Oviposition and larval survival of diamondback moth, Plutella xylostella under protected Indian mustard field conditions
Keywords:
Cauliflower, Indian mustard, P. xylostella, Pusa Bold, Pusa Jaikisan, oviposition,Abstract
Incidence of Indian mustard var. Pusa Bold and Pusa Jaikisan on the oviposition of Plutella xylostella (Order Lepidoptera: Family, Plutellidae) has significantly (P<0.05) preferred to oviposit on cauliflower (control) as compared to Indian mustard in both choice and no-choice tests. In the choice test, females preferred to lay more eggs on Pusa Bold than on Pusa Jaikisan. In the experiment conducted in the month of October (2017-18), female oviposits significantly (P<0.05) highest number of eggs laid by P. xylostella was recorded in the month of October and the smallest in January 2017-18, and 2018-19 where 72.05 eggs/female on cauliflower. Fecundity of P. xylostella was found significantly (P<0.05) highest on cauliflower as compared to Indian mustard. Cauliflower received a maximum number of eggs (225.72) during the experiment in the month of October but fecundity tends to decrease from November to January. Pusa Bold is significantly (P<0.05) more preferred by female P. xylostella to lay eggs than that of Pusa Jaikisan. The Pusa Jaikisan may be more effective for integrated pest management of brassica crops.
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