Effect of Soaking Tubers in Potassium Humate and Foliar Application of Nano-Calcium Fertilizer on some Growth Traits of Two Potato Cultivars

Abstract In the spring of 2022, researchers from University Mosul’s Faculty Agriculture and Forestry conducted an experiment on a vegetable field. this experiment, we looked at three variables: first, effects two different potato cultivars (Montreal EL-Beida). For second part, soaked potatoes in solution potassium humate with concentration (0, 0.5, 1 g L -1 ). Therefore, had 18 treatments (2 3 3), third factor being Nano-calcium fertilizer concentrations 1.5, 2.5 ) applied to plants stages plant growth: first 20 days after full germination, stages, 20-day interval between addition another. Cultivars were positioned primary plots, interaction additional variables located sub-plots, as part factorial inside split-plot utilizing Randomized Complete Block Design repetitions. Duncan’s multiple range test for comparing means was used analyze data 5% significance level. This leads following conclusion: Of tested, Montreal variety performed best when concentrations, increasing both leaf area dry matter percentage vegetative development (0.5 1). total chlorophyll content significantly increased by g.L . The statistically significant height, number aerial stems, leafy obtained spraying calcium Nano-fertilizer doses.