Influence of abiotic factors on major insect and mite pests of jasmine, Jasminum sambac L

Abstract

Jasmine is an important ornamental crop with attractive fragrant flowers, fetches instant revenue to the farmers. It is attacked by several insect pests and cause considerable economic loss. Studies on seasonal occurrence of insect pests of jasmine was studied during 2019-20 at Tiruchirappalli, India. Among different insect pests, blossom midge was recorded with maximum incidence during August II (34.05% Infested buds). Occurrence of midge was positively correlated with maximum temperature (r = 0.159) and minimum temperature (r = 0.505). The multiple linear regression on damage with weather parameter was worked out and it indicates that the cecidomyid pest was 85.4% influenced by various weather parameters. The incidence of other insect pests viz., bud worm, leaf web worm and red spider mite was recorded and correlated with weather parameters.