Varietal Preference of Okra Shoot and Fruit Borer, Earias vittella (Fab.) in Summer Season under Field Condition in Konkan Region of Maharashtra

Jalgaonkar, VN; Mahla, Manoj; Naik, K. S.; Vyas, A. V.; Golvankar, Gopal

doi:10.20546/ijcmas.2018.711.272

Cited by 2 publications

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“…Regarding the vegetative damage in Spinosad-treated plot, 2.56-3.33% shoot infestation was reported by Mohammad et al [8], which is partly comparable with our current results (3.80% shoot infestation). Jalgaonkar et al [26] and Rahman et al [27] found higher shoot damage by E. vitella (12.98-26.81% and 17.29-19.78% shoot infestation, respectively) compared with our study. As for the fruit damage in the Spinosad-treated plot, we found 3.56% fruit infestation, whereas Birah et al [28] and Rahman et al [27] reported much higher fruit infestation (18.89-37.74% and 10.05-14.98%, respectively) by E. vitella.…”

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confidence: 49%

Evaluation of Biological Approaches for Controlling Shoot and Fruit Borer (Earias vitella F.) of Okra Grown in Peri-Urban Area in Bangladesh

et al. 2021

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Irrational applications of insecticides on vegetable crops are very common in Bangladesh, resulting in harmful consequences for the environment and human health. Therefore, a study was conducted to evaluate the efficacy of biological and botanical insecticides on okra shoot and fruit borer grown in open fields. Four insecticides were used in this study, namely Bacillus thuringiensis (Bt), Spinosad 45 SC, Abamectin 1.8 EC, and Azadirachtin 1% EC an untreated control. The experiment used a randomized complete block design (RCBD) with three replications. The results showed that the rate of shoot infestation was the lowest in the Spinosad-treated plot (3.80%), and the highest was in the control (20.67%). The lowest fruit infestation (3.56%) was recorded in the treated plot of Spinosad. The rate of reduction of fruit infestation over control was 80.69, 60.14, 56.45, and 55.58% in the plots treated with Spinosad, Bt, Azadirachtin, and Abamectin, respectively. Consequently, the Spinosad-treated plot attained the highest yield (8.65 t ha−1), which was followed by the plots treated with Azadirachtin (6.74 t ha−1), Bt (6.28 t ha−1), and Abamectin (6.12 t ha−1). The highest net return and benefit–cost ratio (BCR) were 542.36 US$ and 2.64, obtained respectively from the Spinosad-treated plot. The second highest BCR (1.70) was obtained from the Azadiratin-treated plot, and the lowest BCR (1.18) was recorded in the Abamectin-treated plot. Therefore, the studied insect management practices could be incorporated to attain higher yields and economic benefits for growing okra in Bangladesh.

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Section: Discussioncontrasting

confidence: 49%

Evaluation of Biological Approaches for Controlling Shoot and Fruit Borer (Earias vitella F.) of Okra Grown in Peri-Urban Area in Bangladesh

et al. 2021

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A comparative study of biology and morphometrics of two different species of Earias on okra crop

Sheoran,

Kalkal,

Rolania

et al. 2023

Int J Trop Insect Sci

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Okra shoot and fruit borers, Earias insulana and Earias vittella are the major pests of economically important crops like okra and cotton. It is important to understand pest biology and ecology before initiating control measures, however little is known about their comparative biology on okra. Therefore, we studied biometrics of E. insulana and E. vittella in laboratory conditions on okra fruits and recorded the duration of different life stages along with their morphological parameters, to differentiate both the species. Oviposition was comparable in both species, however, incubation period and oviposition period was shorter in E. vittella. Although incubation, oviposition, post-oviposition period were at par in both the species, but there was a significant difference in larval and pupa periods. Total life cycle being comparable in both species, the larval period was significantly longer in case of E. insulana (13.8 days), while its pupal period (8.5 days) was significantly shorter in comparision to E. vittella (9.9 days). Sex ratio in E. insulana and E. vittella was recorded as 1:0.72 and 1: 0.61 (male: female) respectively. Both species were slightly different in terms of their morphological parameters. This study provides basic knowledge about the biology of these pests that may be helpful while formulating IPM strategies against them in okra as well as cotton.

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Varietal Preference of Okra Shoot and Fruit Borer, Earias vittella (Fab.) in Summer Season under Field Condition in Konkan Region of Maharashtra

Cited by 2 publications

References 0 publications

Evaluation of Biological Approaches for Controlling Shoot and Fruit Borer (Earias vitella F.) of Okra Grown in Peri-Urban Area in Bangladesh

Evaluation of Biological Approaches for Controlling Shoot and Fruit Borer (Earias vitella F.) of Okra Grown in Peri-Urban Area in Bangladesh

A comparative study of biology and morphometrics of two different species of Earias on okra crop

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