Seasonal incidence and management of Lasora fruit weevil under low and mid hills of Himachal Pradesh
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Date
2024-05-21
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College of Horticulture and Forestry Dr YSP UHF, Neri, Hamirpur(H.P.)
Abstract
The present investigations entitled ‘Seasonal incidence and management of Lasora fruit weevil under low and mid hills of Himachal Pradesh’ were carried out in year 2022-2023 at experimental farm, COHF, Khaggal (HP). Samples were collected and sent HARC, Solan which revealed that Lasora fruit borer belongs to genus Barioscapus and species cordiae. Experiments were conducted on seasonal incidence and management of Lasora weevil using different insecticides and biopesticides. During the investigation, it was noted that the larvae exhibit an apodous, C-shaped form, appearing white and fleshy with a noticeable brown head capsule. The pupa is of the exarate type and has a pale white coloration. Adult weevils arecharacterized by an elongated snout, equipped with chewing and biting mouthparts. It was revealed that population of the weevil was maximum in July and minimum in May. Out of the seven insecticides and biopesticides which were evaluated against Lasora fruit weevil,Chlorantraniliprol 18.5% SC were proved best which was 3.64 times superior to control. Percent reduction of insecticides over control was calculated and revealed that chlorantraniliprol has 72.55 per cent reduction of weevil incidence. All the treatments proved significantly superior to control.