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Yield, water use efficiency and nutritional water productivity in response to planting density for Cucumis myriocarpus leafy vegetables under drip irrigation 


Citation :- Yield, water use efficiency and nutritional water productivity in response to planting density for Cucumis myriocarpus leafy vegetables under drip irrigation. Res. Crop. 26: 668-674
TSEKE PONTSHO EDMUND tsekepe@gmail.com
Address : Department of Plant Production, Soil Science and Agricultural Engineering, University of Limpopo, Private Bag X1106, Sovenga 0727, South Africa
Submitted Date : 28-07-2025
Accepted Date : 11-12-2025

Abstract

The null hypothesis suggested that the planting density/hole of drip irrigation would not have effects on the yield, water use efficiency (WUE), and nutritional water productivity (NWP) of wild cucumber (Cucumis myriocarpus Naude) under field conditions. The experiment was initiated during autumn (February-April) 2021 and validated in 2022. Nine treatments, namely, 1, 2, 3, 4, 5, 6, 7, 8, and 9 plants per hole drip irrigation (HDI), were arranged in a randomized complete block design, with 16 replications. Collected data included yield, evapotranspiration (Eta), WUE, and NWP of selected mineral elements (Ca, K, Mg, P, Fe, Na, and Zn). Planting density/HDI had no significant (P ≤ 0.05) effects on the Evapotranspiration (Eta) of C. myriocarpus leafy vegetable. However, planting density/HDI had highly significant (P ≤ 0.01) effects on the yield, WUE, and NWP of selected mineral elements in leafy tissues of the selected vegetable plant. The highest yield was obtained at planting density/HDI of 7, it decreased with increasing planting density/HDI above that. Similarly, the highest WUE was obtained at planting density/HDI of 7, but also reduced with increasing planting density/HDI above that. Relative to one plant/HDI, NWP of (Ca, K, Mg, P) reached the highest at 9 planting density/HDI, whereas NWP of (Fe, Na, and Zn) reached the highest at 7 planting density/HDI, but then decreased when planting density/HDI increased. Therefore, planting densities/HDI of 7 and 9 highly improved yield, WUE, and NWP of tested mineral elements, which would result in high-quality crops suitable for human consumption.

Keywords

Agronomical management food security indigenous leafy vegetable nutritional water productivity planting density/HDI 


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