EFFICACY OF SOME INSECTICIDES AGAINST THE SCALE INSECT Hemiberlesia lataniae (SIGNORAT) (HOMOPTERA, DAISPIDIDAE) INFESTED MULBERRY TREES Morus alba (FAMILY MORACEAE).

Document Type : Research articles.

Authors

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

Abstract

Mulberry trees were heavily infested with the scale insect
Hemiberlesia lataniae(S) Therefore, Insect growth regulator (Admiral) 0.5%,
the organophosphate Pesticide (Malathion 57%Ec.) at 0.15% and the
mineral oil (Supermox) at 1.5%., were tested for against the scale insects
infesting mulberry trees in Giza. Reduction% in different stage of the insect
proportional to per- treatment counts ,were estimated according to Henderson
and Tilton (1955). Data were subject to Duncan’s multiple range test (Duncan
1951) 0.05, 0.01 between treatments and their efficacy on the different insect
stages. Results indicated that all tested materials were obvious differences
between the pre – treatment counts and the post treatment counts and also,
differences occurred among treatments. Moreover, the population density of
scale insect H. lataniae was reduced according to the potancy of each
compound .

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