Vol. 11, Special Issue 3 (2022)

Author(s):
Chavan SS, Narangalkar AL and Sapkal SD

Abstract:
The intensive survey of rugose spiralling whitefly (RSW), Aleurodicus rugioperculatus (Martin) was carried out in five districts of the Konkan region viz., Sindhudurg, Ratnagiri, Raigad, Thane and Palghar etc. during January, 2021 to assess the intensity of infestation and damage grade index. The intensity of infestation was statistically low in Thane (37.87%) followed by Sindhudurga (41.51%) and Ratnagiri (52.14 %) district. The highest intensity of infestation was recorded in Palghar (76.86%) followed by Raigad (74.50%). The damage grade index of all districts was medium. The maximum damage grade index was recorded in Raigad district (1.74) while the minimum was recorded in the Sindhudurga district (1.02). The damage grade index of Thane, Ratnagiri and Palghar were 1.56, 1.65 and 1.71, respectively.