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VOL. 8, ISSUE 2 (2026)
Influence of climatic factors on the occurrence of major insect pests of rice in the coastal agro-ecosystem of Karaikal
Authors
G Nivetha, M Kandibane, S Thulasi
Abstract
Seasonal incidence of insect pests of rice was investigated during Rabi
2024–25 and Summer 2025 in Pandit Jawaharlal Nehru College of Agriculture and
Research Institute, Karaikal. Distinct seasonal peaks were observed, with major
pests including thrips, yellow stem borer, leaf folder, planthoppers,
leafhoppers, earhead bug, black bug and rice hispa showing higher incidence
between 46th–52nd SMW (Rabi) and 15th–22nd SMW (Summer). Correlation
analysis indicated that pest populations were significantly influenced by
climatic factors. Thrips, leaf folder, and planthoppers showed significant
associations with temperature, relative humidity, and rainfall, though the
direction of relationships varied between seasons. Yellow stem borer, green
leafhopper, earhead bug, black bug and rice hispa also exhibited significant
weather-dependent incidence patterns. Multiple linear regression revealed that
climatic variables explained 42–79 per cent of pest variability during Rabi
and 53–81 per cent during Summer. These findings emphasize the role of weather
parameters in shaping pest dynamics and support the development of
climate-based pest management strategies in rice.
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Pages:151-159
How to cite this article:
G Nivetha, M Kandibane, S Thulasi "Influence of climatic factors on the occurrence of major insect pests of rice in the coastal agro-ecosystem of Karaikal". International Journal of Agriculture and Plant Science, Vol 8, Issue 2, 2026, Pages 151-159
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