organic farming
அங்கக வேளாண்மை :: பூச்சி மேலாண்மை

தோட்டக்கலைப் பயிர்களின் பூச்சி மேலாண்மை

Pests of Tomato

Helicoverpa armigera

  • Collect and destroy the infected fruits and grown up larvae.
  • Grow less susceptible genotypes Rupali, Roma, Pusa red plum.
  • Grow simultaneously 40 days old American tall marigold and 25 days old tomato
  • seedling at 1:10 rows to attract Helicoverpa adults for egg laying.
  • Setup pheromone trap with Helilure at 15/ha and change the lure once in 15 days.
  • Spray HaNPV at 500 LE/ha along with cotton seed oil 300 g/ha to kill larvae.
  • Release Chrysoperla carnea at weekly interval at 50,000 eggs or grubs / ha from 30
  • days after planting.
  • Six releases of T. chilonis @ 50,000/ha per week coinciding with flowering time and
  • based on ETL.
  • Spray B. thuringiensis 2 g/lit
  • Do not spray insecticides after maturity of fruits.
  • Encourage activity of parasitoid Eucelatoria bryani, Campoletes, Chelonus etc.,

2. Leaf miner

  • Spray NSKE 3%
  • Collect and destroy mined leaves

3. Spodoptera litura

  • Plough the soil to expose and kill the pupae.
  • Grow astor along border, irrigation channel as indicator or trap crop.
  • Flood the field to drive out hibernating larvae.
  • Set up light trap at 1/ha or pheromone trap at 15/ha with pheroclin SL lure.
  • Destroy egg masses and grown up larvae.
  • Spray SNPV at 250 LE along with teepol 1ml/lit in evening hrs.

4. Whitefly

  • Uproot and destroy the diseased leaf curl plants
  • Remove alternate weed hosts.
  • Use  irrigation judiciously.
  • Use yellow sticky trap to attract and bill insects.
  • Spray FORS 2% / neem oil 0.5% along with teepal 1 ml/lit.
  • Encourage activity of parasitoids Eretmocerus mesii and predator coccinellids,
  • Brumus and Chrysoperla.

5. Thrips

  • Collect and destroy the damaged leaves and twigs and uproot the diseased plants.
  • Use yellow sticky traps at 15/ha to attract and kill insects.
  • Release first instar larvae of Chrysoperla carnea @ 10,000/ha and encourage
  • coccinellid predator.
 
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