Studies on chemical control of two-spotted spider mite, Tetranychus urticae Koch (Acarina: Tetranychidae) on screen house roses

Five pesticides viz., dicofol 0.04%, imidacloprid 0.04%, propargite 0.1%, oxydemeton methyl 0.05% and dimethoate 0.06% were evaluated for their efficacy against eggs and active stages of Tetranychus urticae on rose in glasshouse at Punjab Agricultural University Ludhiana. All the insecticides except imidacloprid reduced the number of eggs and active stages after 1, 3,7 & 10 day after spray. The overall effectiveness of the insecticides was in order of propargite 0.1%, dicofol 0.04%, dimethoate 0.06% and oxydemeton methyl 0.05%. Any of the pesticides from dimethoate, oxydemeton methyl, propargite and dicofol may be used to protect rose crop from T. urticae in glasshouses.