|Online ISSN : 2349-8080
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2Department of Agronomy, College of Agriculture
3Department of Plant Pathology, College of Agriculture,
University of Agricultural and Horticultural Sciences, Shivamogga-577204, Karnataka, India
A study on the Bioefficacy of acaricides against red spider mite, Tetranychus macfarlanei infesting soybean was conducted. Six new acaricides viz., propargite, fenazaquin, spiromecifen, diafenthiuron, fenpyroximate and chlorfenapyr along with a standard check dicofol were evaluated. Among them Propargite 57 EC @ 427.50 a.i./ha proved to be highly effective in reducing the mite population with highest yield of 21.74 q/ha and also had highest C: B ratio of 1: 3.91 followed by spiromecifen 22.9 SC @ 91.60 a.i./ha which registered yield of 18.66 q/ha and C: B ratio of 1: 3.28.