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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/10045

Title: Effect of Elemental Sulphur on Chemical Changes and Nutrient Availability in Calcareous Soils
Authors: A. S. Modaihsh
W. A. Al-Mustafa
A. I. Metawally
Issue Date: 1989
Abstract: Elemental sulphur was added to three calcareous soils varying in texture, CaCO3 content, native phosphorus and micronutrient content at a rate of 0.5, 1.5 , and 3.0% (w/v). The experiment carried in soil columns which were intrmittentantly leached and incubated at 30C for 3, 6, 9, and 18 weeks. Sulphur applied at a rate of 0.5% significantly decreased the pH and increased the EC and the soluble sulphate content in all three soils and their leachates with slight differences among soils. Sulphur application generally increased 0.5M NaHCO3, extractable P and DTPA extractable Mn, slightly increased DTPA extractable Fe and Cu but had no significant effect on DTPA extractable Zn. The decrease in soil pH and the increase in DTPA extractable P, Mn Fe, and Cu upon S-addition were higher with lower CaCO3 content, lower CaCO3/clay ratio and with higher extractable content of these nutrients. Most chemical changes occurred at rate of 0.5% sulphur within 9 weeks of incubation and were largely confined to the soil surface where sulphur was mixed with soil. DTPA extractable Fe and Cu, however, were affected only at higher rates of S-application.
URI: http://hdl.handle.net/123456789/10045
Appears in Collections:College of Foods And Agricultural Science

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