The combined effect of leaching water salinity and soil amendments on the soil chemical properties of El-Tiena plain [electronic resource].

Includes references.

This study was carried out to evaluate the individual and combined effect of teaching water salinity, gypsum and compost on the soil chemical properties and the content of available macro-nutrients in the salt affected soils of El-Tiena Plain region. Leaching experiment using columns with 60 em length and 8.5 em diameter was carried out where the soils of these columns were leached five times with water varied in their salinity. Also, with each level of leaching water salinity was treated with either of gypsum at rates of 0, 100 and 200% ofgypsum requirements (GR) or compost at rates of 0, 3 and 6%. Leaching~es were carried out at constant head of leaching water until the EC (dSm-1) values of filtration became constant. The results indicated that, soil pH, EC and the content of soluble cations and anions were decreased with the decreasing of salinity level of leaching water. This decrease was increased with the increase rates of either of gypsum or compost. The obtained data showed a wide variations among the obtained values of cation exchange capacity, the content of exchangeable cations and the values of exchangeable sodium percentages according to the studied treatments. Also, the soil amendments played a major role on the available nitrogen, phosphorus and potassium.

Summary in Arabic.

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