Technology Gaps Analysis in Integrated Management of Jasmine's Leaf Webworm (Nausinoe geometralis) in Tamil Nadu

摘要

Investigations were conducted during 2015-2016, in major jasmine growing districts of Tamil Nadu, for assessing the distribution, infestation level and the relative importance of leaf webworm of jasmine, Nausinoe geometralis . The incidence was more in Madurai (28.75%) followed by Coimbatore (27.65%), Virdhunagar (25.42%) and Tiruneveli (25.36%) districts. Forty nine % respondents were aware of leaf webworm as a pest, but only nine % respondents ranked it as the most important pest. The technological gap indices (TGI) were high in adopting right frequency in spraying of chemicals (91%), usage of biological control agents (87%) and effective cultural practices viz ., regular raking of soil to destroy pupa (85%) and collection and destruction of fallen and discolored buds and flowers (82%). A majority of respondents (52.94%) had high level of technological gap, whereas, only 11.76% were in low level of technology gap. Thus, efforts should be taken to create awareness among jasmine growers for the use of eco-friendly bio-control methods against jasmine leaf webworm as well as other pests of jasmine.