Effect of sulfur and composted manure on SO4-S,P and micronutrient availability in a calcareous saline–sodic soil |
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Authors: | Salar Rezapour |
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Institution: | Soil Science Department, Urmia University, Urmia, Iran |
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Abstract: | A factorial design with different levels of elemental S and cow manure was used to investigate the effects of S and manure on SO4-S, P and micronutrient availability in a calcareous saline–sodic soil. The results revealed that the recovery of SO4-S increased significantly (p≤0.05) in all treatments as elemental S increased, particularly when in combination with manure. The interactional effects of S° and manure application rates resulted in a decrease in soil pH of 0.1 to 0.9 units and increases in soil EC from 0.1 to 2.6 dS m?1 as result of an increase in the number of oxidisers and the oxidation rate of elemental S. Application of S° in combination with manure led to an increase in soil-available-P (0.6–40 mg kg?1), DTPA-Zn (0.2–3.9 mg kg?1) and DTPA-Fe (0.1–5.6 mg kg?1). |
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Keywords: | sulfur manure saline-sodic soil zinc iron phosphorus |
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