Document Type : Original Article
Authors
1
Pesticides Unit, Department of Plant Protection, Desert Research Center, Cairo, Egypt
2
Department of Sand Dunes, Desert Research Center, Cairo, Egypt
3
Department of Scale Insects and Mealy Bug, Plant Protection Research Institute, Agricultural Research Center
Abstract
The current study was carried out during the two successive seasons of 2021 and 2022 on Ewais mango cultivar affected by the movement of sand dunes and grown in a private orchard in El-Mostakbal City, Ismailia Governorate, Egypt, to evaluate the effect of silicon formulations spraying and casuarina windbreak to control mango shield scale insect Milviscutulus mangiferae (green) (Hemipetra: Coccidae), and its effect on vegetative growth, leaf characteristics and yield. It can be concluded that the successful control of the mango shield scale insect can be achieved by diatom and Aglev Si 300 with a reduction percentage of more than 80%, followed by kaolin (60-87%) and bentonite (50-70%), respectively in different stages of mango shield scale insect (immature, adult and ovipositing adult stages). The efficacy of kaolineted potassium silicate and Si El-Ghanem compounds on the infestation percentage decreased with different stages with a reduction percentage of 79-91%, respectively against different stages of M. mangiferae. Extra power, triple power, boiled lime and sulfur against different stages had more than 90% reduction, compared to the control treatment. The results revealed that spraying silicon formulations with casuarina windbreak led to an increase in shoot diameter and length, leaf area, leaf total chlorophyll content, leaf water content, and yield. While, it decreased hard leaf character and leaf succulence grade, which led to an increase in the effectiveness of spraying silicon formulations in reducing infection. In addition, the casuarina windbreak significantly reduced sand drift.
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