Effect of Drip Irrigation Intervals and Fertigation Frequency on Yield and Yield Components of Cucumber under Greenhouse Conditions

The experiment was conducted in a cooled plastic tunnel greenhouse during March-August of 2022 and 2023 to study the effect of drip irrigation intervals and fertigation frequency on yield and yield components of cucumber under greenhouse conditions at Kassala State, Sudan. Seedlings of the most popular cucumber hybrid (Fatin) were planted on 40cm and 50 cm inter and intra-row spacing, respectively. The experiment was composed of two factors; irrigation intervals (every day, every 2 days and every 3 days) and fertigation frequencies applied at (one dose per week, two doses per week and 3 doses per week). The results showed that drip irrigation every day had recorded highest yield and yield components in both seasons. Maximum yields of cucumber were recorded with fertigation at three dose/week compared to fertigation at one dose/week in both seasons. Moreover, the highest values of yield, yield components, water productivity, economic water productivity and partial factor productivity of nitrogen were obtained under drip irrigation every day with fertigation at 3 dose/week on both seasons.