A laboratory study of the effect of sulfur application on ca and mg concentration soluble in soil during incubation periods

الملخص EN

The effect of sulfur application on the water soluble Ca and Mg during incubation periods was studied.

Different levels of pure dry sulfur (DS) and 10% moist sulfur (MS) in the range of (200, 400, and 600 mgKg-1) and (100, 200, 300 mgKg-1) for Ca and Mg study respectively, were applied to study their effects on the concentrations of Ca and Mg in soil.

Dry sulfur application showed a maximum content of (75 mg Kg-1 Ca) in the soil at a period of (60 days) and minimum content of (23 mgKg-1 Ca) during (15 days) period.

As dry sulfur level increased, Ca concen- tration reached a maximum value of (90 mgKg-1) within the same incubation period, while moist sulfur application showed a maximum soluble Ca content (90 mg Kg-1) at a period of (60 days) after which a continuous declined in content was noticed.

Application of dry and moist sulfur of above mentioned levels on the soil samples during periods showed a fluctuated effect on the concentration of Mg in the soil, where it reached a maximum value of (35 mg Kg-1) at a period of (75 days) after which a constant behavior was noticed along the addition of different sulfur levels.

Calcium content showed some increment during 60 days, this means that a distin- guishable effect was shown on the availability of soluble Ca and Mg upon addition of both type of sulfur (DS and MS) during incubation period.

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