• Yellow rose aphid

  ornamental crops. At the same time, photosynthesis in the leaves is reduced, affecting production. The yellow rose aphid is also a vector of several viruses [...] and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed [...] South America. It attacks plants of the family Rosaceae and is a pest of strawberries and roses. Damage symptoms The yellow rose aphids usually live in

• Aphilin

  emerges through a hole at the rear of the mummy. The first mummies are noticed in the crop around 2 weeks after the first introduction. Host feeding also [...] their eggs in aphids . The next generation of parasitic wasps develops inside the aphid, which converts into a leathery mummy. The adult parasitic wasp emerges [...] introduction site for a few days Dosage The dosage of Aphilin depends on climate, crop and aphid density and should always be adjusted to the particular situation

• Greenhouse whitefly

  rods. This is called the pupa stadium and these pupae are found on the oldest leaves. The adult emerges from the pupa via a T-shaped fissure. The adult whiteflies [...] quantities. The damage that whiteflies cause to a crop is the result of sucking out the sap from the plant leaves and secreting honeydew. This can have the following [...] consequences: If the population is very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In full

• Silver-Y moth

  feature is the irregular white mark. The hindwings are brown with a broad, dark band along the margin. The body is light brown and hairy, the antennae [...] with a black lateral line. The body has stiff hairs and is usually greenish with a light lateral line. Below the lateral line there is a dark dot on each [...] Damage symptoms The larvae feed on leaves, causing typical caterpillar damage. Feeding damage includes feeding on the leaf epidermis and on the petiole, sk

• Hemispherical scale

  4.5 mm. The young nymphs are white to yellowish, more oval in form and with a raised H-pattern on the dorsal surface. All instars live on the underside [...] light yellow flecks. The high, rounded form and smooth surface distinguish the species from most other soft scales. The size depends on the host plant and can [...] General The hemispherical or helmet scale, Saissetia coffeae , occurs widely in tropical regions and in greenhouses throughout the world. It is a severe

• Tree specialist Wolterinck: Control of oak processionary caterpillar with Entonem

  witnessed the effect of Koppert’s nematode product Entonem on the oak processionary caterpillar . ‘We’ve been using nematodes for years. The product is our preferred [...] advocate Wolterinck BV is a staunch advocate of Entonem against the oak processionary caterpillar. Ivo de Groot continues, ‘The product has a guaranteed firm [...] Wolterinck BV in Beltrum, the Netherlands, is a specialist in tree care and weed control and works on behalf of local authorities and governmental bodies

• Tomato looper

  white marks on the forewing that sometimes overlap each other. The hindwings are brown. The body is brown and hairy and, when at rest, the hairy dorsal [...] throughout the crop, on the lower and upper surfaces of leaves. The caterpillar passes through 6 instars. It has a green head capsule and a yellowish-green [...] through the leaves, which make them appear skeletonized. The last two instars may eat the entire leaf except for the midrib or other large veins. On tomatoes

• Cutworms

  separately or in batches on the ground, or on the plant close to ground level. The larvae are yellowish when hatching with a dark head capsule and prothoracic [...] marginal stripe. The wingspan is about 40-55 mm and the dorsal thorax is covered with close-lying hairs. The eggs are white at first but rapidly turn darker [...] species are for instance the black cutworm Agrotis ipsilon and the turnip moth Agrotis segetum . The larvae of these moths usually feed on roots and plant parts

• Anso-Mite

  by turning around the bucket a few times Carefully sprinkle on the leaves Make sure the material remains on the leaves for at least a few hours after releasing [...] intervals or until control is achieved. Consult a Koppert advisor or a recognised distributor of Koppert products for advice on the best strategy for your [...] Amblyseius andersoni is effective at temperatures above 14°C/57°F. Optimum temperatures are between 20 and 28°C (68 and 82°F). A. andersoni is sensitive to relative

• Aphidalia

  aphids . Mode of action The ladybirds feed on aphids and lay eggs in the aphid colonies. After emergence, the larvae also feed on aphids. Visual effect Aphids [...] 3 bags per tree Dosage The dosage of Aphidalia depends on climate and the size of the trees and should always be adjusted to the particular situation. Start [...] bag. Carrier Buckwheat hulls. Application Open the bag and attach it to the tree near the first branch with a nail or wire stitch Apply 1 bag per 25 cm stem