Calculation of consumptive use of water for trees seedlings using drip irrigation system

الملخص EN

The drip irrigation was installed to irrigate 130 seedlings of second year age was cultivated in the field with four kind of seedling (Olive, Ornament, Grape, Peanut).

The hydraulic performance of emitters was based on water flow along the pipe.

The study was focus to find the actual evapotranspiration (ETc) value by both program Cropwat and local climate condition compared with traditional application of water, to calculate reference evapotranspiration (ET0) for seedlings by depending on the meteorological data of the region.

Crop coefficient (Kc) for each plant used to determine ETc.

The results demonstrated that after the transformation of seedling from nursery to field the total fail seedling percent from all seedlings about 9%, where the success percentage recorded a high value about 91%.

Traditional water applied method showed 564.3 mm/season for each seedling irrigated, while the consumptive use Cropwat programs for Grape, Ornament and Peanut, Olive were (251.46, 335.28, 335.28,544.08) and for local climate condition to the same seedlings (230.31, 307.08, 307.08,498.99) mm/season for each plants seedling respectively, it is revealed that the amount of water application by traditional method was more than that founded by both programs, therefore it’s better to use the Cropwat and local climate condition program for water application