Methane budget from paddy fields in India

Parashar, D. C.; Mitra, Abhijit; Gupta, Prabhat K.; Rai, J.; Sharma, Rahul; Singh, Nahar; Koul, S.; Ray, H. S.; Das, Subir K.; Parida, K. M.; Rao, S. Srinivasa; Kanungo, Slipa; Ramasami, T.; Nair, Balachandran Unni; Swamy, Mahadeswara; Singh, Gulab; Gupta, Santosh Kumar; Barua, A. K. S.; Pathak, Mohan; Iyer, C.S.P.; Gopalakrishnan, M.; Sane, P. V.; Singh, Sunil Kumar; Banerjee, Ruma; Sethunathan, N.; Adhya, T K; Rao, V. R.; Palit, P.; Saha, Ankit; Purkait, N. N.; Chaturvedi, G. S.; Sen, S. P.; Sen, Mausumi; Sarkar, Bipul; Banik, Avishek; Subbaraya, B. H.; Lal, Shyam; Venkatramani, S.; Lal, Girdhari; Chaudhary, Anand Kumar; Sinha, S. K.

doi:10.1016/s1352-2310(97)80981-8

Cited by 14 publications

(23 citation statements)

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“…Barometric pressure and water level inside the chamber were measured during each sampling for calculating air volume at standard temperature and pressure (STP). Box air volume at STP was measured according to the method described by Parashar et al (1996). Gas samples were drawn from the chambers using a 50 ml airtight syringe fitted with a three-way stop-cock and a fine needle that was inserted through a self-sealing rubber septum.…”

Section: Gas Sampling and Estimationmentioning

confidence: 99%

“…CH 4 and N 2 O standards obtained from National Physical Laboratory, New Delhi, India were used for calibrating CH 4 and N 2 O concentrations. CH 4 and N 2 O fluxes were calculated from the temporal increase in the gas concentration inside the box using the equation of Parashar et al (1996) and the average of morning and evening fluxes were considered as the flux value for the day.…”

Section: Gas Sampling and Estimationmentioning

confidence: 99%

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Plant physiological and soil characteristics associated with methane and nitrous oxide emission from rice paddy

Baruah

Gogoi

2010

Physiol Mol Biol Plants

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Methane (CH4) and nitrous oxide (N2O) are important greenhouse gases causing global warming and climate change. Efforts were made to analyze the CH4 and N2O flux in relation to plant and soil factors from rice (Oryza sativa L.) paddy. Ten popularly grown rice varieties namely Rashmisali, Bogajoha, Basmuthi, Lalkalamdani, Choimora (traditional varieties); Mahsuri, Moniram, Kushal, Gitesh and Profulla (high yielding varieties = HYV) were grown during monsoon season of July 2006. The CH4 and N2O emissions were measured the date of transplanting onwards at weekly interval along with soil and plant parameters. The seasonal integrated CH4 and N2O emission (Esif) from rice ranged from 8.13 g m(-2) to 13.00 g m(-2) and 121.63 mg N2O-N m(-2) to 189.46 mg N2O-N m(-2), respectively. Variety Gitesh emitted less N2O and CH4 amongst all the rice varieties. Both CH4 and N2O emission exhibited a significant positive correlation with leaf area, leaf number, tiller number and root dry weight. Soil organic carbon of the experimental field was associated with both CH4 and N2O emission whereas nitrate-N content of soil was associated with N2O emission. Methane emission showed significant positive correlations with soil temperature and crop photosynthetic rate. Traditional rice varieties with profuse vegetative growth recorded higher CH4 and N2O fluxes compared to HYVs. Gitesh and Kushal having low seasonal CH4 and N2O emission with higher yield potential can be recommended as low greenhouse gas emitting rice varieties.

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Section: Gas Sampling and Estimationmentioning

confidence: 99%

Section: Gas Sampling and Estimationmentioning

confidence: 99%

Plant physiological and soil characteristics associated with methane and nitrous oxide emission from rice paddy

Baruah

Gogoi

2010

Physiol Mol Biol Plants

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show abstract

“…Methane flux from rice field was recorded at 7-day intervals until 15 days after harvest using the static chamber technique described by Parashar et al (1996). Briefly, chambers 50 cm long, 30 cm wide and 70 cm tall made of 6-mm-thick clear acrylic sheet were used for gas sampling.…”

Section: Gas Sampling and Estimation Of Methane Emissionmentioning

confidence: 99%

Association between contrasting methane emissions of two rice (Oryza sativa L.) cultivars from the irrigated agroecosystem of northeast India and their growth and photosynthetic characteristics

Das

Baruah

2008

Acta Physiol Plant

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“…During recent years, several studies on CH 4 emission from Indian rice fields have been carried out by different researchers to study the effect of soil type, season, water regime, organic and inorganic amendments and cultivars [136][137][138][139][140][141][142][143][144]. Average methane flux varied significantly with different cultivars ranging between 0.65 and 1.12 mg m À 2 h À 1 [120].…”

Section: Ghg Emissions In Agriculture Sectormentioning

confidence: 99%