• Western flower thrips

  finally the adult insect. The eggs of the western flower thrips (Frankliniella occidentalis) are laid in leaves, flower petals and in the soft parts of stalks [...] disturbed. In the adults both pairs of wings are fully developed. Damage symptoms Thrips cause damage to plants by piercing the cells of the surface tissues [...] crop. The vigour of the plant is reduced by loss of chlorophyll. When infestations become serious the leaves themselves can shrivel. Western flower thrips

• American serpentine leaf miner

  exit hole in the leaf with its mouth parts. After roughly one hour the larva crawls out of the leaf and falls to the ground. This occurs in the early morning [...] full-grown plants of fruiting vegetable crops, however, a considerable quantity of foliage can get damaged before the harvest is affected. The older larvae make [...] criterion for the identification of the species. Indirect damage arises when disease causing fungi or bacteria enter the plant tissue via the feeding spots

• 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 [...] time in Australia and is a pest in tomatoes in all areas where they are grown. Other members of the plant family Solanaceae may be affected to a lesser [...] symptoms 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

• Potato

  integral part of the world’s food supply and many people’s diet. In terms of volume, potato is the fourth-largest food crop in the world, after maize, wheat [...] About The word ‘potato’ ( S olanum tuberosum ) is used to refer to the plant itself or its edible tuber. The plant is an herbaceous perennial and came [...] Latin America in the second half of the 16th century. Potatoes as a food crop were introduced by the Spanish. Now this starchy, tuberous crop is an integral

• Cyclamen mite

  than usual. In cyclamen, the flowers are damaged and leaf growth is inhibited. In hedera, a mite attack can cause baldness in parts of the stem. Gerbera [...] become brown near the base. Life cycle and appearance of Cyclamen mite The life cycle of the cyclamen mite ( Phytonemus pallidus ) has the following stages: [...] to transport pharate females. Eggs of the cyclamen mite are about half the size of the adult mite. They are oval in form, smooth, transparent and twice

• Early blight

  occur at the side of the stem. Life cycle and appearance of Early blight From the primary infection of leaves, Alternaria solani can spread to the flowers [...] General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause [...] humidity (RH) of over 90% or when the leaves are wet. Small differences in optimum temperature occur between species, but in general the risk of Alternaria

• Amblyseius swirskii

  underside of leaves, often in the axil of veins. They are oval, white and are approximately 0.14 mm in diameter. The larvae have six legs, are the same colour [...] also feed on pollen, which is useful for instance in sweet pepper crops as the predatory mite can establish in the crop before the pest appears. Amblyseius [...] search for food on the underside of leaves. They often congregate in the axils of leaf veins to rest. Their colour can vary according to the prey eaten, and

• Beet armyworm

  to the top of the plant where they feed mainly on the growing tips. They produce large holes in the leaf, sometimes stripping the leaf down to the mid-rib [...] es for the growth of the crop. With a substantial population of caterpillars, the damage can spread to the stems, and in the worst cases to the fruit. [...] even black. The colour and pattern of the caterpillars is highly variable and depends partly on the host plant, the stage of development and the climate.

• Neoseiulus cucumeris

  which is useful for instance in sweet pepper crops as the predatory mite can establish itself in the crop before the pest appears. The success of predatory [...] cucumeris is also available in breeding sachets ( Thripex -Plus). In this case the predatory mites multiply in the sachet and disperse into the crop over [...] cucumeris is used for the control of the following pests: Thrips Neoseiulus cucumeris mites actively seek out and prey on the first instar larvae of various

• Southern European marshland pyralid

  caterpillars often stay in the lower strata of the crop, sometimes attacking the stem of the plant as well as the leaves. Late instar larvae burrow into soft [...] line on the forewing. The end of the remarkably long abdomen bends upward almost vertically, with the abdomen of males often being longer than that of females [...] singly or in groups of 5 to 10 eggs, overlapping in a tile-like fashion on both the upper and lower surface of leaves close to the veins, or low on the stem