Studies on the efficacy of sources of phosphorus in relation to phosphorus availability in three coffee soils
Three incubation studies with soils of pH 6.2, 5.2 and 5.6 were carried out to study the efficacy of various sources of phosphorus under laboratory conditions, in relation to their availability. Nitrophosphate was found to be superior to other sources of phosphorus in maintaining availability of phosphorus in all the three soils. There was practically little release of available phosphorus from rock phosphate when the soil pH was more than 5.6. It was also seen that the level of available phosphorus after application of various sources of phosphorus depended on the initial level of available phosphorus indicating the need for higher levels of phosphorus application to soils low in available phosphorus
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| Main Authors: | , |
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| Format: | biblioteca |
| Published: |
1970
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| Subjects: | SUELO, FOSFORO, EFICACIA, FERTILIZANTES FOSFATADOS, EFECTOS DEL FOSFORO EN LOS SUELOS, FERTILIZACION, |
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