Evaluation of sulphur-coated urea fertilizers in savannah soils. 2. Effects on soil pH and residual nitrogen

Nnadi, L.A and Abed, S.M. (1983) Evaluation of sulphur-coated urea fertilizers in savannah soils. 2. Effects on soil pH and residual nitrogen. Journal of Agricultural Science, 101 (1). pp. 125-129.

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Abstract

The residual effects of sulphur-coated urea fertilizers were evaluated by measuring the pH and mineral-N in the soil profile after 2 years of application of the fertilizers to soils in various ecological zones of the savannah of Nigeria. Changes of 0.2-0.3 pH units relative to the control (without applied N) were detected on the sandier soils at Kadawa and Mokwa but not on the heavier Samaru soils. There was little or no difference between sulphur-coated urea and calcium ammonium nitrate in their acidification effects. Residual nitrogen levels in plots that received sulphur-coated urea did not differ significantly from those of calcium ammonium nitrate, and were very low

Item Type: Article
Author Affiliation: Institute for Agricultural Research, Zaria, Nigeria
Subjects: Soil Science and Microbiology > Soil Sciences
Divisions: Other Crops
Depositing User: Ms K Syamalamba
Date Deposited: 14 Aug 2012 03:21
Last Modified: 14 Aug 2012 03:22
URI: http://eprints.icrisat.ac.in/id/eprint/7342

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