Potato aphid

from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation [...] to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky [...] characteristic of the potato aphid and is particularly visible in the nymphs. Immatures have a light dusting of whitish-grey wax. The aphids instantly

Western flower thrips

finally the adult insect. The eggs of the western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft parts of stalks [...] disturbed. In the adults both pairs of wings are fully developed. Damage symptoms Thrips cause damage to plants by piercing the cells of the surface tissues [...] causing the surrounding tissue to die. The resulting silver-grey patches on leaves and the black dots of their excreta indicate their presence in the crop

Limonica strong contender against persistent thrips

when temperatures fall below or rise above that range. That said, it’s important to keep in mind that the hatching rate of Limonica eggs is low in hot, dry [...] establish early and exert pressure on thrips populations before they peak. The potential of Limonica against other thrips Although most data currently focuses [...] biocontrol agents like, in case of sweet pepper, Orius laevigatus. As new thrips species continue to challenge growers worldwide, the need for effective and s

About bumblebees

throughout the winter season. Before hibernation, the new young queens will leave the old nest and mate with drones. As temperature rises and the spring season [...] for the brood as well as perform maintenance jobs on the nest. As the nest continues to develop, the queen will not leave it. She will be inside the nest [...] they are much less aggressive than honeybees Production of bumblebees The natural life cycle of the bumblebee is copied under laboratory conditions at our

Black vine weevil

It belongs to the family Curculionidae. Damage symptoms The major damage is caused by the feeding of the larvae on the roots. After the roots have been [...] but reduces the value of ornamental plants. Life cycle and appearance of Black vine weevil The life cycle of the black vine weevil consists of an egg, 6 [...] temperate climates, the small (0.7 mm diameter), spherical white eggs are laid from the beginning of July until around the end of October. The larvae that hatch

A life-long commitment to help growers thrive with sustainable growing practice

Preparing for the future ‘The future holds many challenges and one of them is the severe reduction in the use of chemical agents. In fact, a lot of them are [...] vital role during the introduction and rollout.’ Making biocontrol the norm In the Netherlands, the use of biocontrol has become the norm when it comes [...] strategies in horticulture. We have the most experienced consultants in the industry with years of practice in the field. We know our natural products

Two-spotted spider mite

to the host plant by feeding on plant sap. They mainly occur on the underside of leaves where they pierce the cells and suck out the contents. The empty [...] on the leaves affects the appearance of the crop. This is of particular concern in ornamental crops. Life cycle of two-spotted spider mite Two-spotted [...] yellow, and in many plants the damage can also be seen on the upper surface of leaves as small yellow dots. The destruction of cells results in reduced

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Additives

José Eduardo Belda and the transformation of biocontrol - Original Stories about predatory mites