The experiment was conducted during 2018 in the greenhouse of the Horticulture Department of the Ministry of Production and Economic Resources, Kassala State, Kassala, to evaluate the effect of fertigation methods on hydraulic performance of drip irrigation system under greenhouse conditions. Drip irrigation system including fertigation units was installed. Four types of fertigators viz: ordinary closed tank, venturi, centrifugal pump and new method (simple way) were tested for efficiency and uniformity of drip irrigation system compared to drip irrigation without fertigation as standard method. Each type of fertigation was tested for 30 minutes. Treatments were arranged in a Randomized Complete Block Design (RCBD) with three replications. The results showed that the highest values of field emission uniformity and absolute emission uniformity were recorded under centrifugal pump, the new method compared to venturi and closed tank. The best values of uniformity coefficient and distribution uniformity were recorded under new method and centrifugal pump compared to venturi and closed tank. The highest value of application efficiency was recorded under new method while the lowest under closed tank.
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Khalifa et al. (2024) studied this question.
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