Trichogramma

Trichogramma are tiny insects of less then one millimeter long that are classified in the Hymenoptera order.

Trichogramma pose no threat or danger to human health and their usage does not require any specialized machinery. Also, their introduction can be made in almost every kind of weather condition.

Trichogramma are very selective insects and often target only one pest specie. Furthermore, fields not treated with chemical pesticides can provide the establishment of other beneficial insects and natural enemies.

Trichogramma is an efficient and environmentally friendly alternative for controlling pests of many crops.

How does it work

At application time, trichogramma are in the form of parasitized eggs of an artificial host: Mediterranean flour moth (Ephestia kuehniella). The parasitized eggs are glued inside a “trichocard", a kind of protected cardboard hanging card used to shield trichogramma from adverse weather. Trichocards are introduced while pests are laying eggs (see diagram (1)). The day after the introduction, the trichogramma emerge and mate (2). Females then fly in search of pest eggs. When a female finds an egg she lays one of her own eggs inside the pest egg (3). The trichogramma egg will quickly hatch into a larva that will feed on the inside of pest egg, eventually turning it black. In this way, the pest egg is killed before it hatches into a larva. About 10 days later a new trichogramma emerges instead of the pest, and the life cycle repeats itself (5).