ISHS Acta Horticulturae 525: International Conference on Integrated Fruit Production
ABUNDANCE OF INSECT AND MITE SPECIES IN SOME CITRUS ORCHARDS |
| Authors: | Eglal M. Helal, A.R. Donia, Madiha M. Abd El-Hamid, Ehsan A. Zakzouk |
| Abstract:
A survey of pests and mites occurring on Citrus sinensis Qsheck var. Washington novel and Citrus aurantium L. at Alexandria and Damanhour, Egypt was carried out for a whole year. Seven insect pests were found, of which the citrus white fly, Aleurotrachelus citri was the most common. The predator aphid lion Chrysopa vulgaris also occurred attacking the citrus mealy bug Planococcus citri. Eleven phytophagous, predaceous and saprophagous mite species prevailed on orange and sour orange in both experimental locations. In addition, four mite species were also found associated with weeds growing in citrus orchards at Alexandria, including one phytophagous and three predaceous species. The results indicated that Aleurotrachelus citri is a major pest of citrus. Its pattern of distribution was followed at both locations. The correlations between temperature and relative humidity and the abundance of insects and mites on both citrus species were studied. Ideally the correlations between the predaceous mites and their prey were also investigated. | |
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