• Spidex Vital lives up to its promises

  ‘As the old crop is always cleared away, I start from scratch each time and have to build up the necessary populations three times. This is always a critical [...] tense moment on cucumber farms like mine. And as spider mites can cause real problems in this type of crop, an even better beneficial is always welcome [...] population develops more rapidly.’ A sense of calm on the farm The increased effectiveness of Spidex Vital is a major advantage for Sjaak van Dijk. ‘As already

• Mealybugs and scales

  mealybugs and scales is essential to maintain healthy and marketable crops. Biological control of mealybugs and scales relies on natural enemies and monitoring [...] scales feed mostly on leaves and twigs, causing discolouration of foliage, stunting, and in extreme cases eventual defoliation. However, it is mainly the great [...] of the sooty mould that grows on it. Ants are also attracted by the honeydew. In fact, the honeydew with its sooty mould is usually the first sign of the

• Woolly apple aphid

  General The woolly aphid, Eriosoma lanigerum , is a serious worldwide apple pest. It is probably of North American origin and has been distributed to other [...] siphunculi are pore-like and the cauda is small. Eriosoma lanigerum overwinters as “naked” nymphs (without wax covering) on apple trees sheltering in cracks [...] sticky “wool” can be seen, mainly on spurs and branches. Many generations occur during the summer months, also on new growth. Water shoots arising from

• Anagyrus vladimiri

  sexual dimorphism: the female is about 1.5-2 mm in length and brown, with distinctive black and white banded antennae. The male is 0.8 mm in length and black [...] Anagyrus vladimiri Anagyrus vladimiri is a parasitic wasp belonging to the Encyrtidae family. This parasitic wasp is particularly effective for mealybug [...] products for advice on the best strategy for your situation. Best conditions for Anagyrus vladimiri The parasitic wasp Anagyrus vladimiri is most effective

• Tobacco aphid

  East and is a key pest of tobacco crops in both the United States and South America. The tobacco aphid ( Myzus persicae subsp. nicotianae ) is also encountered [...] excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky. Black fungal moulds ( Cladosporium spp.) grow on this honeydew [...] in colour. When reproduction is asexual, the young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. Aphids

• Glasshouse potato aphid

  reproduction is asexual, the young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. When reproduction is sexual [...] deformations in the growing tip of the plant. Precisely where the plant is pierced is unimportant. The piercing of the lower leaves in the crop can cause deformed [...] abdomen that has pale to dark transverse bands. The body shape is similar to wingless females, but is 2.0-3.0 mm long. The glasshouse potato aphid manifests both

• Privacy Statement

  relationship with you. Cookies We use cookies on our website. A cookie is a small text file that is stored on your computer by your browser when you visit [...] Google on servers in the United States. Google uses the information from Google Analytics to track how our site is used, to compile reports on our website [...] subject; processing is necessary to comply with a statutory obligation; processing is necessary for the performance of a contract; processing is necessary for

• Tomato leafminer

  family of Gelechiidae . It is oligophagous, feeding mainly on Solanaceae species . The main host is tomato but it also feeds on other solanaceous crop plants [...] the crown of the fruit and even inside the fruit itself. On leaves, the larvae only feed on mesophyll tissues, leaving the epidermis intact. Fruits can [...] colouration on the dorsal surface. Caterpillars can temporarily be found outside the leaf mines or fruit. Pupation takes place in the soil or on the surface

• Western flower thrips

  is) is currently the most damaging thrips species in many greenhouse crops. The western flower thrips (Frankliniella occidentalis) can be found on a wide [...] including many vegetable and ornamental crops in greenhouses, and on various weeds. It is an especially significant pest in cucumber, sweet pepper, eggplants [...] silver-grey patches on leaves and the black dots of their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of c

• Spider mites and other mites

  a magnifying glass is needed to detect them. Plant mites are often found in colonies on the undersides of leaves, where they feed on the plant's sap. The [...] with the affected areas curling and twisting. This damage is caused by the mites feeding on the plant tissue, which disrupts the growth and development [...] a range of damage, depending on the species and the host plant. They often cause yellow-brown spots and discoloration on the leaves. Some species induce