Abstract
Evaluation of New Acaricides Against Spider Mite Tetranychus urticae Koch on Rose
Author(s): Bhaskaran EV and Ramaraju KA field experiment was conducted at Mettupalayam to evaluate the bioefficacy of new acaricides against the spider mite, Tetranychus urticae Koch on rose. Among the chemicals tested, fenpyroximate 5 SC (0.006%) was the most effective one recording 81.73-93.28 per cent reduction in mites after the first round of spray up to 15 DAT followed by fenazaquin 10 ECat 0.02%(78.18-86.90%), diafenthiuron 50 SCat 0.09%(73.24-86.90%), buprofezin 25ECat 0.03%(74.63-83.05%) and diafenthiuron 50WP at 0.09% (67.59 - 85.90%).Asimilar trend was also observed in the second round of spraying. The highest yield was recorded in plants treated with fenpyroximate 5 SC followed by fenazaquin 10 EC when compared to untreated check. No phytotoxicity symptom was observed in any of the plots treated with new acaricides/ insecticides.
