Consumers
and parasitic wasps are released to combat harmful insects, in the same way as they do in the wild. Koppert supplies various species of parasitic wasps, [...] form fruit before the tomato can actually start to grow. In nature, insects and other animals take care of the pollination and therefore the formation of fruit [...] horticultural crops. The bumblebee is a close relative of the honeybee. In 1987, it was established that bumblebees could prove extremely useful in greenhouses