EFFECT OF NATURAL SPRAYS ON MANGO TREES UNDER HEAT STRESS FROM CLIMATE CHANGE UNDER DESERT CONDITIONS | ||
| Egyptian Journal of Desert Research | ||
| Volume 75, Issue 2, December 2025, Pages 393-411 PDF (452.79 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejdr.2025.414654.1216 | ||
| Author | ||
| Fatma M. Abdalla* | ||
| Department of Plant Production, Desert Research Center, El-Matareya, Cairo, Egypt | ||
| Abstract | ||
| A field experiment was conducted during (2023 and 2024) seasons in private orchard situated in Abo Ghaleb Road (Alexandria Desert Road) Giza Governorate, Egypt. Foliar spray treatments were administered to an (18) years old mango Mangifera indica cv. Keitt. A randomized complete block design was used for the experiment and three types of materials were used; at three concentrations for each: kaolin at 2, 4 and 6%, calcium carbonate at 2, 4 and 6%, and titanium dioxide at 50, 100, 150 ppm to overcome the problems of climate change, especially high temperatures and their impact on growth, productivity, quality and prevent the injury of sunburn on fruits which causes economic losses. Treatments were sprayed in three different dates of two seasons (at the first week of June, July and August) compared with trees untreated (spraying water only) on vegetative growth, yield, fruit quality and nutritional status. Results showed that spraying titanium dioxide at 150 ppm improved trees growth characteristics, nutritional status, yield, fruit's chemical and physical characteristics. In addition, a positive effect on reducing number and percentages of sunburned fruits/tree this effect was clear detected under this experiment conditions. | ||
| Keywords | ||
| mango; kaolin; calcium carbonate; titanium dioxide and heat stress | ||
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