• Thrip control in Strawberry with Orius laevagatus

  May 8, 2019

  stages of the pest, including the adults. The presence of pollen enhances the rate of development of Orius, hence they are frequently found in the flowers [...] on thrips. The establishment of Orius is most effective at day temperatures in excess of 18 0 C, and in view of this, the introduction of the predatory [...] However, such is the effectiveness of Orius against thrips that strawberry growers are advised to introduce the predator from the second half of May, to further

• Horse-chestnut leaf miner

  true cocoon in the mine. The percentage of larvae which spin true cocoons increases in each of the subsequent generations. Adults of the first generation [...] may cover the entire surface of the leaflets, especially from July on, when the second and third generations develop. Trees with a low number of attacked [...] in the firsts instar up to 3.5 mm in the fourth instar. The pupa is brown and is 2.9-4.5 mm long. The horse-chestnut leaf miner overwinters in the pupal

• Integrated Pest Management

  insects and biological control One of the key aspects of IPM is harnessing the power of natural enemies to control pest populations. Predatory mites , parasitic [...] detect the presence of pests and respond accordingly. The use of insect traps ( e.g. Rollertraps or Horiver) is very important for monitoring the flying [...] capable of keeping pest or disease levels below the economic threshold, chemical intervention might be necessary. IPM advocates for the use of the least

• Greenhouse whitefly

  found on the oldest leaves. The adult emerges from the pupa via a T-shaped fissure. The adult whiteflies can usually be found in the top of the plant and [...] adult. The larvae are found on the underside of young leaves and have an oval shape. The first instar larvae (crawlers) are mobile, whereas the rest of the [...] General The greenhouse whitefly ( Trialeurodes vaporariorum ) is one of the major pests of vegetable and ornamental crops in greenhouses throughout the world

• American serpentine leaf miner

  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 [...] enter the plant tissue via the feeding spots. Life cycle and appearance of American serpentine leaf miner The life cycle of a leaf miner has the following [...] ovipositor, 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

• Cotton aphid

  including the cucumber mosaic virus. Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s [...] to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky [...] can be distinguished from other aphids by the colour of the two cornicles (siphunculi). These cornicles are always black, whatever the body colour, which

• Natupol Trio

  life in the bumblebee colonies, the ‘Beehome’ system should be closed. Remove the plastic liner and the sugar water tank from the hive, then place the liner [...] Mode of action After introduction of the hive, worker bumblebees start pollinating the flowers while at the same time collecting pollen to feed the brood [...] down the hive for example with a stone, to prevent it from blowing away Open the ventilation openings on top of the hive during warm weather Pull the white

• Grey mould

  cinerea ) is part of the foot rot complex, which causes rotting of the foot and may cause death of the plants. In cucumber and tomato the fungus causes lesions [...] lesions on pruning wounds. These lesions may encircle the stem, so the part of the plant above the lesion wilts and dies. In vegetables and strawberry, [...] that it excretes compounds that kill the plant cells and then uses the content of the plant cells as nutrients. On the infected area, new spores are formed

• European red mite

  (tubercles) at the base of the hairs; males are about 0.3 mm long, yellowish red, and more slender and tapered near the hind end. The development from egg to adult [...] 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. [...] originates from Europe (as can be seen from the common name, European red mite) but is now distributed in all important apple growing areas of the world. European

• Cutworms

  occasionally tunnel into the growing stalk, disrupting the sap flow in the plant. Life cycle and appearance of Cutworms The adults of Agrotis spp. have pale [...] Important species are for instance the black cutworm Agrotis ipsilon and the turnip moth Agrotis segetum . The larvae of these moths usually feed on roots [...] and plant parts close to the ground, thereby often cutting the stems of young plants. This is where their common name comes from. Cutworms are vey polyphagous