Author(s):

MM Sonkamble, BS Rana and NL Dangi

Abstract: Present investigation were carried out at the laboratory Department of Entomology, RCA, Udaipur during kharif 2014 and 2015. Life table studies of S. litura on soybean reported that the mortality in egg stages during both the year kharif 2014 and 2015 was due to infertility and unavailability in eggs respectively. The mortality factors in younger larvae (I to III instar) during 2014 and 2015 was due to Braconids, respectively. The cumulative mortality factors in larvae from IV to VI instars during both the years 2014 and 2015 was 54 per cent and 69 per cent due to, N. rileyi, unknown reasons, tachinid fly and disease respectively. Life table studies of semilooper on soybean revealed that the mortality in egg stages during both the year kharif 2014 and 2015 was due to unknown reasons and infertility in eggs respectively. The mortality factors in younger larvae (I to III instar) during 2014 and 2015 was due to parasitization and Braconids, respectively. The cumulative mortality factors in larvae from IV to VI instars during 2014 and 2015 were 54 per cent and 67 per cent due to tachinid fly dispersion, predation, unknown reasons, and disease respectively.

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