Direct and residual effect of mussoorie rock phosphate on soybean glycine max cultivar bragg grown in sequence with wheat triticum aestivum cultivar sonalika in acid alfisol

Marwaha, B.C.

Indian Journal of Agricultural Sciences 56(2): 101-106

1986


ISSN/ISBN: 0019-5022
Accession: 005164469

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Abstract
A 4-year field study with 'Sonalika' wheat (Triticum aestivum Linn. emend. Fiori and Paol.) and 'Bragg' soybean [Glycine max (Linn.) Merr.] grown in rotation in a clay-loam acid alfisol showed Mussoorie rock phosphate to be an efficient P-carrier. Though soybean was more responsive, application of Mussoorie rock phosphate to wheat proved more remunerative, probably because the P requirement of soybean was satisfied with the residue of P applied to wheat. A single application of 294.8 or 393.0 kg P/ha through rock phosphate once in 3 or 4 years to the first crop of the rotation was found to be superior to frequent applications in smaller doses, when adjudged in terms of relative agronomic effectiveness and total P uptake.