• Leaf miners

  quantity of foliage can be lost before the harvest is affected. The size of a leaf tunnel depends on the stage of development of the leaf, the species of host [...] belong to the order Diptera (the true flies ) and form the family Agromyzidae. This is a family of small flies whose larvae tunnel into the leaves of plants [...] directly and indirectly. The most direct damage is caused by the larvae mining the leaf tissue which can lead to desiccation, premature leaf-fall and cosmetic

• Glasshouse potato aphid

  deformations in the growing tip of the plant. Precisely where the plant is pierced is unimportant. The piercing of the lower leaves in the crop can cause deformed [...] length exceeds that of the body. The legs are also long, there are two distinctive dark green spots on the abdomen at the base of the cornicles. Alate (winged) [...] There is no alternation of hosts, and the two types of life cycles occur on the same host plant. The aphid can overwinter not only in greenhouses, but

• Aphidius colemani

  typical of the Aphidiidae. First the host is examined by drumming with the antennae. This gives the wasp the information about whether the aphid is the right [...] of the aphid population by the presence of the parasitic wasp also has an effect: the alarmed aphids secrete a warning substance, which affects the entire [...] Aphidius colemani The parasitic wasp is available in a bottle ( Aphipar ). Spread the material on rock wool slabs or in Diboxes Make sure the material remains

• Cottony cushion scale

  months. After leaving the egg sac, the crawlers settle along the midribs and veins of the leaves. The next two instars migrate to the larger twigs and branches [...] addition, the copious quantities of honeydew produced by the scales coat the leaves, blocking the stomata and impeding gas exchange. Sooty moulds grow on the [...] running lengthwise over the surface. The ovisac may reach the same length as the body, giving an overall combined length of up to 20 mm. The 'females' are actually

• Leafhoppers

  that feed on plant leaves, causing discoloration, stippling and leaf curling. Their feeding reduces photosynthesis, weakens plant growth and can lead to [...] yield and lower crop quality. In addition, leafhoppers can transmit plant pathogens, increasing the risk of disease spread within greenhouse and field crops

• General Conditions Koppert

  s soon as the Buyer is in breach, the Buyer is obliged to pay to Koppert A interest on the total exigible amount at the rate of the currently applicable [...] used, if upon the conclusion of the agreement the Buyer has made specific reference in writing of both the use in the specific country and the applicable [...] calculated from the date on which the damage occurred. Article 11. Dissolution of the Agreement 11.1 Without prejudice to the provisions in the previous articles