Cabbage moth

accumulates in the heart of cabbage, thereby lowering the commercial value of infested crops. Life cycle and appearance of Cabbage moth The adult cabbage [...] to black. In younger instars, the relatively large head capsule is conspicuous. In older instars, the lighter colour of the bands between the body segments [...] from their pupae the female moths lay clusters of 20 to 100 eggs on the underside of leaves or elsewhere within the greenhouse structure. The eggs are initially

Municipality Enschede: Entonem nematodes against oak processionary caterpillar

The Municipality of Enschede started using nematodes for the first time in the spring of 2021 to try to halt the spread of the oak processionary caterpillar [...] caterpillar. The municipality’s built-up area has a total of 22,000 oak trees. In the past, the municipality only extracted the nests. But as Petra Klein Breukink [...] She is the project manager of the oak processionary caterpillar for the Municipality of Enschede. ‘We use Koppert’s nematode product Entonem in locations

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

Two-spotted spider mite

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 p [...] 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 [...] 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

Spider mites and other mites

and the availability of food. Here's an overview of the life cycle of plant mites: Egg: The life cycle begins with the female mite laying eggs. The eggs [...] are often found in colonies on the undersides of leaves, where they feed on the plant's sap. The damage caused by plant mites can result in discolored or [...] on of the leaves, with the affected areas curling and twisting. This damage is caused by the mites feeding on the plant tissue, which disrupts the growth

Spotted Wing Drosophila

unripe fruits. The larval development takes place in the fruit. The larvae pupate either fully or partly in the fruit, or outside the fruit on the ground. [...] tubes which stick out of the fruit. There are three larval instars and in the third instar the larvae are about 3.9 mm long. The pupae of Drosophila suzukii [...] Larval feeding in the fruit leads to fruit tissue collapse. Even if the fruits have not collapsed, the occurrence of larvae within the fruit makes them

Brown soft scale

grey in colour, with dark brown speckles or spots. The colour of the scale darkens as the female ages. The size, shape and characteristics of the female [...] cover the leaves, flowers and fruit of the host and reduce photosynthesis and respiration. Life cycle and appearance of Brown soft scale The scale of the [...] appear that they bear live young, but in fact the first instar nymph emerges from the egg under the mother’s scale. The pink crawlers are active for two or

Adalia bipunctata

maximum 3 bags per tree The dosage of Aphidalia depends on climate and the size of the trees and should always be adjusted to the particular situation. Start [...] yellowish orange in color. They are typically laid in clusters on the undersides of leaves near prey concentrations. Larval stage: The larvae of Adalia bipunctata [...] aphid infestations without the need for chemical pesticides. The predatory beetle Adalia bipunctata is used for the control of the following pests: Aphids

Mottled arum aphid

large amounts of honeydew, which provides an excellent substrate for the growth of black sooty mould. Large areas of mould covering the leaves can reduce [...] continuously producing new generations of females. There is no sexual stage in the life cycle. Wingless females of the mottled arum aphid are shiny whitish [...] green with black cross bands behind the head, broken along the midline, and a large horseshoe-shaped spot on the back of the abdomen. These black markings can

Buxatrap

be used Place the Pherodis pheromone dispensers in the canisters Assemble the trap and fix the canisters in the trap Application Place the trap on a stick [...] species-specific sex pheromone which lures the males of the box tree moth into the trap. Once in the trap they cannot escape and are easy to detect, count and [...] perspectalis ). Crops Box trees Mode of action The Buxatrap needs to be used in combination with Pherodis pheromone dispensers. The dispensers release a specie