Relative abundance of thrips species recorded on tomato in major tomato growing areas of Karnataka

Abstract

A survey was carried out in eight major tomato growing districts of Karnataka viz., Chamarajanagara, Mysuru, Mandya, Bengaluru rural, Kolar, Haveri, Belagavi and Bagalkot during the months of June to August, 2016 to find out relative abundance of thrips by collecting them on tomato. Among the four different species occurring on tomato viz, Thrips palmi, Scirtothrips dorsalis, Frankliniella schultzei and Thrips tabaci, theT. palmi was more abundantly occurred on tomato in all localities where the survey was conducted (45.50%). The next dominant species was S. dorsalis (22.00%) in all localities except Mysuru and Belagavi districts, whereas, in case of Mysuru, Bengaluru rural, Haveri and Bagalkot regions, F. schultzei was abundant as compared to other species. Interestingly, in Mandya, Haveri and Bagalkot district T. tabaci was recorded up to 12.00, 12.00 and 16.00 per cent, respectively as compared to other districts surveyed. Other unidentified species also recorded from all localities surveyed.