Pillai, K.G. and Devi, L.S. and Jagannath, M.K. and et al, . (1985) Relative Efficiency of Different Sources of Phosphorus on Cereal based Crop Sequences. Other. All India Coordinated Agronomic Research Project, Bangalore.
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Abstract
The results discussed above clearly indicate that Mussoorie rock phosphate could be an alternate source of P for most crops in acid soils. This was also true for lowland rice even in neutral to alkaline soils. It should be remembered that almost 30 percent of the total land area in the country is estimated to be having acid soils, of which those with pH less than 8.0 occupy nearly 20% of the cultivated area. Though the general consensus is in favor of using ground mineral phosphate in acid soils, the ground rock phosphate compare favorably with super phosphate for rice, wheat and maize grown in neutral to sightly alkaline soils. The presence of high percentage of iron neutral to slightly alkaline soils. The presence of high percentage of iron pyrite crystals which are found to be occluded in phosphate pellets in Mussoore rock phosphate would probably help the availability of phosphate in neutral to slightly alkalne oils. In general, the results show that in neutral to alkaline soils and for short duration crops sources with high water soluble P or a mixture of soluble and insoluble P are found superior, where as in acid soils and for intensive cropping sequences water soluble forms less important...
| Item Type: | Monograph (Other) |
|---|---|
| Uncontrolled Keywords: | Phosphorus, Mussoorie rock phosphate, Rice, Maize-wheat sequence, Fertilizer, RP3637 |
| Author Affiliation: | Project Coordinator (Agronomy) All India Coordinated Agronomic Research Project, University of Agricultural Sciences, GKVK, Bangalore |
| Subjects: | Plant Production Plant Protection |
| Divisions: | Maize Other Crops |
| Depositing User: | Ms Ishrath Durafsha |
| Date Deposited: | 24 Dec 2014 09:05 |
| Last Modified: | 24 Dec 2014 09:05 |
| URI: | http://eprints.icrisat.ac.in/id/eprint/13568 |
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