• Onion

  common onion, is a vegetable. This particular species is the most extensively produced species of the genus of Allium . The onion plant is usually a biennial [...] perennial plant. When cultivated however, the plant is mostly handled as an annual and harvested at the end of its first production season. Onions are popular [...] cultivated and used for cooking all around the world. Their flesh is pungent when chopped, because it contains particular chemical elements that irritate the eyes

• Black vine weevil

  approximately 12 mm. A larva is often curled into the typical C-shape which it assumes whenever it is disturbed. The body is covered with stiff white to [...] sulcatus, is a pest in many ornamental crops (e.g. rhododendron, cyclamen and azalea), as well as in strawberries and other fruit crops in both temperate [...] found between the inside of a plant pot and its contents, under lumps of e, in vegetation and under planks etc . In temperate climates, the small (0.7 mm diameter)

• Tomato looper

  family of Noctuidae . It is a tropical and subtropical species originating in the Mediterranean and northern Africa. The larva is highly polyphagous and [...] countries and is now one of the most frequently found pest species in greenhouses. Damage symptoms The tomato looper (Chrysodeixis chalcites) is primarily [...] each other. The hindwings are brown. The body is brown and hairy and, when at rest, the hairy dorsal plume is characteristically distinct. The antennae are

• Potato aphid

  the dorsal surface. In green individuals, this stripe is dark green, while in pink specimens it is dark red. This longitudinal stripe is specifically cha [...] aphid ( Macrosiphum euphorbiae ) is of North American origin, but is these days distributed throughout the world. It is a highly polyphagous species with [...] sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky. Black fungal moulds ( Cladosporium

• European red mite

  Rosaceae grown in greenhouses. It originates from Europe (as can be seen from the common name, European red mite) but is now distributed in all important [...] 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. [...] Panonychus ulmi , is mainly a pest of fruit trees (apple, pear, plum and cherry). However, it can attack a large scale of other woody plants and is occasionally

• Apple

  deciduous apple tree belongs to the rose family and is now cultivated for its fruit all over the world. It is the most common cultivated species of the genus [...] of the apple is protected by a layer of epicuticular wax. Apples usually have a yellowish-white coloured exocarp. Sometimes their flesh is also pink or [...] About The apple tree (often named Malus domestica by mistake) is best known for the apple, the tree’s usually sweet and pomaceous fruit. Apples originate

• Impatiens thrips

  the trade in foliage plants. Impatiens thrips (Echinothrips americanus) has a wide range of hosts. In addition to many ornamental plants it also attacks [...] attacks sweet pepper, cucumber and eggplants. It lives exclusively on the leaves and is often present on weeds in greenhouses. Life cycle and appearance of [...] the leaves themselves can shrivel. Echinothrips americanus is often found low in the crop. In sweet pepper the damage can be seen as discolouration of older

• Soybean

  or soya bean is a so-called legume and indigenous to East Asia. It is extensively cultivated for its edible beans. The fruit of the plant is a hairy pod [...] seeds that measure 5-11 mm in diameter. Soybean seeds vary greatly in size and the hull can be black or brown, but also blue, yellow or green. When planting [...] pod, that grows clustered in small bunches of three to five pods. Each pod measures between 3-8 centimetres long (1-3 inch) and contains two or four seeds

• Potato

  tuberosum ) is used to refer to the plant itself or its edible tuber. The plant is an herbaceous perennial and came to Europe from Latin America in the second [...] tuberous crop is an 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 [...] world, after maize, wheat and rice. Potato plants grow up to some 60 cm tall. Its leaves die after flowering, fruiting and the development of the potatoes.

• Tomato leaf miner

  crop damage in many parts of the world, including North Africa, Europe and northern Asia. In warmer regions, the insect is found outdoors but in temperate [...] temperate regions it only occurs in greenhouses. The tomato leaf miner has been found in greenhouses for decades, but has become a common pest since the 1960’s [...] 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