Effect of rice variety on methane emission from Louisiana rice

• Published in: Agriculture, ecosystems & environment Vol. 54; no. 1; pp. 109 - 114
• Main Authors: Lindau, C.W., Bollich, P.K., DeLaune, R.D.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-06-1995; Elsevier Science
• Subjects: Agricultural and forest climatology and meteorology. Irrigation. Drainage; Agricultural and forest meteorology; Agronomy. Soil science and plant productions; AIR POLLUTION; Applied sciences; Atmospheric pollution; Biological and medical sciences; Climatology, meteorology; Climatology. Bioclimatology. Climate change; Dispersed sources and other; Earth, ocean, space; Exact sciences and technology; External geophysics; Fundamental and applied biological sciences. Psychology; General agronomy. Plant production; Generalities. Techniques. Climatology. Meteorology. Climatic models of plant production; Greenhouse gas; METANO; Meteorology; METHANE; Mitigation; ORYZA SATIVA; Pollution; POLLUTION ATMOSPHERIQUE; Pollution sources. Measurement results; POLUCION DEL AIRE; VARIEDADES; VARIETE; VARIETIES; Louisiana; United States; North America; America; USA, Louisiana; Methane; Mitigation; Oryza sativa; Greenhouse gas; Production system; Subtropical zone; Monocotyledones; Greenhouse effect; Gas emission; Wet-rice cultivation; Growing season; Semidwarf type; Cereal crop; Agroecosystem; Bioclimatology; Gramineae; Atmosphere; Angiospermae; Air pollution; Ratoon cropping; Spermatophyta; Paddy field; Intraspecific comparison; Plant height; Anthropogenic factor; Cultivar
• ISSN: 0167-8809; 1873-2305
• DOI: 10.1016/0167-8809(95)00587-I

A field experiment was conducted to determine the effect local cultivars of
Oryza sativa L. (rice) had on methane evolution from flooded plots. Semidwarf and tall varieties were drill-seeded into a Crowley silt loam (Typic Albaqualf) and methane fluxes were measured twice a week over the first and ratoon cropping seasons. Semidwarf varieties evolved significantly less methane over both growing seasons. Over the main cropping season, semidwarfs emitted an average 185 kg CH
4 ha
−1 to the atmosphere compared with 300 kg CH
4 ha
−1 for the tall varieties. During the ratoon sampling season, semidwarf and tall varieties evolved 540 and 830 kg CH
4 ha
−1, respectively. Compared with tall cultivars, semidwarfs evolved 36% less methane over both seasons.