• Impatiens thrips

  leaves and the black dots of their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of chlorophyll. When infestations [...] ps americanus is often found low in the crop. In sweet pepper the damage can be seen as discolouration of older leaves at the bottom of the plant. [...] spread as a consequence of the trade in foliage plants. Impatiens thrips (Echinothrips americanus) has a wide range of hosts. In addition to many ornamental

• American serpentine leaf miner

  areas this can lead to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting vegetable crops, however [...] sweet pepper, pea, bean and potato. In greenhouses, it is mainly found on gerbera and chrysanthemum. Today the insect is widespread across the whole world [...] with ornamental crops, this is usually of less significance. Seedlings and young plants can be completely destroyed as a result of the direct damage caused

• Onion thrips

  leaves and the black dots of their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of chlorophyll. When infestations [...] finally the adult insect. The eggs of the onion thrips (Thrips tabaci) are laid in leaves, flower petals and in the soft parts of stalks. They are inserted into [...] (Thrips tabaci) is distributed throughout the world. It is found outdoors on many plants and particularly damaging on onions, leek, and in greenhouses on

• Tomato russet mite

  was detected for the first time in Australia and is a pest in tomatoes in all areas where they are grown. Other members of the plant family Solanaceae may [...] 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 mite [...] and the rest of the body. All mobile stages have only two pairs of legs, whereas other mite groups have four pairs. Eggs are roughly 0.05 mm in diameter and

• Cotton bollworm

  bollworm ( Helicoverpa armigera ) occurs in the tropics and sub-tropics of all continents except for North America. Larvae of the cotton bollworm ( Helicoverpa [...] yellowish-white to reddish-brown with dark spots. In later instars the head is mottled, and the body is marked with three prominent longitudinal dark bands [...] ely 18 to 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

• Western flower thrips

  leaves and the black dots of their excreta indicate their presence in the crop. The vigour of the plant is reduced by loss of chlorophyll. When infestations [...] variety of plants, including many vegetable and ornamental crops in greenhouses, and on various weeds. It is an especially significant pest in cucumber [...] insect. The eggs of the western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft parts of stalks. They are

• Flies

  shore flies are mainly a problem in greenhouses. Their larvae live in the ground and prefer moist substrates that is rich in organic matter. Although they [...] problem due to their large number. Larvae of flies of the family Keroplatidae (mainly Lyprauta sp.) can cause damage in potted orchids. The Spotted Wing Drosophila [...] damage depends on the species of the flies. Direct damage is the immediate result of larvae feeding on root hairs and tender roots as well as stem and leaf tissue

• Stratiolaelaps scimitus (Hypoaspis miles)

  scimitus is also known under the scientific name Hypoaspis miles . It is a soil-dwelling predatory mite occurring naturally in several parts of the world [...] appear in and on the soil and at the base of plant stems. The reduction of the infestation level occurs at a slow but steady rate. Feeding behaviour of St [...] controls larvae of sciarid flies (fungus gnats), thrips pupae and other soil-dwelling insects. The mites appear in and on the soil and at the base of plant stems

• Beetles

  largest of all insect orders and displays an enormous variety of form, size and habit. A number of species are a serious pest in crops or stored products [...] group of insects that are easily recognizable on account of their hard wing covers (elytra). With more than 350,000 known species, Coleoptera is the largest [...] and adults of beetles can cause damage to crops. The larvae of some species feed on growing tips and roots or chew and bore into stems, but in other species

• Barley

  About This cereal grain is grown in temperate regions worldwide. It is one of the four most important cereal corps grown in the world, next to wheat, rice [...] Barley (Hordeum vulgare) is a member of the grass family and a self pollinating crop. Barley is used in brewing beer, a popular source of animal fodder and a [...] a component in various health foods.