Life table of Earias vitella (F.) on okra cultivars

Field investigations were conducted to ascertain the key mortality factors of Earias vitella on okra cultivars i.e., Parbhani Kranti, wild cultivar and Arka Anamika for three generations. These revealed that unknown reasons, the larval parasitoids (Rogas sp.; Bracon lefroyi) and the pupal parasitoid (Bassus fabiae) are the mortality factors. The unknown reasons and B. fabiae might be the key mortality factors during larval and pupal stages, respectively. Among the studied biotic factors, the highest parasitization resulted from B. fabiae across the cultivars with a maximum of 43.24% on the Arka Anamika cultivar. The decreasing values of Trend Index in all the generations reared on different cultivars revealed that the mortality factors were effective in reducing the pest population.