Biological and ecological products for pests control in greenhouses and fields

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Green lacewing (Chrysoperla carnea)

Green lacewing predator of aphids

Description


Chrysoperla carnea, commonly called green lacewing or aphid lion, is a small insect native to Canada, belonging to the Neuroptera family. Our green Lacewings are produced in Ontario by GrowLiv.

Adults are delicate insects, 2 cm long. They are pale green, with translucent oval wings and long antennae. The eggs are laid on plants, generally near aphid colonies. Each egg is attached to a thin stem (pedicel) 1 cm long. The larvae are predatory, with strong mandibles (mouthparts) that enables them to seize their prey.

Adults are active at dusk and feed on pollen, flower nectar and aphid honeydew. Their larvae on the other hand feed on thrips, whiteflies, moths, beetles, eggs, small larvae, mealy bugs, psyllids, and mites. These little monsters have large hollow hooked jaws that pierce into the prey on contact and secrete digestive enzymes that melts it into its exoskeleton, sucking up the prey’s body juice.

The number of lacewings needed for effective control depends on the pest population and climatic conditions.These insects are extremely effective under certain conditions, especially in protected or enclosed areas such as a greenhouse.

Targeted crops



  • Greenhouse vegetables (tomatoes, cucumbers, sweet and hot peppers, lettuce, etc.)
  • Vegetables grown outdoors (celery, cruciferous vegetables, lettuce, peppers, potatoes, etc.)
  • Orchards
  • Ornamental plants
  • Small fruits (strawberries, raspberries, grapes, etc.).
  • Trees, bushes and shrubs (rose bushes, apple trees, arrowood, etc.)

Targeted pests



  • Melon aphid (Aphis gossypii)
  • Foxglove aphid (Aulacorthum solani)
  • Green peach aphid (Myzus persicae)
  • Potato aphid (Macrosiphum euphorbiae)
  • Other aphid species
  • Long-tailed mealybugs (Pseudococcus longispinus)
  • Whiteflies (greenhouse and tobacco whiteflies)
  • Leafhoppers
  • Soft-bodied insects (caterpillars and nymphs)
  • Thrips and invertebrate eggs

Life cycle


  • The life cycle varies with temperature (4 weeks to 3 months).
  • The optimum conditions are a temperature of 20 ° C to 31 ° C and a relative humidity of 30% or more.
  • The eggs are laid on plants, generally near aphid colonies.
  • The females lay their eggs on the leaves near aphid colonies.
  • Larvae emerge from the eggs after 3 to 6 days.
  • One larva can consume 100 to 600 aphids during its development.
  • The larval stage lasts 15 to 20 days.
  • Pupation occurs on a leaf, the larvae built a small white cocoon hairy. Adults emerge from the cocoon after 10 to 14 days.

Formats



Egg stage

  • Available in plastic receptacles containing 3 000, 5 000 or 10 000 eggs in capsules.
  • Available in plastic receptacles containing 2 000 eggs on jute yarn.

Larval stage

  • Available in plastic receptacles containing 500, 1 000 or 2 000 larvae in capsules.

Introduction rate



Larval stage
Cultures Quantity Surface Frequency Duration
Low infestation 30 larvae per m 2 per 14 days as needed
Moderate infestation 50 larvae per m 2 per 7 days as needed
Severe infestation 100 larvae per m 2 per 7 days as needed
Egg stage
Cultures Quantity Surface Frequency Duration
Low infestation 3 eggs per m 2 as needed as needed
Moderate infestation 5 eggs per m 2 per 7 days 2-3 times
Severe infestation 10-20 eggs per m 2 per 7 days 2-3 times
Outside crops 5000 eggs per acre per 7 days 2-3 times

Targeted pest


Targeted production




Recent news


Did you know


chrysope

The adult and larva of convergent lady beetle can eat 10 to 170 aphids per day.

Source : Réseau de surveillance du puceron du soya, carnet de champ du dépisteur (2010).