Sciarid flies

plant material and on algae and fungi present in the soil. They, however, can also feed on root hairs, rootlets, and tender root, stem and leaf tissue. Later [...] habitats and are attracted to a broad range of pathogenic and non-pathogenic micro-organisms for oviposition. Indirect damage is caused by the larvae and adults [...] problematic in cuttings and other young growing plant material. Damage symptoms The larvae of sciarid flies feed mainly on organic remains and the fungi that grow

Tobacco aphid

aubergine, chrysanthemum, and various pot plants and cut flower crops. Damage symptoms Nymphs and adults extract nutrients from the plant and disturb the balance [...] making the crop and its fruit sticky. Black fungal moulds ( Cladosporium spp.) grow on this honeydew, contaminating fruit and ornamental crops and rendering [...] viruses. Life cycle and appearance of Tobacco aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in

Two-spotted spider mite

increased transpiration and reduced plant growth. As damage increases, whole leaves turn yellow, and as more cell sap is removed, the leaf, and eventually the whole [...] tomatoes and cucumbers, as little as 30% damage of the leaf surface can lead to loss of the crop. The nymphs and adults also produce webs, and plants can [...] far the most important species in greenhouses and many outdoor crops. Spider mite damage Larvae, nymphs and adults cause damage to the host plant by feeding

Tobacco whitefly

appearance of chlorotic patches, yellowing, fruit and leaf fall and misshapen fruit. Life cycle and appearance of Tobacco whitefly The tobacco whitefly [...] insecticides and its propensity for the transmission of viruses. Damage symptoms The larvae of whitefly need a lot of protein for growth, and thus consume [...] retarded. In full sunlight, leaves can wilt and fall. Such leaf damage can in turn influence the development of fruit and lead to a reduction in yield. The honeydew

Southern European marshland pyralid

ornamental crop plants, such as roses and gerbera, aquatic plants, vegetable crops such as celery, pepper and lettuce, and weeds. The secretive habit of the [...] crops cultivated in an ebb-and-flow irrigation system. The damage threshold varies considerably according to the crop: in begonia and kalanchoë a relatively [...] as well as life materials. Young larvae feed on the leaves and flowers before they bore and burrow into the stem to emerge at ground level. The caterpillars

Greenhouse whitefly

gerbera and poinsettia. Find solutions for whitefly in your crop Damage symptoms The larvae of whitefly need a lot of protein for growth, and thus consume [...] retarded. In full sunlight, leaves can wilt and fall. Such leaf damage can in turn influence the development of fruit and lead to a reduction in yield. The honeydew [...] the leaves, reducing photosynthesis and transpiration. Viruses can be transmitted. The consumption of plant sap and secreting of honeydew by whiteflies

Long-tailed mealybug

growth and causing deformation and / or yellowing of leaves, sometimes followed by defoliation. The overall effect is a reduction of photosynthesis and therefore [...] Fruit and flowers are also fouled, rendering them unfit for sale, and the reduced level of photosynthesis in the leaves also reduces flower and fruit [...] auxiliary buds and prefers a warm, humid environment. Damage symptoms Mealybugs inflict damage on the crop in various ways: Nymphs and females extract

Tomato russet mite

are slightly curled and acquire a silvery sheen on the underside. Later they become brown and brittle. Badly affected tomato leaves and stems lose their trichomes [...] brown colour, and in serious cases they may snap. The fruit can also be affected, and when this happens in tomatoes, the skin becomes coarse and turns reddish [...] rapid and affected leaves dry out quickly. The damage is first seen on the lower part of the plant and moves upwards as the mites ascend. Life cycle and

Impatiens thrips

ornamental plants it also attacks sweet pepper, cucumber and eggplants. It lives exclusively on the leaves and is often present on weeds in greenhouses. Damage [...] surface tissues and sucking out their contents, causing the surrounding tissue to die. The resulting silver-grey patches on leaves and the black dots of [...] stages are found on the upper- and undersides of the leaf. Pupation occurs on the leaf rather than on the ground. The prepupae and pupae remain immobile on the

Broad mite

both males and females is different to the others and not used for walking. The larvae stay in their larval cuticle for one or two days and then emerge [...] but is slightly smaller and has only three pairs of legs. The emerging adult mite is roughly 0.2 mm long, oval and broad, and pale yellow or yellow-green [...] peppers, but also aubergine, tomato and cucumber. Additionally, many ornamental crops such as azalea, begonia, gerbera and cyclamen are also affected. Outside