Akademik Veri Yönetim Sistemi
Paddy and Water Environment, cilt.23, sa.3, ss.373-388, 2025 (SCI-Expanded)
In this study, the effects of intermittent and deficit irrigation applications in subsurface drip irrigation system on the yield and some development parameters of black cumin (Nigella sativa L.) plant were investigated. Four irrigation water levels and three interval treatments were applied in the study. According to the results obtained in the study, the effect of intermittent irrigation practices was found to be statistically significant on yield, plant weight, number of branches, and average capsule diameter parameters of black cumin. The lowest and highest black cumin yields were obtained in irrigation treatments S0 and S1 with 566.0 and 18,883.4 kg ha−1, respectively. When evaluated according to intermittent applications, it was seen that seed yield increased as the water cut time increased. Accordingly, the average yield values in F0 (continuous irrigation), F1 (the treatment where water is applied once interrupted), and F2 (the treatment where water is applied twice interrupted) treatments were obtained as 1163.5, 1282.5, and 1204.8 kg ha−1, respectively. While the interaction of irrigation level and interval number was found to be significant only in the average capsule diameter, the lowest and highest capsule diameters were obtained from treatments S0F2 and S1F1 with 8.9 and 12.8 mm, respectively. The two-year average lowest and highest plant water consumption values were obtained from treatments S0 and S1F2 with 253.7 and 418.6 mm, respectively. As a result, it was revealed that increasing the on–off period in intermittent irrigation applications in clayey soils may have positive effects on plant development and productivity.