• Plant Disease Management

  cycles and reduces the buildup of pathogens in the soil. Disease-resistant varieties Another vital aspect of prevention is the use of disease-resistant [...] biological disease control? Biological control of plant diseases is a method used to manage and reduce the impact of plant diseases by utilizing beneficial organisms [...] on the use of living organisms to suppress or control plant pathogens, which are microorganisms that cause diseases in plants. The primary goal of biological

• Tomato looper

  throughout the crop, on the lower and upper surfaces of leaves. The caterpillar passes through 6 instars. It has a green head capsule and a yellowish-green [...] prolegs, instead of the normal five and therefore the caterpillar moves with the same looping motion as an inchworm (geometrid). The cocoon is usually attached [...] be found in the soil. The pupa has a pale green body, with a dark brown ventral dorsal stripe, but the body can also be entirely brown.

• Buckthorn-potato aphid

  half the body length. The aphids overwinter as eggs on buckthorn. After emerging in spring, the aphids mainly feed on the underside of leaves of their [...] deformation. The major problem in potatoes is the transmission of viruses. Life cycle and appearance of Buckthorn-potato aphid Aphids have a complex life [...] General The buckthorn- potato aphid , Aphis nasturtii , has a nearly cosmopolitan distribution and is a major pest of potatoes, where it also transmits

• Blackcurrant aphid

  distal third of the siphunculi is slightly swollen. In spring, the blackcurrant aphid lives on the underside of the young leaves of currant plants. It does [...] cycle and appearance of Blackcurrant aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour [...] females of the blackcurrant aphid are 1.3-2.6 mm long and pale greenish white or sometimes yellowish, often with a darker green spinal stripe. The distal

• Expanded board to strengthen development at Koppert Biological Systems

  April 19, 2018

  EN RODENRIJS, THE NETHERLANDS – Koppert Biological Systems has increased the size of its board in response to the projected growth of the Dutch family company [...] realize that it was time for change within the top tier of the company’, says CEO Paul Koppert. ‘Three of the original board members will stay on to ensure [...] non-family members who have earned their spurs over the years. The new members of the board each have their areas of expertise and we have every confidence that

• Tomato leafminer

  place in the soil or on the surface of a leaf, in a curled leaf or in a mine. If they leave the mines they build silk cocoons on the leaflets or in the soil [...] cycle and appearance of Tomato leafminer The female moth of the tomato leaf miner ( Tuta absoluta ) lays about 260 eggs. The eggs of the tomato leaf miner [...] mine inside the leaf, stem or fruit. In the second to fourth instars they become greenish with a black band behind the head. The prepupae of the tomato leaf

• Tomato russet mite

  out quickly. The damage is first seen on the lower part of the plant and moves upwards as the mites ascend. Life cycle and appearance of tomato russet [...] 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, whereas other mite groups [...] Damage is caused by the mites sucking out the contents of plant cells. Affected leaves are slightly curled and acquire a silvery sheen on the underside. Later

• European red mite

  generations in one year. The European red mite overwinters in the egg stage; the “winter eggs” are laid in the wooden parts of the host plants in autumn. [...] attack a large scale of other woody plants and is occasionally a problem on roses and other ornamentals of the family Rosaceae grown in greenhouses. It [...] and appearance of 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

• Mottled arum aphid

  green with black cross bands behind the head, broken along the midline, and a large horseshoe-shaped spot on the back of the abdomen. These black markings can [...] large amounts of honeydew, which provides an excellent substrate for the growth of black sooty mould. Large areas of mould covering the leaves can reduce [...] General The mottled arum aphid, Neomyzus circumflexus , has a cosmopolitan distribution and a wide host range. In temperate climates it is primarily a pest

• Cabbage leafroller

  forming a “V” when at rest. At rest, the wings are held folded almost horizontally over the body. The antennae are thin and of medium length. The moths fly [...] fly when it is dark. The yellow eggs are laid in batches of 10 to 90 pieces and covered with a gelatinous layer on the upper side of leaves, preferably on [...] caterpillar has a rather dull appearance. In the fruit of sweet pepper, however, the caterpillars are much lighter and have dark lateral stripes. The caterpillars