EVALUATION OF SOME LOCAL INSECTICIDES AND THIER ALTERNATIVES AGAINST (Scymnus Syriacus MARS).

Document Type : Original Article

Authors

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

Abstract

The extremely hazardous effects of the local insecticidal alternatives
namely; mineral oil CAPL-2; organic acid; i.e. citric acid as well as
biocides included profect evaluated against the predaceous insect; Scymnus
syriacus Mars. Stages (egg, Larvae, pupae and adult) in comparable with
the conventional insecticide; Nuvacron. Four Experiments were carried out
for determination the hazardous effects of insecticidal alternatives and
Navacron by using their recommend rates for controlling either aphid/firstly
for determination of their ovicidal effect secondly, determination of their
toxic effect on the larval stage, the third one for determination their efficacy
against pupae and the fourth experiment was aimed to determine their toxic
effect on the adult stage. Two methods were used for the evaluation the type
stage of the natural enemy, where in case of non-feeding stages included egg
and pupae were exposed directly spraying with recommend rats of the
components used for those stages. Concerning feeding stages; i.e. larvae
and adult was introduced to the leaves were sprayed with the recommended
rates of the tested materials forementioned previously. The obtained results
indicated that the conventional insecticide ie. Nuvacron was the most most
hazarvdous treatment against all stages of the predaceus insect Scymnus
syriacus Mars. While the citric acid was the most safe component followed
by the tested biocide; as well as CAPL-2. It could be concluded that the
insecticidal alternatives should be used in the IPM programs for controlling
the cotton aphids in the objective of keeping the natural enemies to do their
effects as control agent.

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