EFFECT OF FOLIAR BY SELENIUM AND POTASSIUM HUMATE AS A SOIL APPLICATION ON GROWTH AND PRODUCTIVITY OF SUGAR APPLE TREES UNDER SALINITY CONDITIONS | ||
| Egyptian Journal of Desert Research | ||
| Volume 75, Issue 1, June 2025, Pages 273-300 PDF (971.96 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejdr.2025.408656.1215 | ||
| Author | ||
| Shaimaa M. Ataya* | ||
| Department of Plant Production, Desert Research Center, Cairo, Egypt | ||
| Abstract | ||
| This investigation was conducted at Sedyghazy private orchard, which is situated on Abu Ghaleb Road, Giza Governorate, Egypt, at El-kilo 164 km from Cairo to the Alex Desert Road. For two seasons (2019 and 2020), the experiment was conducted on 10-year-old Abdel-Razek Annona trees budded on Baladi Annona rootstock and planted at 3.5 x 3.5 meters apart. The trees were grown in sandy soil under a drip irrigation system (EC= 3.41 dS m-1). The experiment was arranged in a spilt-plot design and the main plots were represented four levels of foliar application of selenium (Se) (0, 5, 10 and 15 ppm), while the subplots included four rates of potassium humate (KH) as a soil application (0, 15, 30 and 60 g/tree) as possible alleviators of salinity. Data revealed that, for enhancing chlorophyll content and dry matter (%) with the exception of KH 0 g/tree × Se 0 ppm, all other possible combinations of KH × Se showed similar favorable effects. It is worthy to mention that KH 60 g/tree × Se 15 ppm, KH 30 g/tree × Se 15 ppm and KH 60 g/tree × Se 10 ppm were the most appropriate treatments for enhancing most of the significant yield attributes, fruit quality and leaf nutrient contents of Abdel-Razek Annona trees under salty soil. On the contrary, the same practices led to a reduction in leaf Na+ content in Abdel-Razek Annona trees. It could be recommended that a soil application of KH 60 g/tree followed by foliar spray with Se 15 ppm is suitable in mitigating the effects of salt stress and provided the best results in terms of fruit quality, production and nutritional status. | ||
| Keywords | ||
| Annona; soil amendments; total antioxidant; macronutrients; micronutrients | ||
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