Abstract
A field experiment has been carried out in an unheated plastic house belonging to the Department of Horticulture and Landscaping - College of Agriculture - University of Anbar in two seasons, autumn 2018 and spring 2019 to study the effect of water tension in the production of four hybrids of cucumbers for protected cultivation, which three of them are locally produced at the College of Agriculture - University of Anbar (H2, H3, H4) compared to a hybrid approved by the Iraqi Ministry of Agriculture (H1) for determining the best gynoecious hybrids (locally production) to withstand water stress by knowing the extent of its tolerance to water stress conditions that simulate the environment of Anbar Governorate. under three levels of water tension, calculated on the basis of depletion of 30% (I1), 50% (I2) and 70% (I3) of available water, the experiment has been carried out According to Randomized completed blocks design (R, C, B and D) with three replications. The surface drip irrigation system with GR type drippers has been adopted to irrigate the experiment ground. Irrigation has been scheduled for the two growing seasons in light of the depletion rates mentioned above and calculated on the basis of the weight method. The results showed the superiority of H3 in leafy area, dry weight and number of fruits which were 110.69 dm2, 88.84 g and 45.61 fruit of plant-1 for the autumn season as compared with 117.2 dm2, 96.41g and 67.34 fruit of plant-1 in the spring season, while H1 hybrid gave highest yield in the autumn season reached 3.488 kg plant-1 while H3 hybrid gave highest yield in the spring season reached 4.782 kg Plant-1. I1 treatment exceeded the other treatments of moisture depletion in all studied properties.
Main Subjects
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