Brinjal shoot and fruit borer (Leucinodes orbonalis Guenee) seasonal activity and association with abiotic factor

Prince Mahore, Nikki Bhardwaj, Pradyumn Singh, Mitesh Makwana, Dheerendra Mahor, Naveen, Neeraj Kumar, Sitaram Seervi and Sonu Sharma
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Prince Mahore: Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India
Nikki Bhardwaj: Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India
Pradyumn Singh: Department of Entomology, College of Agriculture, Khandwa, Madhya Pradesh, India
Mitesh Makwana: Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India
Dheerendra Mahor: Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India
Naveen: Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India
Neeraj Kumar: Department of Entomology, Jawaharlal Nahru Krishi Vishwa, Jabalpur, Madhya Pradesh, India
Sitaram Seervi: Department of Entomology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India
Sonu Sharma: Department of Plant Pathology, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh, India

Plant Protection Science, 2025, vol. 61, issue 2, 183-190

Abstract: The study has been conducted at Research Farm, College of Agriculture, Gwalior (M.P.), in the summers of 2021 and 2022. In the summers of 2021 and 2022, the crop was first infested by the shoot and fruit borer on the 10th and 13th standard meteorological week (SMW). The infestation persisted until the 23rd and 24th SMW, respectively. During the first year, the 15th SMW had the highest infestation rate for shoot damage, 15.76%, while the 18th SMW had the highest infestation rate for shoot damage, 15.07%, in the second year. Whereas fruit damage per cent is calculated based on number and weight, and its peak per cent infestation was noted on the 22nd SMW with 31.67% based on number, 30.12% based on weight during the first year, and 30.34% based on number and 29.95% based on weight during the second year, which was noted on the 23rd SMW. There was a significant positive correlation between maximum temperature and shoot damage percentage (r = 0.62) and minimum temperature and fruit damage percentage based on number (r = 0.87) and weight (r = 0.88) during the first year of study. However, during the first year of the study, there was a negative association (r = -0.68) between morning relative humidity and shoot damage per cent. The following year's research revealed a highly significant positive link between maximum temperature, minimum temperature, and evaporation with fruit damage (%) based on the number (r = 0.64, 0.92, and 0.82) and based on weight (r = 0.63, 0.92, and 0.82), respectively.

Keywords: standard metrological week; shoot damage; fruit damage; peak population; correlation (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpps:v:61:y:2025:i:2:id:3-2024-pps

DOI: 10.17221/3/2024-PPS

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