This experiment was conducted for three farming systems, four levels mechanization and under three crop rotations. The mechanization level had significant effect on yield, human energy, indirect energy, and total energy and crop rotation had significant effect on indirect energy and total energy for paddy crop. The significant effect of both mechanization level and crop rotation were marked on yield, human energy, indirect energy and total energy for groundnut and mung crop. The highest yield of 26.25 q/ha was obtained under T3R2 treatment for paddy crop. The T3R3 treatment showed the highest yield of 13.78 q/ha and 7.05 q/ha of groundnut and mung crop respectively.
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