Using the seven spotted lady beetle, Coccinella Septempuncta ta for controlling Aphis Gossypii and Myzus Persicae aggregations on apple trees [electronic resource].

Includes references.

The seven-spotted ladybird, Coccinella septempunctata L. (Coleoptera : Coccinellidae), is an important predator of aphids, playing a good role in reducing the population density of the cotton aphid, Aphis gossypii (Glover) and the green peach aphid, Myzus persicae (Sulzer) (Homoptera : Aphididae) complex attacking apple trees. C septempunctata was released (one time), at early April 2004 and repeated in 2005, at Qalubiya Governorate at rates of 30, 60 and 90 eggs/tree. During the first season (2004), the reduction percentages in the population of A. gdssypii and M. persicae increased gradually with elapse of time reaching the maximum. The achieved average reductions in aphid population were 72.94, 79.85 and 93.14% at the end of November for the three releasing levels, respectively in the first year (2004). However, the same trend was achieved in the second season (2005). The present work, has shown that the seven-spotted ladybird, Coccinella septempunctata L. could used successfully, as a biocontrol agent in an integrated program for controlling incorporated both of the cotton aphid and the green peach aphid on the apple trees.

Summary in Arabic.

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