• Tobacco aphid

  January 1, 1970

  brown spot on the abdomen and several transverse black bands across the body. The antennae are 0.7-1.0 times the body length, reaching to the siphunculi [...] of dispersing through the crop by walking. The tobacco aphid tends to form denser colonies, closer to the top of the plant, than the peach potato aphid [...] from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation

• Working at Koppert

  January 1, 1970

  over the past 50 years, but despite its international character, Koppert remains a family company in which cooperation and respect for people and the environment [...] important. The company is developing fast, so we are keen to draw people who will play a role in its further growth. There is much room for personal input [...] recognized as a training company in many fields. To develop your career within the company, Koppert has developed an internal career policy. New vacancies are

• Cucumber

  January 1, 1970

  About The cucumber ( Cucumis sativus ) is a popular, extensively cultivated plant that belongs to the gourd family of Cucurbitaceae . The cucumber originates [...] particularly in India. The plant’s cultivation history goes back some 3000 years and it is now being produced on most continents. The cucumber plant is a [...] grows up trellises or other supporting frames. The plant supports itself with thin, spiraling tendrils. The cucumber plant has large leaves and it produces

• Coffee

  January 1, 1970

  About Coffee beans are the source of one of the most popular beverages in the world. They are in fact, not actual beans, but the seeds of Coffea , a genus [...] a member of the Rubiaceae family and grows on shrubs native to tropical and southern Africa and tropical parts of Asia. Grown widely in the tropics, cultivated [...] temperatures below zero. The shrub produces red or purple fruit called ‘cherries’. These contain two seeds, the coffee beans. One of the most widely grown coffee

• American serpentine leaf miner

  January 1, 1970

  criterion for the identification of the species. Indirect damage arises when disease causing fungi or bacteria enter the plant tissue via the feeding spots [...] exit hole in the leaf with its mouth parts. After roughly one hour the larva crawls out of the leaf and falls to the ground. This occurs in the early morning [...] morning. The larva crawls into the ground to pupate. A small percentage of the larvae remain hanging on the leaf and pupate there.

• Tomato leaf miner

  January 1, 1970

  percentage of the larvae remain hanging on the leaf and pupate there, sometimes on the upper surface but more commonly on the underside. The late third instar [...] roughly one hour the larva crawls out of the leaf and falls to the ground. This occurs in the early morning. The larva crawls into the ground to pupate [...] larvae have a yellow head. When the larva hatches from the egg, it begins to eat into the leaf at once, tunnelling down into the mesophyll tissue where damage

• Chilli thrips

  January 1, 1970

  dorsalis , commonly known as the chilli thrips, is an emerging pest of significant concern in greenhouse cultivation. Known for its ability to damage a wide [...] Reproduction is both by sexual and partheno-generic. Larvae and adults feed on the underside of leaves, creating silvering, curling, and deformities in leaves [...] reproduction and widespread adaptability. Life cycle and damage of Scirthothrips The life cycle of Scirtothrips dorsalis consists of six stages: egg, two larval

• Bugs

  January 1, 1970

  their body when at rest. The wings overlap each other exposing the scutellum, a prominent triangular region of the thorax between the wing bases. This dis [...] residue-free production. Solutions for bug control Learn more about What are bugs? Heteropteran bugs form a group in the order Hemiptera , a highly diverse [...] consists of an egg, usually five nymphal instars and the adult insect. Several species of especially the families Miridae and Pentatomidae are found as pests

• Leafhoppers

  January 1, 1970

  of leafhoppers Leafhoppers are highly mobile, sap-sucking pests that feed on plant leaves, causing discoloration, stippling and leaf curling. Their feeding [...] quality. In addition, leafhoppers can transmit plant pathogens, increasing the risk of disease spread within greenhouse and field crops. Effective leafhopper [...] natural balance, ensuring consistent quality and optimal yield. Solutions for leafhopper control

• Consumers

  January 1, 1970

  . By the time a delicious little tomato reaches your plate, it has already had a very long journey. The plant first has to form fruit before the tomato [...] care of the pollination and therefore the formation of fruit. Honeybees are traditional important pollinators of arable and horticultural crops. The bumblebee [...] a close relative of the honeybee. In 1987, it was established that bumblebees could prove extremely useful in greenhouses for the purpose of pollination