COMPARISON BETWEEN AERIAL AND GROUND SPRAYING AGAINST THE CALIFORNIA RED SCALE, AONIDIELLA AURANTII (MASK.) AND DIALEURODES CITRI (ASHMEAD) ON CITRUS TREES.

Document Type : Original Article

Authors

Plant Protection Research Institute, Agricultural Research Centre, Dokki, Giza, Egypt

Abstract

Efficiency of Misrona Super oil to various life stages of_the Cali­fornia red scale, Aonidiella aurantii and the citrus white fly, Dialeurocies citri infesting orange trees by ground spray motor (48 I. M.S. oil/fed.) and aerial spray by helicopter (10 I.M.S. oil/fed.) in Sharkiya Governorate was investigated. Both methods gave satisfactory results and no phytotoxicity was observed after winter application with a superior efficacy for helicopter. Insects existing on the low and high levels of orange trees were the most responsive to the miscible oil activity especially in aerial applica­tion. Also, the immature stages of both pests were most sensitive to the m.s. oil efficacy than the pupal and adult stages. Therefore, it seems that helicopter might be introduced as a useful technique for controlling scale insects and white flies by using miscible oil especially in case of large areas of citrus trees. This method saves great amount of chemi­cals, water, time, cost and minimizes the environmental pollution.

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