EFFICACY BIOLOGY OF CASTOR SEMILOOPER (Achaea janata L.) INFESTING CASTOR CROP
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 51
Abstract
The present study was conducted at Chaudhary Charan Singh Haryana Agricultural University, Hisar, Regional Research Station, Bawal, Haryana (India) during the Kharif season of 2013-14. The average duration of eggs stage lasts for 2.32± 0.20 days. The larvae passed through five instars stages and mean duration of five instars stages were 1.5 ± 0.19, 1.7 ± 0.15, 2.1 ± 0.20, 2.3 ± 0.17 and 4.3 ± 0.21 days, respectively. Average larval and pupal period lasts 11.9 ± 0.54 and 8.95 ± 0.43 days. The average moth emergence was 95 per cent with the preponderance of males and their ratio was 1:0.85 (male: female). The pre-oviposition, oviposition, and post-oviposition periods ranged from 1-3, 4-7 and 3-6 days, respectively. The female lived slightly longer (11.2 days) than as compared to males (9.3 days). On an average, a female laid 351.2 ± 26.84 eggs during its life span.
Authors and Affiliations
YASHDEV SINGH
Keywords
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