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Miscellaneous
Prof. Sevak A
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कृषि स्रोतों से उत्सर्जित ग्रीनहाउस गैसों का शमन
Word agriculture contributes about 4% to total carbon dioxide emission, the most important green house gas. Factor such as soil texture, temperature, moisture, PH, available C and N influence Co2 emission from soil. The rate of Co evaluation is greater from clay-loam soil, which has highest organic C content than sandy soil, more Co2 emission occurs from a tilled than from an undisturbed soil (no till) .
Temperature has a marked effect on Co2 evolution from soil by influencing root and soil respiration and on CH4 by affecting anaerobic carbon mineralization and methanogenic activity.
Methane is about 20 times more effective than co2 as a heat trapping gas. Primary sources of methane from agriculture include animal digestion processes, wetland, paddy cultivation as well as manures storage and handling.
In ruminant animals methane is produce as a by- product of the digestion of feed in the rumen of cattle under anaerobic conditions. Methane is also produced during manure management when animal waste is shared in anaerobic conditions and left to decompose in the field. Anaerobic conditions develop in wetland rice fields, which limit the transport of oxygen into the soil, and the microbial activities render the water- saturated soil practically devoid of oxygen.
The biogenic methane results...
