INFLUENCE OF MOISTURE DEPLETION AND SURFACE DRIP IRRIGATION STYLE ON SOME SOIL HYDRAULIC PROPERTIES AND POTATO CROP

Abstract

This study aimed to determinate the impact of soil moisture depletion and surface drip irrigation style on some soil hydraulic properties such as infiltration, hydraulic conductivity, application efficiency, and water use efficiency for the potato crop. A field experiment was carried out in a site located northeast Ramadi, Iraq. The study consists of two factors: the first factor was two levels of moisture depletion percentages 25 and 50%, while the second factor includes two surface drip irrigation styles, which were traditional surface drip irrigation and partial drying surface drip irrigation. Consumptive use for potato plant reached 32.05 cm during the growing season. Results showed a significant influence on the treatments on application and water use efficiencies as well as on infiltration and soil hydraulic conductivity. The combination of the treatments partial drying drip irrigation style and 25% moisture depletion percentage can be recommended to achieve the best irrigation management for potato plant, which improves soil hydraulic properties and meets the best plant response in the same time