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Journal of the Indian Society of Soil Science
Year : 1992, Volume : 40, Issue : 1
First page : ( 76) Last page : ( 81)
Print ISSN : 0019-638X.

Contribution of Different Green Manures to P Nutrition of Rice

Hundal H.S., Dhillon N.S., Dev G.

Department of Soils, Punjab Agricultural University, Ludhiana, Punjab, 141004.

Received:  November,  1989; Accepted:  October,  1991.


Field experiments conducted on contribution of green manures to P nutrition of rice showed that fertilizer P addition increased dry matter production and P uptake by green manures. Sunnhemp produced the highest amount of dry matter followed by cowpea and dhaincha. Grain yield and P uptake by rice were the highest in cowpea (Vigna unguiculata) manured plots followed by dhaincha (Sesbania aculeata) and sunnhemp (Crotolaria juncea). Both green manuring and P addition moved the P solubility towards OCP but in fallow plots receiving no fertilizer P, soil phosphate solubility moved towards β-TCP showing decline in P availability under non - P fertilized fallow plots.



Green manures, P nutrition, rice.


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