Effect of Spraying Potassium and Selenium on the Vegetative Growth Characteristics of Bean Plant (Phaseolus vulgares L.) Affected by Water Stress

Abstract

A field experiment was conducted at the University of Diyala - College of Agriculture - site of graduate students’ research projects during the spring season 2022, for the purpose of studying the effect of spraying the elements selenium and potassium on climbing bean plants in addressing the harmful effect of water stress and its effect on vegetative characteristics (plant height, leaf area, Chlorophyll content, number of leaves and dry weight of the plant) of the bean plant. The experiment was designed according to the split split plot design (RCBD). It was a factorial experiment with three factors. The experimental parameters included the following: Three levels of water stress according to the field capacity (20%)., 40%, 60%) denoted by the symbol (W1, W2, W3) and three levels of spraying with potassium (0, 500, 1000) mg.L-1 denoted by the symbol (K0, K1, K2) and three levels of spraying with selenium (0, 5, 10) are symbolized by (Se0, Se1, Se2), The climbing bean plant was cultivated, and the results showed that water stress at (60%) of the field capacity led to a decrease in the studied characteristics. The triple interaction between the three factors of the study treated the damage of water stress through the presence of an increase in the percentage of all studied vegetative characteristics when spraying with potassium and selenium.