Nitrogen use efficiency in rice (Oryza sativa L.) as affected by green manuring plant Dhaincha (Sesbania aculeata L.)
2000
Awan, I.U. | Jaskani, A.G. | Nadeem, M.A. (Gomal Univ., D.I. Khan (Pakistan). Dept. of Agronomy)
The present study was undertaken to see the possibilities of growing green manure crop in the wheat- rice rotation during the vacant period of about 10-12 weeks available between harvesting and transplanting of the two major crops and consequently see its effect on the yield of rice. Six different doses of nitrogen (sub-plots) i.e. Control, 50 kg, 75 kg, I00 kg, 125 kg and 150 kg ha-1 were applied to both the green manured plots and un-green manured plots (main plots). Application of N-fertilizer alongwith organic matter significantly increased the plant height at maturity, number of tillers plant-1, number of spikelets panicle-1, 1000-grain weight, paddy yield, and harvest index than control. The maximum paddy yield of 7.15 t ha-1 was produced by plot where I50 kg N ha-1 was applied. The control plot produced minimum yield of 4.63 t ha-1.
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