Population Abundance and Eco-friendly Management of Pest Complex on Okra, Abelmoschus esculentus (L.) Moench under Semi Arid Agro-ecosystem of Rajasthan
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Date
2022
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Abstract
The study on “Population Abundance and Eco-friendly Management of
Pest Complex on Okra, Abelmoschus esculentus (L.) Moench under Semi
Arid Agro-ecosystem of Rajasthan” was carried out at Rajasthan Agricultural
Research Institute, SKNAU, Durgapura, Jaipur during years 2018 and 2019.
Observations on population abundance of pest complex in okra showed
whitefly population peak level in last week of September during 2018 and in first
week of October during 2019. Minimum temperature during 2018 and morning and
evening relative humidity and rainfall during 2019 showed significant and negative
influence on population of whitefly. The leafhopper attained the peak in last week of
August during 2018 and 2019. During 2018, maximum temperature, morning and
evening relative humidity and rainfall showed positive and significant correlation
with leafhopper population. Mite pest reached the peak in second week of October.
During 2018, maximum temperature showed positive, while, minimum temperature
and morning and evening relative humidity showed significant and negative
correlation with mite population. Likewise, the influence of minimum temperature
and morning and evening relative humidity was significant and negative on mite
abundance during 2019. Infestation of shoot caused by shoot and fruit borer
reached the maximum level in second week of September during both the years.
Here, maximum temperature exhibited significant and negative influence during
2018, while, morning and evening relative humidity showed significant and positive
influence during 2019 on shoot infestation. The fruit damage was recorded at
maximum level on number and weight basis in last picking done in fourth week of
October during both the years. The influence of minimum temperature and morning