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Journal of the Indian Society of Soil Science
Year : 1985, Volume : 33, Issue : 2
First page : ( 317) Last page : ( 321)
Print ISSN : 0019-638X. Online ISSN : 0974-0228.

Relative Efficiency of Some Phosphatic Fertilizers on Crop Yield and Phosphorus Availability in Calcareous Soil

Prasad B., Prasad J., Prasad R., Sinha M.K.

Department of Soils, Rajendra Agricultural University, Pusa, Samastipur, Bihar, 848 125

Received:  May,  1982; Accepted:  June,  1985.

Abstract

Direct and residual effect of different phosphorus carriers in highly calcareous soil (32% CaCO3) indicated that all water soluble fertilizers were equally efficient and superior to nitrophosphate. The maximum yield response to applied P was recorded at a level of 60 kg Pa05/ha. A considerable amount of available P built up in the soil persisted adequately even after the harvest of second crop.

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Keywords

Phosphatic fertilizers, forms, availability, crop yield, direct and residual effect, calcareous soil.

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