Surveillance for potato tuber moth, Phthorimaea operculella Zeller (Lepidoptera: Gelichiidae) in Hassan district of Karnataka
Keywords:
potato tuber moth (PTM), Phthorimaea operculella, survey, hassanAbstract
Potato tuber moth (PTM), Phthorimaea operculella Zeller has become one of the most serious insect pests of potato (Solanum tuberosum L.) around the world, including in India. Field studies were conducted against PTM in Kharif and Rabi seasons during 2019-20 in seven and two taluks of Hassan districts of Karnataka, respectively to understand the extent of foliage damage and leaf mines. Among the mean per cent infestation of PTM during both the seasons of survey in Hassan district, where highest mean PTM incidence (6.19%) was witnessed during Kharif-2019 and it was least during Rabi-2019-20 (5.19%). Number of mined leaves per plant and number of mines per plant were observed lowest during Kharif-2019 season (2.62 and 4.32) compared to Rabi-2019-20 season with 3.04 mined leaves per plant and 4.44 mines per plant, respectively. All the above damage parameters didn’t reveal significant differences among the surveyed villages and taluks. In recent years, the temperature has been steadily rising due to climate change, and it is predicted that the occurrence of the PTM will continue to increase in the future. Therefore, the development of control technologies and intensive monitoring will be necessary for stable potato production as well as potato post-harvest.
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Copyright (c) 2022 Shahid Muddebihal, Chandrashekar G. S., Ramegowda G. K., S. V. Patil, Amarananjundeswara H, H. C. Krishna, Prasad P. S.
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