Studies on phosphorus fixation and release in coffee growing oxisols
A laboratory investigation was made to study the fixation and release of 32p labelled KH2PO4 in a coffee growing oxisol of Karnataka in presence of certain soil amendments at different incubation periods. The per cent recovery of applied P in 0.01M CaCl2 and Bray-1 extractants decreased with increased period of contact with soil. About 70 to 80 per cent of applied P could not be recovered from the soil by sequential extraction up to 21 days of incubation. Application of sodium citrate to soil gave higher recovery of applied P than CaCO3 and FYM by both the extractants
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| Main Authors: | , , |
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| Format: | biblioteca |
| Published: |
Ene
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| Subjects: | SUELOS, FERRALSOLES, FIJACION DE FOSFORO, ENMIENDAS DEL SUELO, DISPONIBILIDAD DE NUTRIENTES, |
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| Summary: | A laboratory investigation was made to study the fixation and release of 32p labelled KH2PO4 in a coffee growing oxisol of Karnataka in presence of certain soil amendments at different incubation periods. The per cent recovery of applied P in 0.01M CaCl2 and Bray-1 extractants decreased with increased period of contact with soil. About 70 to 80 per cent of applied P could not be recovered from the soil by sequential extraction up to 21 days of incubation. Application of sodium citrate to soil gave higher recovery of applied P than CaCO3 and FYM by both the extractants |
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