The impact of fertilizer on cucumber (Cucumis sativus L.) grown in greenhouse conditions

Cucumber (Cucumis sativus L.) is an important vegetable crop in the tropics and is widely consumed. It ranks fourth after tomato, cabbage, and onion in Asia. However, for cucumber to grow properly and yield well, it needs appropriate nutrient and water management, which is why fertilizer application is crucial. The primary objective of this study was to examine how different levels of fertilizer [CAN (CaCO3 + NH4NO3)] would affect the growth and yield potential of cucumber under greenhouse conditions. In this study, cucumber variety Ashely was used and different levels of fertilizer were applied: zero (T1), low (T2), medium (T3), and full strength (T4). The results showed that the fertilizer levels had a significant effect on the growth and yield of cucumber. Treatments T2, T3, and T4 had higher plant growth than the control (T1), while T4 had the highest number of flowers (32.33) followed by T2, and T1 had the lowest number of flowers. Moreover, T2 had the highest germination percentage (94.6%), followed by T4 (93.3%), and T3 (92.0%). Surprisingly, T2, T3, and T4 showed a notable increase in fruit length, fruit diameter, and dry weight. T2 showed the best performance in terms of crop growth, development, and yield. However, T4 was not recommended since it was not cost-effective to use high levels of fertilizer. The study also revealed that lower levels of fertilizer had a significant impact on various growth stages of cucumber. Although South Sudanese soils are fertile, there is a need to apply minimum doses of fertilizer to improve crop performance, depending on soil health. The results showed that a lower level of [CAN (CaCO3 + NH4NO3)] fertilizer and drip irrigation, especially for off-season production, had a positive effect on the growth and yield of cucumber obtained per unit area.

Author(s) Details:

Peter B. S. Gama,
Department of Agricultural Sciences, School of Natural Resources & Environmental Studies (SNRES), University of Juba, P.O. Box 82, Juba, South Sudan.

Annet Manua Moses,
International Committee of the Red Cross (ICRC), Hai Amarat, Ministry Road, Juba, South Sudan.

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