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Abstract The effects of spraying chili peppers with different concentrations of calcium (0, 500, and 1000 mg L -1 ) and the amino acids arginine and glycine (0, 100, and 200 mg L -1 ) on their vegetative growth and flowering traits were studied in a field experiment that took place during the 2022–2023 agricultural season at the Research Station of the at College of Agriculture / University of Diyala. The experiment was conducted using a randomized complete block design (RCBD) and analyzed using SAS. Dunkin’s multinomial test was used to evaluate the average attributes at a probability threshold of 0.05. Here is what the results revealed: At a rate of 1000 mg L -1 , calcium spraying produced superior results in terms of plant height, leaf area, leaf chlorophyll content, fruit setting percentage, and nitrogen, potassium, and calcium percetage in the leaves. The number of flowers (102.89 total) and the percentage of fruit that set were both improved by spraying with a calcium concentration of 500 mg L -1 . There was an improvement in both the quantity of leaves and the nitrogen % when arginine was sprayed at a dosage of 200 mg L -1 . At 100 mg L -1 , glycine was the most effective in increasing flowering time, but at 200 mg L -1 , it outperformed at the same concentration in terms of plant height, leaf area, chlorophyll content, fruit setting %, and leaf calcium and potassium percentages.
Al-Nussairawi et al. (Mon,) studied this question.