that the water regime in irrigated rice fields with sandy loam soils becomes intermittently flooded, due to high water percolation, which has a direct bearing on CH4 emissions. Wheat crop on the other hand does not need water flooding; hence N2O becomes important due to oxic environment. Intermittently flooded water regimes were simulated at NPL experimental fields to estimate the seasonal emissions of CH4 and N2O from rice-wheat cropping system during 2002-2003. The CH4 and N2O flux from wheat ecosystem was in the range of - 0.36-1.06 mg m-2 h-1 and - 0.10-1.22 mg m-2 h-1, respectively. The CH4 and N2O emission from rice cultivation was in the range of - 0.65-1.25 mg m-2 h-1 and - 0.32-0.43 mg m-2 h-1, respectively, from irrigated intermittently flooded (IR-IF) multiple aeration (MA) ecosystem. The CH4 and N2O seasonal integrated flux (Esif) from wheat cultivation are 1.02 ± 0.26 and 0.50 ± 0.12 gm-2, respectively, and from rice cultivation for IR-IF-MA ecosystem 0.52 ± 0.36 and 0.28 ± 0.20 gm-2, respectively. The CH4 emissions were significantly low from IR-IF-MA rice ecosystem and were surprisingly higher comparatively, from the wheat crop. It may be because of frequent rainfall events and high soil temperature in wheat cropping season.

Original languageEnglish
Pages (from-to)582-585
Number of pages4
JournalIndian Journal of Radio and Space Physics
Volume36
Issue number6
Publication statusPublished - 01-12-2007

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wheat
nitrous oxides
rice
nitrous oxide
cropping practice
ecosystems
methane
oxides
aeration
ecosystem
greenhouses
greenhouse gas
crops
water
soils
gases
water management
crop
agriculture
atmospheric gas

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)
  • Earth and Planetary Sciences (miscellaneous)

Cite this

Gupta, V., Sharma, P., Pradhan, V., Bhat, S., Sharma, C., Johri, P., ... Gupta, P. K. (2007). Seasonal emissions of methane and nitrous oxide from rice-wheat cropping system during 2002 and 2003. Indian Journal of Radio and Space Physics, 36(6), 582-585.
Gupta, Vandana ; Sharma, Pratul ; Pradhan, Vaishali ; Bhat, S. ; Sharma, C. ; Johri, P. ; Kumar, Krishan ; Gupta, Prabhat K. / Seasonal emissions of methane and nitrous oxide from rice-wheat cropping system during 2002 and 2003. In: Indian Journal of Radio and Space Physics. 2007 ; Vol. 36, No. 6. pp. 582-585.
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abstract = "Methane (CH4) and nitrous oxide (N2O) are important atmospheric greenhouse gases (GHGs) and rice-wheat ecosystem has been identified as one of the important anthropogenic sources of GHGs in agriculture sector. The water management in a given rice-wheat ecosystem plays a crucial role in its GHGs emission. It has been observed that the water regime in irrigated rice fields with sandy loam soils becomes intermittently flooded, due to high water percolation, which has a direct bearing on CH4 emissions. Wheat crop on the other hand does not need water flooding; hence N2O becomes important due to oxic environment. Intermittently flooded water regimes were simulated at NPL experimental fields to estimate the seasonal emissions of CH4 and N2O from rice-wheat cropping system during 2002-2003. The CH4 and N2O flux from wheat ecosystem was in the range of - 0.36-1.06 mg m-2 h-1 and - 0.10-1.22 mg m-2 h-1, respectively. The CH4 and N2O emission from rice cultivation was in the range of - 0.65-1.25 mg m-2 h-1 and - 0.32-0.43 mg m-2 h-1, respectively, from irrigated intermittently flooded (IR-IF) multiple aeration (MA) ecosystem. The CH4 and N2O seasonal integrated flux (Esif) from wheat cultivation are 1.02 ± 0.26 and 0.50 ± 0.12 gm-2, respectively, and from rice cultivation for IR-IF-MA ecosystem 0.52 ± 0.36 and 0.28 ± 0.20 gm-2, respectively. The CH4 emissions were significantly low from IR-IF-MA rice ecosystem and were surprisingly higher comparatively, from the wheat crop. It may be because of frequent rainfall events and high soil temperature in wheat cropping season.",
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Gupta, V, Sharma, P, Pradhan, V, Bhat, S, Sharma, C, Johri, P, Kumar, K & Gupta, PK 2007, 'Seasonal emissions of methane and nitrous oxide from rice-wheat cropping system during 2002 and 2003', Indian Journal of Radio and Space Physics, vol. 36, no. 6, pp. 582-585.

Seasonal emissions of methane and nitrous oxide from rice-wheat cropping system during 2002 and 2003. / Gupta, Vandana; Sharma, Pratul; Pradhan, Vaishali; Bhat, S.; Sharma, C.; Johri, P.; Kumar, Krishan; Gupta, Prabhat K.

In: Indian Journal of Radio and Space Physics, Vol. 36, No. 6, 01.12.2007, p. 582-585.

Research output: Contribution to journalArticle

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T1 - Seasonal emissions of methane and nitrous oxide from rice-wheat cropping system during 2002 and 2003

AU - Gupta, Vandana

AU - Sharma, Pratul

AU - Pradhan, Vaishali

AU - Bhat, S.

AU - Sharma, C.

AU - Johri, P.

AU - Kumar, Krishan

AU - Gupta, Prabhat K.

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N2 - Methane (CH4) and nitrous oxide (N2O) are important atmospheric greenhouse gases (GHGs) and rice-wheat ecosystem has been identified as one of the important anthropogenic sources of GHGs in agriculture sector. The water management in a given rice-wheat ecosystem plays a crucial role in its GHGs emission. It has been observed that the water regime in irrigated rice fields with sandy loam soils becomes intermittently flooded, due to high water percolation, which has a direct bearing on CH4 emissions. Wheat crop on the other hand does not need water flooding; hence N2O becomes important due to oxic environment. Intermittently flooded water regimes were simulated at NPL experimental fields to estimate the seasonal emissions of CH4 and N2O from rice-wheat cropping system during 2002-2003. The CH4 and N2O flux from wheat ecosystem was in the range of - 0.36-1.06 mg m-2 h-1 and - 0.10-1.22 mg m-2 h-1, respectively. The CH4 and N2O emission from rice cultivation was in the range of - 0.65-1.25 mg m-2 h-1 and - 0.32-0.43 mg m-2 h-1, respectively, from irrigated intermittently flooded (IR-IF) multiple aeration (MA) ecosystem. The CH4 and N2O seasonal integrated flux (Esif) from wheat cultivation are 1.02 ± 0.26 and 0.50 ± 0.12 gm-2, respectively, and from rice cultivation for IR-IF-MA ecosystem 0.52 ± 0.36 and 0.28 ± 0.20 gm-2, respectively. The CH4 emissions were significantly low from IR-IF-MA rice ecosystem and were surprisingly higher comparatively, from the wheat crop. It may be because of frequent rainfall events and high soil temperature in wheat cropping season.

AB - Methane (CH4) and nitrous oxide (N2O) are important atmospheric greenhouse gases (GHGs) and rice-wheat ecosystem has been identified as one of the important anthropogenic sources of GHGs in agriculture sector. The water management in a given rice-wheat ecosystem plays a crucial role in its GHGs emission. It has been observed that the water regime in irrigated rice fields with sandy loam soils becomes intermittently flooded, due to high water percolation, which has a direct bearing on CH4 emissions. Wheat crop on the other hand does not need water flooding; hence N2O becomes important due to oxic environment. Intermittently flooded water regimes were simulated at NPL experimental fields to estimate the seasonal emissions of CH4 and N2O from rice-wheat cropping system during 2002-2003. The CH4 and N2O flux from wheat ecosystem was in the range of - 0.36-1.06 mg m-2 h-1 and - 0.10-1.22 mg m-2 h-1, respectively. The CH4 and N2O emission from rice cultivation was in the range of - 0.65-1.25 mg m-2 h-1 and - 0.32-0.43 mg m-2 h-1, respectively, from irrigated intermittently flooded (IR-IF) multiple aeration (MA) ecosystem. The CH4 and N2O seasonal integrated flux (Esif) from wheat cultivation are 1.02 ± 0.26 and 0.50 ± 0.12 gm-2, respectively, and from rice cultivation for IR-IF-MA ecosystem 0.52 ± 0.36 and 0.28 ± 0.20 gm-2, respectively. The CH4 emissions were significantly low from IR-IF-MA rice ecosystem and were surprisingly higher comparatively, from the wheat crop. It may be because of frequent rainfall events and high soil temperature in wheat cropping season.

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