Sahrawat, K L and Mohanty, S K and Burford, J R (1987) Macronutrient Transformations And Budgeting In Soils. In: National Symposium on Macronutrients in Soils and Crops, 21-23 Dec 1987, Ludhiana, Punjab, India.
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Abstract
This review of selected papers discusses the transformations of N, P and K tbat affect the balanck sbeets of tbese nutrients for Indian soils, and it indi. cates the gaps in exiriing lnforrualion tbat need to be filled before accurate nutrient budgets can be prepared. More detailed lnformation is available for N than for P and K. IDgene ral, upland crops utilize fertilizer N more efficiently than wetland rice, where gaseous Imses of N may be substantial The appreciable proportion of fertilizer N tbat remains in ihe soil Is of low availability to subsequent crops. For all tbree nutrientr, more information Is needed on loores by leaching and erosion. Additionally, for N, many more nleasuremeats are needed of gaseous N loaner to provide a better underatanding of the extent of lowee. The currently available Information indicates that, for many soils, nutrient inputr do not match removals. Development of accurate budgets requires nutrient-balance experiments at a greater number of benchmark sites.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Divisions: | UNSPECIFIED |
| CRP: | UNSPECIFIED |
| Subjects: | Others > Soil Science |
| Depositing User: | Library ICRISAT |
| Date Deposited: | 04 Dec 2011 12:07 |
| Last Modified: | 04 Dec 2011 12:07 |
| URI: | http://oar.icrisat.org/id/eprint/4476 |
| Acknowledgement: | UNSPECIFIED |
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