This experiment was carried out at two different locations, the first location (Duhok) and the second location Zakho (Batifa) during spring growing season (2023). To determine the impact of three concentrations of bread yeast (0, 8 and 16 gL-1) and three concentrations of humic acid (0, 4 and 8 ml L-1) on two cultivars of potato (Laperla cv. and El Mudo cv.). The results noticed that the El Mudo cv. was superior over the Laperla cv. in weight of tuber (g), total yield (kg plant-1), phosphorus%, potassium%, and calcium% under both locations, nitrogen% in the first location. Foliar application of 16 g L-1 bread yeast significantly increased all the studied vegetative growth, yield and nutrient contents in both locations. Foliar application of 8 ml L-1 humic acid gave the highest significant value of plant height (cm), number of branches plant-1, leaf area (cm2), number of tuber, nitrogen%, potassium% and calcium% under both locations, while 4 ml L-1 significantly increased weight of tuber (g) and total yield (kg plant-1). The combined influences of two factors, namely cultivars and bread yeast, cultivars and humic acid, and bread yeast and humic acid, significantly enhanced most of the studied parameters. The triple interaction among three factors caused positive significant differences in all vegetative growth, yield and nutrient content in both locations.
Potato (Solanum tuberosum L.) is one of the most significant vegetable plants grown for human use and belongs to the Solanaceae family. Because potato is high in minerals, amino acids, and carbs, they rank fourth in terms of importance, behind wheat, rice, and maize . It is a globally diet that is a great source of carbs and low in fat. The potato production exceeded 376 million tons of potatoes produced worldwide, occupying 19.34 million hectares |
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