Pea leaf miner

percentage of the larvae remain hanging on the leaf and pupate there, sometimes on the upper surface but more commonly on the underside. The late third instar [...] lettuce grown on open ground. Damage symptoms Leaf miners cause damage to plants both directly and indirectly. The most direct damage is caused by the [...] quantity of foliage can get damaged before the harvest is affected. The size of a leaf tunnel depends on the stage of development of the leaf, the species of

Flies

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 tender roots as well [...] Frass deposited on leaves or flowers in ornamental crops, lettuce, and herbs also causes cosmetic damage, and sometimes this can occur on such a scale that [...] growing media, while adults can cause contamination. Effective fly control is essential to maintain healthy and high-quality crops. Biological control of

Feltiella acarisuga

acarisuga is a predatory gall midge highly effective in the biological control of spider mites . This beneficial insect, native to Europe, preys on various [...] Feltiella acarisuga is available at Koppert as Spidend . How to use Feltiella acarisuga The predatory gall midge Feltiella acarisuga is available in plastic [...] cups ( Spidend ). Make a hole in the lid and place the cup on the rock wool slab or directly on the soil Protect against direct sunlight and water Leave

Blueberry aphid

scammelli , is most likely of North American origin and was probably introduced into Europe with plant material. It feeds on blueberries and is a vector of [...] blueberry scorch virus. Damage symptoms Blueberry aphids live in dense colonies on young shoots of blueberry bushes and produce large amounts of sticky honeydew [...] The siphunculi are long and straight. Blueberry aphids overwinter as eggs on blueberry bushes. The fundatrices (founding mothers) emerging from the eggs

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

Horse-chestnut leaf miner

and their size varies form 0.5 mm in the firsts instar up to 3.5 mm in the fourth instar. The pupa is brown and is 2.9-4.5 mm long. The horse-chestnut leaf [...] this time, the damage is very visible. Eventually the mines may cover the entire surface of the leaflets, especially from July on, when the second and third [...] year. Life cycle and appearance of Horse-chestnut leaf miner The adult moth is 4-5 mm long and a rich brown colour with bright white chevrons edged with black

Ephedrus cerasicola

cerasicola Ephedrus cerasicola is a parasitic wasp that belongs to the family Braconidae and subfamily Aphidiinae. This natural enemy is used for the control of [...] Ephedrus cerasicola is used for the control of the following pests: Wide range of aphids The parasitic wasp Ephedrus cerasicola is available at Koppert [...] the crop. Introduction rates typically range from 0.75-1.5 parasitic wasps per m 2 . This is equivalent to one unit every 250-350 m 2 . The parasitic wasps

Large blackberry aphid

The cauda is short and triangular. The aphids overwinter as eggs on blackberry plants. After emerging in spring, the aphids mainly feed on the underside [...] Amphorophora rubi , is very similar to the large raspberry aphid Amphorophora idaei . As both aphid species are host specific the host plant is the simplest method [...] species. The large blackberry aphid is widely distributed in Europe and also established in New Zealand. It only feeds on cultivated and wild blackberries

Common cockchafer

in the larval stage, when it feeds on roots of grasses and clover. The adults feed on the leaves of trees, mainly on oak, maple, beech and plum. Life cycle [...] cockchafer ( Melolontha melolontha) , also known as the doodlebug or May bug is a European beetle of the genus Melolontha, in the family Scarabaeidae. Damage [...] three larval instars, a pupal instar and the adult beetle. The adult beetle is 25 to 30 mm long, with a dark head, black pronotum covered with short hairs

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