Two-spotted spider mite

leaves affects the appearance of the crop. This is of particular concern in ornamental crops. Life cycle and appearance of Spider mite Two-spotted spider [...] mite ( Tetranychus urticae ) is a pest of many crops throughout the world. Despite their small size, they are capable of very rapidly doing severe damage [...] capacity. There are more than 1200 species worldwide and many of them are major crop pests. The two-spotted spider mite ( Tetranychus urticae ) is by far

Beetles

largest of all insect orders and displays an enormous variety of form, size and habit. A number of species are a serious pest in crops or stored products [...] group of insects that are easily recognizable on account of their hard wing covers (elytra). With more than 350,000 known species, Coleoptera is the largest [...] your crop Life cycle of beetles Beetle damage Both larvae and adults of beetles can cause damage to crops. The larvae of some species feed on growing tips

Flies

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 [...] 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 and [...] problem due to their large number. Larvae of flies of the family Keroplatidae (mainly Lyprauta sp.) can cause damage in potted orchids. The Spotted Wing Drosophila

Tobacco aphid

) probably evolved from the peach potato aphid in the Far East and is a key pest of tobacco crops in both the United States and South America. The tobacco [...] tobacco aphid ( Myzus persicae subsp. nicotianae ) is also encountered in a range of crops in greenhouses, such as sweet pepper, aubergine, chrysanthemum [...] therefore need 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

Nutari

montdorensis ) in the beginning of the season and at low prey densities. Mode of action When density of the target pest is low and there is no alternative [...] available in the crop Nutari can be provided as alternative food source for predatory mites . This will ensure a standing army of predatory mites in the crop [...] Large heaps of carrier material may cause leaf damage, so make sure the material is distributed as a thin, even layer Dosage The dosage of Nutari depends

Vine mealybug

effect is a reduction of photosynthesis and therefore the yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low in proteins. In order [...] an adequate intake of protein, mealybugs must therefore ingest large quantities of sap, getting rid of the excess sugars in the form of honeydew. Charac [...] have 18 pairs of wax rods round the edge of the body, and two slightly longer 'tail filaments' that project at the posterior end. There is often a darker

Beneficial nematodes

group of worms belonging to the phylum Nematoda. Nematodes are characterized by their unsegmented, cylindrical bodies, and they come in a variety of sizes [...] microscopic to several inches in length. Nematodes play various roles in ecosystems. Some are free-living, feeding on organic matter in soil or water, and are [...] plants, insects, animals, or humans. There are about 25.000 named species, but estimated numbers of species are in the millions. Nematodes are also referred

American serpentine leaf miner

areas this can lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting vegetable crops, however [...] sweet pepper, pea, bean and potato. In greenhouses, it is mainly found on gerbera and chrysanthemum. Today the insect is widespread across the whole world [...] with ornamental crops, this is usually of less significance. Seedlings and young plants can be completely destroyed as a result of the direct damage caused

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 [...] Biological control of spider mites and other mites uses a range of natural enemies that target different developmental stages of the pest: Predatory mites [...] are capable of causing severe damage very rapidly due to their great reproductive capacity. There are more than 1200 species worldwide, many of them are common

Aphids

reproduction is asexual, the progeny of a single female is genetically identical to the mother. In other words, they are clones. Because there is no genetic [...] aphids have two pairs of wings, one of which is much larger than the other. For a large part of the season an aphid population consists of viviparous females [...] during each of these moults, betraying their presence in the crop. There are two types of aphid species: those that change to other host plants in the winter