The effect of different irrigation levels on the efficiency and quality of watermeon growed with drip irrigation method

This study was carried out to determine the ideal irrigation schedule for watermelon grown using the drip irrigation technology in semi-arid climate conditions in Midyat in 2021. The study was carried out in randomized blocks in a split plot design with 3 replications. Two different watering intervals (D1: 3 days; D2: 6 days) were the primary topics and four various irrigation levels were the subtopics in this study, which used a drip irrigation method. Different irrigation levels were established based on open water surface evaporation ratios of I1:50%, I2:75%, I3:100%, and I4:125% from Class A Pan. During the research season, D1 participants were provided water a total of 22 times (15 times based on class A pan), while D2 subjects obtained water a total of 14 times (7 times based on class A pan). The results of the experiment showed that irrigation levels, irrigation intervals, and their interactions all significantly affected watermelon yield. The highest yield was obtained from D1-I4 with 7 380 kg da-1. 721.9 mm of irrigation water was applied to this subject and the water consumption was 716.9 mm. While the amount of irrigation water applied has a significant impact on all watermelon quality criteria such as fruit weight (MA), fruit number (MS), fruit skin thickness (MKK), fruit width (ME), fruit length (MB), water-soluble dry matter amount (SSKM), fruit volume (MH), irrigation day interval significantly affected other quality criteria (0.01≤P or 0.05≤P) except MKK and SÇKM. In the trial subjects, the irrigation water usage efficiency (IWUE) ranged from 7.00 kg m-3 to 10.33 kg m-3, and the water usage efficiency (WUE) of the subjects ranged from 7.34 kg m-3 to 10.88 kg m-3.