EFFICACY OF SOME PESTICIDES AGAINST THE ADULTS OF TWO SPOTTED RED SPIDER MITE (TETRANYCHUS URTICAE KOCH.) ON ACALYPHA COPPERENCIS L. IN LABORATORY CONDITION
SAMAPIKA HAZRA *
DEPARTMENT OF AGRICULTURAL ENTOMOLOGY, BIDHAN CHANDRA KRISHI VISWAVIDYALAYA MOHANPUR-741 252, INDIA.
MID. MOHASIN *
DEPARTMENT OF AGRICULTURAL ENTOMOLOGY, BIDHAN CHANDRA KRISHI VISWAVIDYALAYA MOHANPUR-741 252, INDIA.
AMITAVA BANERJEE *
DEPARTMENT OF AGRICULTURAL ENTOMOLOGY, BIDHAN CHANDRA KRISHI VISWAVIDYALAYA MOHANPUR-741 252, INDIA.
K. KARMAKAR *
DEPARTMENT OF AGRICULTURAL ENTOMOLOGY, BIDHAN CHANDRA KRISHI VISWAVIDYALAYA MOHANPUR-741 252, INDIA.
*Author to whom correspondence should be addressed.
Abstract
A laboratory experiment was carried out to study the efficacy of some synthetic pesticides as well as seed kernel extract against the adults of two spotted red spider mite (Tetranychus articae Koch.) on one of its important ornamental host plant Acalypha copperencis L. The experiment reveals that among the synthetic pesticides used dicofol. 18.5 EC was the Superior while endosulfan 35EC and triazophos 40 EC have been found to possess acaricidal effect also. Neem seed kernel extract was found to be uneffective against this mite species.
Keywords: Tetranychus urticae, Acalypha copperencis, efficacy, pesticides neem seed kernel extract