• Impatiens thrips

  been able to spread as a consequence of the trade in foliage plants. Impatiens thrips (Echinothrips americanus) has a wide range of hosts. In addition to [...] undersides of the leaf. Pupation occurs on the leaf rather than on the ground. The prepupae and pupae remain immobile on the leaf tissue. Adults are found [...] eggplants. It lives exclusively on the leaves and is often present on weeds in greenhouses. Life cycle and appearance of Impatiens thrips Impatiens thrips

• Apple rosy aphid

  blotches on the skin. Life cycle and appearance of Rosy apple aphid Aphids have a complex life cycle, with both winged and wingless forms of adults, and [...] plantaginea lays eggs in autumn in bark crevices on spurs and smaller branches, and on the base of buds of apple trees. The eggs hatch in spring and at first [...] leaf fall and death of shoots. Fruits from infested trusses are small and malformed and ripen prematurely. Feeding of aphids directly on fruits causes reddish

• Verticillium wilt

  The symptoms may occur only in parts of the plant. Cutting the stalk horizontally reveals a slight discolouration of the vessels, brown or greenish, but [...] brown stripes occur on the stem. In tomato, sometimes V-shaped lesions are formed on the leaf, between the veins. 'Early dying' disease of potato only occurs [...] Start with clean soil or substrate by heating it at a temperature if at least 65 o C for a minimum of 30 minutes Use clean seed, tubers or cuttings Grow

• Pear psylla

  the harvest of the next year by weakening or killing fruit buds. Pear psyllas excrete large amounts of honeydew. Sooty moulds often grow on the honeydew [...] longitudinal stripes and blackish markings on the head and body. Pear psyllas overwinter as adults, sheltering on the bark of pear trees. The adults become active [...] active in spring and start to feed on young leaves and flowers. Eggs are deposited in crevices of the bark of twigs and hatch after about 3 weeks. There are

• Cabbage moth

  until they are a brown-black or sometimes even a purple colour. They are ridged and have a light network of markings. First instar larvae of the cabbage moth [...] moth (Mamestra brassicae) is a highly polyphagous defoliator. Besides being a major cabbage pest, it feeds on 70 plants of 22 families, among them crops [...] feed mainly on the youngest leaves, producing skeletonized leaves, holes and frass on leaves. The caterpillars destroy large numbers of leaves and their

• Leaf stripe

  General Pyrenophora graminea is a disease of Barley that causes significant yield losses. Damage symptoms Symptoms first occur on the first, second and third [...] third leaf and subsequently on other leaves. Yellow stripes are formed at the base of the leaf and the leaf sheath. They gradually extend and become brown [...] and the number of kernels may be reduced and kernels may be brown. The symptoms do not always occur together. Life cycle and appearance of Leaf stripe P

• Horse-chestnut leaf miner

  the entire surface of the leaflets, especially from July on, when the second and third generations develop. Trees with a low number of attacked leaves are [...] may lay up to 180 eggs singly on the upper part of the leaflets. Females of the second and third generations lay eggs on all leaflet surfaces. Larval [...] not build a true cocoon in the mine. The percentage of larvae which spin true cocoons increases in each of the subsequent generations. Adults of the first

• Silver-Y moth

  d leaves, accumulation of frass and destruction of growing points. Life cycle and appearance of Silver-Y moth The forewings of the silver-Y moth ( Autographa [...] up to 2,000 eggs on the underside of the leaves of their host plant, usually separately but sometimes in small groups. These eggs are a greyish white, suffused [...] with a black lateral line. The body has stiff hairs and is usually greenish with a light lateral line. Below the lateral line there is a dark dot on each

• Tomato looper

  attached to the underside of leaves within folded edges, on random objects and on tomato fruit, often in a bunch of ripening tomatoes, however, it can also be [...] 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 [...] covered with a few stiff hairs. In older caterpillars , each segment has a clear black dot above the lateral yellow lines. There are three pairs of prolegs, instead

• Koppert’s Mirical Wins Prestigious Innovation Award

  February 13, 2024

  Accepting the award on behalf of Koppert, product manager Tim Bossinga said that innovation lay at the core of Koppert’s DNA and is a result of its continuous [...] Berlin on the 9th of February, honours outstanding innovations in the entire fruit and vegetable supply chain, from production to the point of sale. Accepting [...] from a plastic bottle to specially designed corrugated cardboard strips that form a natural habitat for the Mirical beneficial bugs , has created a highly