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

Fall Armyworm

host plant, depending on the crop, the stage of crop development, and the age of the larvae. On maize, young larvae usually feed on leaves, creating a c [...] General The fall armyworm is a polyphagous pest that is indigenous throughout the Americas. Recently, it has been found in Africa too. The caterpillars [...] They have a distinct white inverted Y-shaped mark on the front of the head and four large spots on the upper surface of the last segment. Pupae are reddish

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

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

Cotton bollworm

individually on young shoots near buds, flowers, fruits or on leaves. They are almost spherical with a flattened base and a diameter of about 0.5 mm. They [...] fruit crops. Among greenhouse crops, tomato is particularly affected. Damage symptoms First instar larvae feed on soft leaves, creating small holes. When they [...] to reddish-brown with dark spots. In later instars the head is mottled, and the body is marked with three prominent longitudinal dark bands with numerous

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

Macrolophus pygmaeus

voracious predators, capable of feeding on various pest species. With its effectiveness in pest control and minimal impact on non-target organisms, the natural [...] feed on whiteflies, it also eats aphids , spider mites , moth eggs and small caterpillars , as well as the larvae of leaf miners . When the bug is present [...] the control of these pests. Although plant sap is necessary for Macrolophus pygmaeus to develop well, it is insufficient for full development of a population

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

nymphs and adults cause damage to the host plant by feeding on plant sap. They mainly occur on the underside of leaves where they pierce the cells and suck [...] which the mites live. The webbing and spotting on the leaves affect the appearance of the crop. This is of particular concern in ornamental crops. Life [...] other mite species can rapidly infest greenhouse and field crops, feeding on plant cells and causing leaf discoloration, reduced photosynthesis and lower

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