Abstract
Abstract Seedlings of date palm (Khlas cultivar) were grown in two soils with similar contents of CaCO3 and different clay contents. After addition of farmyard manure, elemental sulphur was added to both soils at rates of 0, 500, 1000, 2000, 5000, 10000, 20000 and 30000 μg S0 g−1. After five months, height, fresh and dry weight of plants were measured, and leaf contents of N, S, P and micronutrients were determined. Soil pH and contents of CaCO3, soluble salts and available P and micronutrients were determined. The results showed that the content of CaCO3 and pH values decreased with an increase in S0, and salinity was increased. This effect was more pronounced in soils containing less clay. Availability and uptake of P, Fe, Mn, and Zn were increased at high addition rates of S0. Growth of seedlings was reduced at S0 rates over 5000 μg g−1, possibly due to the salinity and imbalance between N and S.
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