• Transeius montdorensis

  leaves. They are oval, white and have a diameter of approximately 0.14 mm. The larvae have six legs, are the same colour as the eggs, and are only slightly [...] elongated body. They are roughly 0.4 mm in length. Males are smaller than females. The mites are very mobile and actively search for food on the underside of leaves [...] also available in breeding sachets ( Montdo-Mite Plus ). In this case the predatory mites multiply in the sachet and disperse into the crop over a period

• Leaf miners

  species in this family, only eleven are truly polyphagous. The species that cause most damage all belong to the genus Liriomyza and are very common in temperate [...] 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 plant and the species of [...] 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

• Aphids

  fruit and ornamental crops and rendering them unmarketable. At the same time, photosynthesis in the leaves is reduced, affecting production. The aphid’s [...] leaves, stems, and flowers by piercing the plant tissue and sucking out the sap. This can result in stunted growth, curling or distortion of the leaves, yellowing [...] mating occurs and eggs are laid, the life cycle is termed holocyclic (complete). In greenhouses, however, the alternation of host plant and egg-laying may

• Neoseiulus cucumeris

  deutonymph and adult. Eggs are laid on the underside of leaves on leaf hairs or in the axils of main and side veins. They are oval, white and have a diameter [...] instance in sweet pepper crops as the predatory mite can establish itself in the crop before the pest appears. The success of predatory mites in controlling [...] diameter of approximately 0.14 mm. The larvae have six legs, are the same colour as the eggs, and are only slightly larger. They do not need to feed to develop

• Cottony cushion scale

  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 and eventually [...] depletion; the shoots dry up and die, and defoliation occurs. In addition, the copious quantities of honeydew produced by the scales coat the leaves, blocking [...] blocking the stomata and impeding gas exchange. Sooty moulds grow on the honeydew, blocking the light from the leaves and reducing photosynthesis. Also

• Aphytis melinus

  more wasps in the areas of the field where scales are present. Release early in the morning or late in the afternoon. Release the same day the product is [...] points. Use the lid, the 8 strips of green paper, the cotton on the bottom and the jar itself. Make a homogeneous distribution throughout the plot. Release [...] adulthood, the adult wasp chews a small round hole in the scale cover and leaves. Males and females are a lemon-yellow with green compound eyes and three red

• Strawberry

  means that the fleshy, edible part of the fruit does not develop from the plant’s ovaries, but from the receptacle that holds these same ovaries. The so-called [...] so-called ‘seeds’ (achenes) that are visible on the strawberry’s skin, are in reality the ovaries of the flower with a seed inside. [...] well-known hybrid species of the genus Fragaria (collectively referred to as the strawberries). Technically speaking, the strawberry is a so-called aggregate

• Thrips

  on leaves and the black dots of their excreta indicate their presence in the crop. At a later stage, the empty cells become desiccated and the adjacent [...] Thrips are among the most challenging pests in greenhouse and field crops. Their feeding and virus transmission cause leaf deformation, silvering and fruit [...] some are predators, and fewer than 20 species can cause problems in agriculture and horticulture. Thrips are small insects (0.5-14 mm), with the largest

• American serpentine leaf miner

  , usually in the upper side of the leaf. Egg spots are oval and hard to distinguish from feeding spots. The larvae of Liriomyza trifolii are entirely [...] 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 [...] indirectly. The most direct damage is caused by the larvae mining the leaf tissue, leading to desiccation, premature leaf-fall and cosmetic damage. In tropical

• Cotton bollworm

  19 mm in length and have a wingspan of about 40 mm. The grey-green males are smaller. The forewings are edged with a line of black spots, and the hindwings [...] grown larvae are 30 to 40 mm long. The first instars are the most mobile, and move like loopers. The caterpillars are often aggressive and cannibalistic [...] although the preference is for smaller specimens. The fruits stop growing, mature rapidly, and drop off. In legumes, flowers are attacked, and seed pods