Integrated pest management of Diamondback Moth in cole crops

  • The diamondback moth, Plutella xylostella is one of the most destructive pests of cole crops like Cauliflower, cabbage and broccoli. The caterpillar of this insect eats away the green matter of the leaves and only white membrane remains at the eaten site which later turns into pores and gradually the damage starts appearing on the whole plant. This pest can reduce the marketable yield by 50-80%. Its outbreak is more visible in the months of September to October and March to April. 

Management: 

  • Grow two rows of mustard after every 25 rows of cabbage/ cauliflower as a trap crop at the time of planting. One row of mustard is sown 15 days before cabbage planting and the second row 25 days after planting of cabbage. The first and last rows of plots are also mustard. 

  • Installation of light traps for adult DBM @ 3-4 traps / acre.

  • Spraying with Bacillus thuringiensis 100 gm or Spinosad 45 % SC 75 ml per acre and repeating it at 10- 15 days intervals. 

  • Chemical control- Spray at Emamectin Benzoate 5% SG 100 gm or Chlorantraniliprole 18.5 % SC 60 ml per acre. 

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