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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10064

Title: Loss of Nitrogen from Ammoniacal Fertilizers Incubated under Different Soil and Termperature Conditions.
Authors: A. S. Al-Mashhady
Issue Date: 1983
Publisher: Commun. in Soil Sci.
Abstract: Ammonium sulfate and urea were added to three soils of widely different composition. After incubation for 28 days at 20o C, from 13 to 89% of the N from ammonium sulfate, and 8 to 71% of the N as urea were not recovered, and at 40oC, 44 to 95% of the N as ammonium sulfate, and 33 to 81% of the N as urea was not recovered as either ammonium-N or nitrate-N. Significantly more N was lost from a soil containing 3% calcium carbonate at pH 8.4 as compared to the two other soils containing 25 and 35% calcium carbonate, which have pH's of 7.7 and 7.5, respectively. An incubation temperature of 40oC appeared quite unfavourable for nitrification.
URI: http://hdl.handle.net/123456789/10064
Appears in Collections:College of Foods And Agricultural Science

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