Energy Use Pattern and Paddy Yield in Assam (India)

摘要

Energy use pattern and paddy yield of 576 farms covering an area of 760 ha of Assam (India) were investigated. Total input energy form eight distinct sources viz., human, animal, diesel, chemical fertilizer, FYM, seed, plant protection chemical and machinery pertaining to the inputs of all the 576 farms were individually estimated. Four types of farm were identified based on the use of power sources and chemical fertilizer. Equations of best-fit curve were determined considering yield as dependent variable and total input energy as independent variable for all the four types of farms separately. The result of the analysis indicated that the use of chemical fertilizer and mechanical power resulted higher paddy yield at higher level of input energy. The best-fit curves also indicated that increase in energy resulted increase in yield up to certain points resulting a maxima and then yields started declining. This was observed for all four types of farms, however, with a variation of yield-energy values. The maximum yield (t/ha) and corresponding total input energy (GJ/ha) for the animal powered non-fertilizer (2.05, 4.78), animal powered fertilizer (3.44, 10.71), mechanical powered non-fertilizer (2.28, 5.03) and mechanical powered fertilizer (4.72, 9.72) farms were estimated from the points of maxima.