Leaching effects on some saline sodic gypsiferous soils in Saudi Arabia
Abdelhadi, Yousef M.; Hussain, Ghulam; Abdelhadi, Yousef M.; Soil and Water Department College of Agriculture and Food Sciences, King Faisal University; Hussain, Ghulam; Research and Experimental Station, King Faisal University
Журнал:
Arid Soil Research and Rehabilitation
Дата:
1987
Аннотация:
AbstractA field study was carried out to determine leaching effects on highly salt affected land for reclamation. Soil salinity was reduced from 75.50 to 16.75 ds m<sup>−1</sup>, sodium adsorption ratio (SAR) from 20.50 to 12.50 with 20 cm depth of water application. Soil salinity and SAR of soil reached safe limits by applying 60 cm depth of water in a three‐month period. The gypsum contents decreased significantly with increase in water application. Similarly, the soil pH also showed a significant increase with leaching. It may be due to the removal of excess salts and the buffering action of CaCO<sub>3</sub>. The study indicated that highly salt affected soils can be reclaimed with 60 cm depth of water for 0–30 cm surface soil and with 100 cm depth of water for 0–90 cm profile in a 3‐ to 5‐month period.
322.3Кб