Controlling Fruit Physiological Disorders and Improving Productivity of Pomegranate Shrubs by Using Some Nutrients Spraying

Abstract

The present work was conducted in private orchard located in the northwest of Giza Governorate, Egypt during the seasons of 2022 and 2023 to study the effect of foliar application by using some nutrients calcium chloride (CaCl2), sodium chloride (NaCl) and sodium bicarbonate (NaHCO3) after two and eight weeks from bloom on yield. Fruit cracking, sunburn, yield, fruit quality and physical
characteristics were determined. The obtained results showed that all treatments under study decreased the fruit sunburn and cracking percentages and increased the yield of both seasons. Using NaCl proved to be the most effective in enhancing yield. In addition, spraying with NaCl and NaHCO3 treatments enhanced the highest improvement of all chemical properties under study. Also, spraying with NaCl treatment among the other treatments under study and succeeded increasing leaf N, Ca, K, and P as well as increasing seed N, Mn, and Ca as compared with either CaCl2 or NaHCO3.On the other hand, spraying with CaCl2 succeeded in increasing leaf Zn and Mg as well as increasing Fe and P. It can be recommended from results of the present study to consider spraying minerals nutrients during twice of 30 days after fruit set in each season have an efficient an effect on improving characteristics of pomegranate fruit quality.