• Large blackberry aphid

  blackberries. Damage symptoms High populations of large blackberry aphids can reduce yield. Life cycle and appearance of Large blackberry aphid Aphids have a complex [...] skin, betraying their presence in the crop. Wingless females of the large blackberry aphid are 2.6-4.1 mm long, pale to yellowish green with long antennae [...] complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis

• Pear psylla

  appearance of Pear psylla Adults pear psyllas are 2-3 mm long and orange red to blackish. They have white, longitudinal stripes on the back of the thorax [...] bark of pear trees. The adults become active in spring and start to feed on young leaves and flowers. Eggs are deposited in crevices of the bark of twigs [...] season may affect the harvest of the next year by weakening or killing fruit buds. Pear psyllas excrete large amounts of honeydew. Sooty moulds often grow

• European corn borer

  Damage symptoms Horizontal rows of holes in the young leaves, caused by larval feeding, provide an early indication of European corn borer attack. Later [...] fewer kernels per ear. Life cycle and appearance of European corn borer The adults have a wingspan of 22-32 mm and pale yellowish to olive brown forewings [...] black head of the larva can be seen just before hatching. The eggs are laid in a mass and overlap like tiles on a roof. The average number of eggs per egg

• Orius laevigatus

  systems. Both adults and nymphs of Orius laevigatus are voracious predators, adept at piercing and feeding on the soft bodies of their prey. The predatory bug [...] range from 0.5-10 per m2/release. Releases should be repeated once or twice. Consult a Koppert advisor or a recognized distributor of Koppert products for [...] conditions for use of Orius laevigatus Optimal temperatures for Thripor-L are above 20°C (68°F), lower temperatures slow down the development of Orius laevigatus

• Buckthorn-potato aphid

  transmission of viruses. Life cycle and appearance of Buckthorn-potato aphid Aphids have a complex life cycle, with both winged and wingless forms of adults [...] n distribution and is a major pest of potatoes, where it also transmits viruses. It also attacks a large number of other crops, for instance sweet pepper [...] betraying their presence in the crop. Wingless females of the buckthorn- potato aphid are 1.1-2.4 mm long and bright pale green to yellowish green. The

• Chrysoperla carnea

  honeydew and most will fly out of the greenhouse. Life cycle of Chrysoperla carnea You can recognize the different life stages of the green lacewing, Chrysoperla [...] s. The larvae of green lacewings are particularly effective predators. The green lacewing Chrysoperla carnea is used for the control of the following pests: [...] behaviour of Chrysoperla carnea Lacewing larvae search for prey randomly on the plant. Their efficiency is seriously impaired by the presence of leaf hairs

• FAQ Chrysopa-E

  product it will take 2-4 days. What is the hatching rate of the eggs/what percentage of the eggs actually hatches? Trials show an average of 74% at the moment [...] the volume. 2 Why is it important to avoid clusters of eggs? Risk that hatching larvae start eating each other, decreasing the efficacy of the product [...] vary depending on conditions. What stages of Echinothrips do they eat? All stages except the eggs. What stages of mealybug do they eat? All stages. Is there

• Rice root aphid

  or all of the following symptoms: Wilting; leaves become discoloured and yellow. “Honeydew” deposited on the plant by aphids promotes the growth of mould [...] mould and fungus. Transmission of viral disease between plants. Life cycle and appearance of the Rice root aphid Like most aphids , the rice root aphid appears [...] wingless form is dark olive-green, with a round body 1.4–2.4 mm long. It lives and feeds on the roots of the host plant. The winged form is about 1.8 mm long

• Halyosan

  the trap on top of the conical tube Dosage Finally place the bucket on top of the obstruction ring Timing Place the traps at the edge of the premise, at [...] at a height of 1 to 2 meters Combined use For intensive monitoring place multiple traps with a minimum distance of 20 m between them Notes Never place the [...] Use the Halyosan trap for trapping males and females of Halyomorpha halys in combination with a species-specific aggregation pheromone. Pests Brown marmorated

• Leopard moth

  presence of the caterpillars is indicated by the accumulation of frass and wood particles that comes out of the entry holes. And later by withering of leaves [...] occur in branches or stems of less than 10 cm diameter. Life cycle and appearance of Leopard moth The adults have a wingspan of 45-65 mm and white translucent [...] leaves and die-back of shoots. Infested branches may die and young trees can be killed completely. Trees up to 15 year of age are preferably attacked and the