• Spider mites and other mites

  such webs in which the mites live. The webbing and spotting on the leaves affect the appearance of the crop. This is of particular concern in ornamental [...] 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 [...] 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

• Thripor-L

  and/or in application boxes (Dibox) Apply in groups of at least 50 insects in order to establish a population and encourage mating Make sure the material [...] suck out the contents. Visual effect The predatory bugs actively search for prey. With their piercing mouthparts, they extract the contents of their prey [...] should always be adjusted to the particular situation. Start introduction as soon as the first thrips are detected in the crop. Introduction rates typically

• Thrips

  a later stage, the empty cells become desiccated and the adjacent cells turn brown. The vigour of the plant is also reduced by loss of chlorophyll. With [...] cause damage in green-houses belong to the family Thripidae. Thrips damage Thrips cause damage to the plant by piercing the cells of the surface tissue [...] 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

• Flies

  both directly and indirectly. The type of damage depends on the species of the flies. Direct damage is the immediate result of larvae feeding on root hairs [...] shore flies are mainly a problem in greenhouses. Their larvae live in the ground and prefer moist substrates that is rich in organic matter. Although they [...] their large number. Larvae of flies of the family Keroplatidae (mainly Lyprauta sp.) can cause damage in potted orchids. The Spotted Wing Drosophila has

• Coffee

  beans are the source of one of the most popular beverages in the world. They are in fact, not actual beans, but the seeds of Coffea , a genus of flowering [...] It is a member of the Rubiaceae family and grows on shrubs native to tropical and southern Africa and tropical parts of Asia. Grown widely in the tropics [...] ‘cherries’. These contain two seeds, the coffee beans. One of the most widely grown coffee crops is the Coffea arabica which bears fruit only after three

• 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

• Southern blight

  lesions on the stem. As the damage progresses, it causes darkening and rotting of the stem, resulting in the destruction of the cortex and the main root [...] resulting in longevity of more than five years in the soil, in a dry environment. Both the sclerotia and the mycelium are a source of inoculum, as the fungus [...] resulting in the destruction of the cortex and the main root. In highly humid conditions, white mycelium growth is observed on the plant’s stem, which may

• Predatory mites

  chemical pesticides. Koppert is the pioneer in the development of predatory mite solutions, starting in 1967 with the rearing of the predatory mite Phytoseiulus [...] knowing the target pest is crucial. Scouting is essential to know where the pest is, how severe the infestation is and to identify the pest. Select the right [...] appropriate quantity of predatory mites needed based on factors such as the size of your crop and the severity of the pest infestation. Distribution: There are

• Fusarium wilt

  inside the vessel system of the host plant and spreads upwards inside the plants. The other species are dispersed upwards on the outside of the plant. [...] side of the plant. Finally, the whole plant wilts. Other symptoms are brown discolouration of the xylem vessels which can be seen when the stems are cut [...] blight in cereals and post-harvest decay. Fusarium oxysporum is the species causing vascular wilt. First the leaves turn yellow and wilt, mostly on one side

• Caterpillars

  to crops. The most harmful caterpillars that occur in greenhouses belong to the Noctuidae (the noctuid or owl moths), which is the largest of all lepidopteran [...] greenhouse crops is the leafroller family, the Tortricidae. The name ‘leafroller’ refers to the fact that the caterpillars often live in rolled-up leaves [...] control. In addition to consumption of the plant, caterpillars also spoil the plant with the large quantities of frass they leave behind. Life cycle of caterpillars