• Large raspberry aphid

  to reduce yield by direct feeding damage. The major problem is the spreading of various raspberry viruses by the aphids. Life cycle and appearance of Large [...] antennae, legs and siphunculi. The cauda is short and triangular. Overwintering eggs of the large raspberry aphid are laid near the base of vegetative canes [...] General The large raspberry aphid, Amphorophora idaei, is the most important aphid species found on raspberries in Europe. It only feeds on raspberry.

• About bumblebees

  Worker bees forage for both pollen and nectar to provide resources for the brood as well as perform maintenance jobs on the nest. As the nest continues to [...] safer for you and your employees as they are much less aggressive than honeybees Production of bumblebees The natural life cycle of the bumblebee is copied [...] throughout the winter season. Before hibernation, the new young queens will leave the old nest and mate with drones. As temperature rises and the spring season

• Fusarium spp.

  This species is the only Fusarium that actually grows inside the vascular system of the host plant and spreads upwards inside the plants. The other species [...] Fusarium wilt ) is the species that causes vascular wilt. Initially, the leaves turn yellow and wilt, mostly on one side of the plant. Finally, the whole plant [...] roots at the root tip, or in small wounds, for example where lateral roots branch off the tap root. F. oxysporum grows inside the roots towards the foot of

• Apple rosy aphid

  and on the base of buds of apple trees. The eggs hatch in spring and at first the aphids attack buds, spur leaves and rosette leaves. Later the infestation [...] General The rosy apple aphid, Dysaphis plantaginea , is a serious apple pest. It is widespread in Europe and also occurs in Africa, North and South America [...] to dark bluish grey, with a powdering of white wax. The siphunculi are black and tapered, the cauda is dark, short and triangular. Dysaphis plantaginea lays

• 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 [...] caterpillar is the oscillatory swaying movement of the anterior end. The caterpillars are nocturnal. When the caterpillar is full-grown, it will form a greenish [...] Europe for the winter months. The moths can fly 2,000 to 2,500 km. In temperate climates, the species produces one to two overlapping generations, and it

• Oleander aphid

  aphids can easily be seen on the shoots of the host plants. The damage caused by the aphid colonies is mainly aesthetic due to the large amounts of sticky honeydew [...] rather than eggs and that the progeny are clones of the adult female. The nymphs feed in colonies on the shoots at the top of the plant. Nymphs progress through [...] General The oleander aphid, Aphis nerii , sometimes also called the milkweed aphid, is a common pest of several important ornamental plants in the families

• Oak processionary moth

  allergenic for months. From the 5th instar on, the larvae start building silken nests at the base of lower branches, on the trunks or at the base of the trunks [...] of this moth refer to the behaviour of the larvae to form long processions. The moth is native to central and southern Europe but is now present in almost [...] reducing the viability of oak trees. However, this is usually less of a problem as the trees normally recover from this. More important is the health risk

• Vine mealybug

  from the pupa. The male is smaller (1 mm), dark orange in color with long tail filaments and transparent wings and has no mouthparts. The female is larger [...] General The vine mealybug Planococcus ficus belongs to the family Pseudococcidae, and is also known by the names Mediterranean vine mealybug and Grapevine [...] defoliation. The overall effect is a reduction of photosynthesis and therefore the yield. Flowers and fruit often drop off. Plant sap is rich in sugars

• Treatment of bumblebee stings and allergies

  stinger, as is the case with honeybees and wasps. Drones cannot sting. The stinger is a weapon for defence. When a bee stings, some venom is injected into [...] epinephrine into the thigh in the case of a sting. Tests and treatments are available at the Allergology department of the RdGG (Dr de Groot) at the Diakonessehuis [...] poster showing the images is available from Koppert. This poster is also available as a download (URL). Tip: Add the contact information for seeking medical

• Spidex Vital: Your Vital partner in spider mite control

  predatory mite formed the foundation of our spider mite control. Over time it grew to be one of the most important products for our growers. As the result of [...] spider mite from the field to develop the eggs. This will increase the population in your crop. Download trial results Proof of predation The Phytoseiulus [...] travelling the given distance. In a bottle of Spidex Vital a more diverse population composition is present, so when applied in hotspots the adults are