Growth And Yield Of Tomato As Influenced By Water Stress At Different Phenological Stages

Abstract

The study investigates the effect of water stress at different phenological stages on tomato growth and yield. Tomato is a vital vegetable crop in Nigeria, and water scarcity poses challenges to its productivity. The study was carried out in a screen house, water was applied daily with 100% potential evapotranspiration rate except during the ten days water stress applied at every phenological stage. The parameters assessed include number of leaves, plant height (cm), stem diameter (mm), and root and shoot dry weights (g), in addition, the water use efficiency. The results were subjected to Analysis of Variance and the means were compared using Least Significant Difference at 5% level of significance. The results show that there was no significant difference (p≥0.05) in the water use efficiency of the tomato plants subjected to water stress at the phenological stages. Notably, the study highlights that the vegetative stage is particularly sensitive to water stress, leading to reduced shoot dry weight and compromised overall biomass. Similarly, water stress during the flowering stage diminishes root dry weight. However, the fruiting stage exhibits relatively better yields under water stress than other stages. The findings emphasize the importance of effective irrigation management, particularly during the vegetative phase, to promote optimal plant development. Moreover, the research underscores the significance of providing adequate water during reproductive phases to enhance fruit production and overall plant performance.