Open AccessAcaricide Resistance in Tetranychus Urticae Koch Populations of Grapevine Orchard in Northern Karnataka, India
Publication year - 2019
Publication title -
journal of agriculture and horticulture research
Language(s) - English
Resource type - Journals
ISSN - 2643-671X
DOI - 10.33140/jahr.02.01.07
Subject(s) - abamectin , dicofol , tetranychus urticae , acaricide , ethion , biology , population , tetranychus , orchard , toxicology , spider mite , horticulture , pesticide , agronomy , pest analysis , medicine , diazinon , environmental health
Studies on Tetranychus urticae Koch population from grapevine orchard in Northern Karnataka resistance to major acaricidesviz., dicofol 18.5 EC, fenpyroximate 5 SC, diafenthiuron 50 SC, sulphur 80 WP, abamectin 1.9 EC, hexythiazox 5.45 EC,spiromecifen 240 SC, propargite 57% EC, ethion 50 EC, fenazaquin 10% EC. Acaricidal resistance to sulphur 80 WG washighest with LC50 of 17769 ppm for field population and 651 for laboratory susceptible culture. The resistance ratio forsulphur was 27.30. The least resistance ratio of 4.45 folds was observed for fenazaquin 10% EC for which field and laboratorysusceptible populations have exhibited LC50 of 44.62 ppm and 9.57 ppm, respectively. Based on the resistance co efficient useof sulphur appeared risky with high level of resistance. Propargite 57% EC, dicofol 18.5 EC and fenazaquin 10% EC havebeen classified as chemicals with low level of resistance for grape mites.