Abstract
The research studies were carried out on chewing insect pest causing rigorous damaged to fruit. The data was taken from 30 plants on a weekly basis randomly. The result shows that the overall mean percent of monthly damaged okra fruits populations founded in October, November, and December months. The highest damage in okra fruits were found December month, 79.47 ± 4.89 compression to November, 66.26 ± 12.43 and October, 34.15 ± 8.45, respectively. The total consumed mean of days by Earias vittella as follows; egg laid, 145.25 ± 15.45; egg hatched, 125.70 ± 22.44; hatching 85.14 ± 7.60%; egg incubation 2.95 ± 0.30 days, larval stage, 13.00 ± 0.79 days; pupae / cocoon, 9.45 ± 0.43 days, adult females, 9.45 ± 1.42 days, adult male, 7.32 ± 0.99 days, with the overall female days, 35.00 ± 1.12 and male 30.00 ± 0.43 days consumed under room temperature conditions. The biological studies of Earias vittella were found by mean population overall as under; At the first stage of female egg laying stage A.C temperature was 65.00 ± 14.67, egg hatched, 53.12 ± 13.57; hatching 81.27 ± 2.36%, eggs, 4.76 ± 0.92 days, larval stage, 15.00 ± 0.87 days, pupae / cocoon, 14.24 ± 0.61 days; adult females, 13.32 ± 0.41 days; male adult, 11.72 ± 1.07 days; overall female 50.00 ± 2.16 days, male 40.96 ± 2.35 days, respectively. In last it is observed that Earias vittella is heterophagous introducing maximum infestation at natural envirmental circumstances left behind nearly 80% if biological control might be encouraged that would be easily controlled without causing severe damage to okra vegetables.
