• European red mite

  originates from Europe (as can be seen from the common name, European red mite) but is now distributed in all important apple growing areas of the world. European [...] European red mite The European red mite feeds mainly on the undersides of leaves but moves to upper leaf surfaces when the lower side becomes crowded. Contrary

• Black bean aphid

  plant viruses. Infestations start usually at the younger parts of the plant but can spread all over the plant. Nymphs and adults extract nutrients from the [...] Retarded growth and defoliation reduce yield. Plant sap is rich in sugars, but has a low protein content. Aphids therefore need to extract large quantities

• Black vine weevil

  edge. This damage is usually not a problem in vegetables and fruit crops but reduces the value of ornamental plants. Life cycle and appearance of Black [...] covers are grooved and fused with the body. Therefore, vine weevils cannot fly but can walk very well. They are strictly nocturnal; during the day they hide [...] they feed on the roots. They are legless, roughly 1 mm long at hatching, but grow to approximately 12 mm. A larva is often curled into the typical C-shape

• Obscure mealybug

  ) (formerly known as Pseudococcus affinis) originates from South America, but can now be found in many parts of the world with a temperate climate. It has [...] has a very similar appearance to the citrus mealybug (Planococcus citri) , but its body is covered with a thicker layer of wax, the filaments around the [...] the yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low in proteins. In order to gain an adequate intake of protein, mealybugs

• A legacy of sustainability: Stolk Brothers and Koppert’s shared vision

  March 17, 2025

  entirely free of chemical pesticides. “It’s achievable, but we need full commitment—not just from growers, but also from policymakers in The Hague and Brussels [...] thought we were crazy, calling us the ‘guys with bugs ,’” Pieter recalls. “But fast forward 30 years, and now you can’t imagine horticulture without biological [...] easy to work together,” Pieter explains. “Koppert has grown tremendously, but it remains a family business at heart—focused on quality, innovation, and

• Strawberry

  plays a critical role in enhancing fruit set and yield in strawberry crops, but also contributes to integrated pest management (IPM) practices. The use of [...] IPM strategies not only minimises the use of harmful chemical pesticides but also promotes the long-term resilience of the crops, ensuring the production

• Conifer

  growth occurs in the development of conifers. Conifers are usually trees, but few varieties develop as shrubs.

• Blackberry

  species belonging to the genus Rubus that is part of the family of Rosaceae , but also from hybrids within the Rubus subgenus, and hybrids between the Rubus

• Yellow rose aphid

  yellow rose aphid , Rhodobium porosum , is probably of North American origin but is now widely distributed in Europe, North Africa, parts of Asia and South [...] Retarded growth and defoliation reduce yield. Plant sap is rich in sugars, but has a low protein content. Aphids therefore need to extract large quantities

• Beetles

  membranous wings beneath the wing covers. Many species are very capable fliers but others cannot fly at all. Beetle damage Both larvae and adults of beetles [...] some species feed on growing tips and roots or chew and bore into stems, but in other species also feed on leaves. Adult beetles cause damage by feeding