The physiological role of potassium and calcium spraying on vegetative characteristics of two potato varieties
Keywords:
physiological, potassium, calcium spraying, vegetativeAbstract
An experiment was carried out in the forest area during the spring growing season 2021 to study the physiological role of calcium and potassium spraying on some vegetative growth characteristics in tow potato varieties. The experiment included two potato varieties , calcium in three concentrations (0, 500 and 1000 mg.L-1) and potassium in three concentrations (0, 2.5 and 5 gm. L-1), thus it included 18 treatments (2 x 3 x 3). The experiment was carried out in the field using the Split-Split Plots system within the RCBD design, each treatment was repeated three times. The results showed that Fandango cultivars were significantly superior the as compared to cultivar Sifra inall the studied traits . The plants which treated with both concentrations of calcium 500 and 1000 mg. L-1 achieved a significant increase in most of the studied traits compared to the untreated plants. The plants which treated with concentrations of 2.5 and 5 g.L-1 of potassium achieved a significant increase in the relative chlorophyll content of leaves, while using the concentration of 2.5 g. L-1 led to a significant increase in plant height. On the other hand, the leaf area was significantly increased when using the concentration 5 g. L-1.
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