Methane emission from rice fields in relation to management of irrigation water.
J Environ Biol
;
2011 Mar; 32(2): 169-172
Artigo
em Inglês
| IMSEAR
| ID: sea-146560
ABSTRACT
A field experiment was conducted for two years to find out best water management practice to mitigate methane emission from the rice-fields. Continuously flooded conditions yielded two major flushes of methane emission and on an average resulted in relatively higher rate of methane emission (2.20 and 1.30 mg m-2 hr-1, respectively in 2005 and 2006) during the kharif season. The methane flux was reduced to half (1.02 and 0.47 mg m-2 hr-1, respectively in 2005 and 2006) when rice fields were irrigated 2-3 days after infiltration of flood water into the soil. Irrigating the field at 0.15 bar matric potential reduced seasonal methane flux by 60% (0.99 and 0.41 mg m-2 hr-1, respectively in 2005 and 2006) as compared to completely flooded conditions, without any decline in grain yield (60 q ha-1).
Texto completo:
DisponíveL
Índice:
IMSEAR (Sudeste Asiático)
Idioma:
Inglês
Revista:
J Environ Biol
Ano de publicação:
2011
Tipo de documento:
Artigo
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