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CSME /
: 211-232
DOI:10.6703/IJASE.201812_15(3).211  
Tzss Trzaaing Txthniqux Using ahxroTonxs: z StznKzlonx TxthoK for TznzgxTxnt of KizTonKiztk Toth, alutxllz Xylostxllz (Linnzxus) (alutxlliKzx: LxaiKoatxrz) in tziizgx

Panjay. Z. Topagia, BAanu TRPb and APAoT TuPar Z. T.a
aDxpartPxnt of AgriZultural xntoPology, UAP, GTVT, Bangalorx-65
bBio-Zontrol RxPxarZA LaboratorixP, PZI, PriraPanaAalli, Doddaballpur Road, Bangalorx


Abstract: The diamondback moth (DBM), Plutella xylostella(Linnaeus) (Plutellidae: Lepidoptera) is found throughout the world and considered as the most destructive insect pest of cruciferous crops, particularly cabbage, broccoli and cauliflower. An attempt was made to evaluate the effectiveness of the pheromones in combination with need based insecticides under farmer’s field conditions. Trap density study results indicated that the highest number of moths trapped with highest per cent population reduction was recorded in both Bangalore and Kolar with trap density @ 40 traps/acre with a highest mean head weight and yield. The data on mass trapping as a standalone method in season-I revealed that highest number of moths was trapped (675 moths), resulted in 73.96 per cent reduction in larva and pupal numbers over control compared to farmer’s practice (46.11 per cent). Highest number (Mean) of larvae and pupae (3.68) was observed in control plot compared to farmer’s practice plot (1.67) and standalone plot (0.89). In season-II, highest number of moths was trapped (13935 moths) in mass trapping operated plot, which had resulted 51.42 per cent reduction in larva and pupal numbers over control compared to farmer’s practice with only 39.04 per cent population reduction. Highest number of larvae and pupae (5.82) was observed in control plot compared to farmer’s practice plot (3.16) and mass trapped plot (3.04). Highest per cent population reduction of DBM over control was observed in mass trapping as a standalone method compared to farmer’s practice. Pheromone deployed plots had significantly increased Cotesia plutellae population when compared to farmer’s practice. The C: B ratio of pheromone installed plot s in both the seasons was found to be higher compared to farmer’s practice.

Keywords:  Cabbage; Plutella xylostella; Sex pheromone; Water traps; Mass trapping technique; and standalone method.

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*Corresponding author; e-mail: bhanu.krm@gaiaconnect.com
©  CSME , ISSN 0257-9731 





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