Study the Abiotic Factors Affecting Amplitude Fluctuation in the Population Dynamics of Okra Shoot and Fruit Borer (Earias vittella) on Okra in Uttar Pradesh

Author: Heenashree Mansion, Umesh Chandra, Amit Kumar and Shubham Singh

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Abstract

The present investigation was studied in Zaid season 2022 at student’s instructional farm, A.N.D. University of agriculture and Technology, Kumarganj, Ayodhya (U.P.). In the course of research, the Incidence that the population of shoot and fruit borer initiated after sowing till harvesting. The highest incidence of shoot borer was observed on Okra crop at 16th SW (13.40 %) and lowest 20th SW (0.36 %). The highest incidence of Fruit borer 18th SW (24.4 %) and lowest 22nd SMW (1.1 %). Correlation observed between the shoot borer population and abiotic parameters showed non-significant positive correlation with minimum and maximum temperature was observed non-significant negative correlation, while relative humidity showed significant negative correlation and rainfall had non- significant negative correlation. Correlation observed between the fruit borer population and abiotic parameters showed non-significant positive correlation with minimum and maximum temperature, while relative humidity showed non-significant negative correlation and rainfall had significant positive correlation. This study provides basic knowledge about the incidence and damage caused by this pest, and its behavior towards various abiotic factors.

Keywords

Earias vittella, Population, Correlation, abiotic factors

Conclusion

The shoot borer population was first time observed at 12th SW larva bores into tender terminal shoots in the vegetative stage and flower buds, flower and young fruits in the fruit formation stage. The shoot borer population (1.30%) was noticed at 12th SW at the minimum temperature of 18.5°, maximum temperature of 35.3, relative humidity and rainfall beat the minimum temperature of 22.04°, maximum temperature of 40.07°, relative humidity 66.5 per cent and rainfall 0 mm. The minimum infestation of 0.36 per cent damaged shoot/plant observed in 20th SW. The fruit borer population was started from 15th SW at the minimum temperature of 19.6°, maximum temperature of 39.2°, relative humidity 65.7 and rainfall 0 and mean population (4.6). Its maximum level (24.4%) at temperature ranged from 24-37°, relative humidity 77.1 per cent and rainfall 19.2. its minimum level of infestation (1.1%) at temperature range from 26.07-38.71°, relative humidity 75.71 per cent and rainfall 2.0 mm.

References

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How to cite this article

Heenashree Mansion, Umesh Chandra, Amit Kumar and Shubham Singh (2023). Study the Abiotic Factors Affecting Amplitude Fluctuation in the Population Dynamics of Okra Shoot and Fruit Borer (Earias vittella) on Okra in Uttar Pradesh. Biological Forum – An International Journal, 15(5a): 317-319.