Apple rosy aphid

and appearance of Rosy apple aphid Aphids have a complex life cycle, with both winged and wingless forms of adults, and a great variety in colour. They moult [...] grey, with a powdering of white wax. The siphunculi are black and tapered, the cauda is dark, short and triangular. Dysaphis plantaginea lays eggs in autumn [...] autumn in bark crevices on spurs and smaller branches, and on the base of buds of apple trees. The eggs hatch in spring and at first the aphids attack buds

Circular scale

association with the citrus industry. In more northern countries of its range, it occurs in greenhouses. In addition to citrus, it occurs on many other plants [...] aonidum is a tropical species, native to the Oriental region but it has been dispersed widely in tropical and subtropical parts of the world, mostly in association [...] dieback. First signs of an infestation are dark-purple to reddish-brown or black spots with paler margins, on both surfaces of shaded leaves of the host plant

Buckthorn-potato aphid

nasturtii , has a nearly cosmopolitan distribution and is a major pest of potatoes, where it also transmits viruses. It also attacks a large number of other crops [...] problem in potatoes is the transmission of viruses. Life cycle and appearance of Buckthorn-potato aphid Aphids have a complex life cycle, with both winged [...] winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis, with unfertilized viviparous

Beetles

is the largest of all insect orders and displays an enormous variety of form, size and habit. A number of species are a serious pest in crops or stored [...] the order Coleoptera, a well-known group of insects that are easily recognizable on account of their hard wing covers (elytra). With more than 350,000 known [...] The pupae do not make a cocoon and will already display many similarities with the adults. The adult beetles usually possess a pair of membranous wings beneath

Click beetles

brown or light brown with a darker head. Larval development takes 4 to 5 years. When fully grown the larvae pupate in the soil in summer. The adults appear [...] General Click beetles are elongate beetles with a hard exoskeleton, with the head deeply retracted into the thorax. When disturbed they lie on their back [...] propel themselves into the air with a audible click. Hence their name. Their larvae are called wireworms and feed on the roots of many plants. Damage symptoms

Cutworms

the sap flow in the plant. Life cycle and appearance of Cutworms The adults of Agrotis spp. have pale grey to grey-brown forewings with a faint kidney-shaped [...] and hide in the ground during the day. Damage from these instars is usually observed as a cutting of young seedlings, often causing death of the cut seedlings [...] be encountered in the soil in a characteristic, circular position. Pupa are brown to dark brown and 17-25 mm long. Females are capable of laying several

Large raspberry aphid

winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis, with unfertilized viviparous [...] spreading of various raspberry viruses by the aphids. Life cycle and appearance of Large raspberry aphid Aphids have a complex life cycle, with both winged [...] Overwintering eggs of the large raspberry aphid are laid near the base of vegetative canes and hatch in spring. After emerging in spring, the aphids mainly

Fusarium wilt

General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species [...] cycle, is similar to that of most Fusarium species. Fusarium overwinters for many years in the soil and on crop residues of infected plants as chlamydospores [...] be treated effectively with hot water) Use clean substrate in greenhouse crops Disinfect tools, machinery and irrigation water in greenhouses Prevent stress

Tutasan

tomato leaf miner moths in combination with Pherodis Tuta absoluta . Pests Tomato leaf miner moth ( Tuta absoluta ). Crops Tomato. Mode of action The Tutasan [...] Tutasan trap needs to be used in combination with Pherodis pheromone dispensers. The dispensers release a species-specific pheromone which lures the male moths [...] Place the pheromone dispenser in the green canister and attach it to the upper central part of the trap Fill the trap with water to the level indicated

Municipality Doetinchem: Entonem nematodes managing oak processionary caterpillar

biodiversity in the centre, and public opinion is quite sensitive to spraying here. We worked in consultation with distributor Mertens and decided that in spring [...] product Entonem . A major advantage is that the bycatch of other caterpillars is much lower, which is a great benefit to biodiversity. In mid-April, we started [...] Municipality of Doetinchem whose responsibilities include green management. Buha manages some 9000 solitary oak trees withing this municipality. In 2020 the