• False spider mites

  spreading from both sides of the main vein into the leaf blade. The damage often leads to premature ageing of the plant. In some crops, plants can become misshapen [...] clear red colour and elliptical in shape. They are laid in a fold in the leaf or along the mid-vein, often in dense clusters of several hundreds. [...] misshapen, presumably because the mites secrete a substance while feeding, that is poisonous to the plant. In places where mites have been feeding, collapsed

• Obscure mealybug

  name from the fact that the body of the females from the third nymphal instar onwards are covered with a white waxy material in the form of powder, threads [...] layer of wax, the filaments around the body are longer (20-50% of the body size) and the two tail filaments are always markedly longer than the others [...] The obscure mealy bug ( Pseudococcus viburni ) is sometimes encountered on tomato, primarily at the foot of the stalk. In an overhead wire system of

• Plant Health

  secondary metabolites, is essential for resilience against environmental stresses. Fostering plant resilience: the role of plant compounds Defense mechanisms [...] approaches to plant health Embracing biological pest control Over the years, biological pest control has proven effective in managing pests without the drawbacks [...] standards. Nurturing plant-soil interaction Understanding how plants interact with their environment is crucial. Photosynthesis, the source-sink dynamics

• Orchid

  About The orchid is part of an extremely large and diverse of flowering plants, the Orchidaceae or the orchid family . The plant’s flower are usually colourful [...] divided in about 763 genera. In addition, the flowers of orchids come in many different arrangements. Some only have a single flower, but most plants have [...] consist of many flowers. The majority of orchids which are commercially sold is tropical or subtropical. There are varieties however that grow in colder

• Cherry

  Himalaya. The sweet cherry is regarded as the most important ancestor of today’s cultivated cherry and it is one of two cherry varieties most of the current [...] up north in the Trondheimsfjord region of Norway and in the Caucasus and northern Iran. Cherries even grow in a small and isolated cluster in the western [...] from. The other variety is the sour cherry Prunus cerasus , which is primarily used for cooking. Every part of the cherry plant, except for the ripe cherries

• Disclaimer

  and/or loss of time due to the use of this website. loss due to certain information on the website being incorrect, incomplete, or out of date. The website [...] stored in the form of cookies. Koppert reserves the right to store this data and to use it in its statistical data and on other data carriers. The use of [...] automatically mean that Koppert is tied to, or the owner of, these other sites, and is therefore no responsible for these sites or the information contained thereon

• Loose smut of barley

  appearance of Loose smut of barley The seeds are infected during flowering and the infected seeds are the primary source of inoculum in the next crop. The fungus [...] survives inside the seed and when the seed germinates, the mycelium of the fungus grows upwards inside the plant into the growing tip and the seed primordia [...] until head emergence. The first sign of infection is the appearance of a smutted ear. Instead of normal tissue, the ear contains a mass of olive-brown smut

• Chafers

  General The chafers are beetles of the Scarabaeidae family. The larvae of both species live in the soil and feed on the roots of many plants. They are [...] wn in colour. The adult beetles fly in the evening, generally in June and July and land on trees to mate. During the night the females move to the ground [...] substantial damage. The adults are not harmful. Damage symptoms Larval feeding on the roots can lead to yellowing and wilting of plants. Damage can be severe

• Hemp russet mite

  caused by the mites sucking out the contents of plant cells. Hemp russet mite develops on the stems and petioles of the hemp plant and can cause stunting [...] segmented. The body appears to be divided into two parts: the head with the mouthparts, and the rest of the body. All mobile stages have only two pairs of legs [...] large, the mites can also be found on the underside of leaves. This results in smaller leaf size and suppressed bud growth leading to a reduction in the number

• Flowering potted plants

  Begonia is a perennial flowering plants and belongs to the family of Begoniaceae . The genus consists of 1,795 different plant species. Some of these species [...] Phalaenopsis is also known as the moth orchid. Its genus consists of some 60 species. The Phalaenopsis is an extremely popular flowering plant these days [...] About There are many species of flowering potted plants, the most common species are: Poinsettia is well known and popular for its large red, white and