• False spider mites

  mites because their body is rather flat compared to other mites. Most species that cause damage to cultivated plants belong to the genera Brevipalpus and [...] presumably because the mites secrete a substance while feeding, that is poisonous to the plant. In places where mites have been feeding, collapsed patches can [...] are a clear red colour and elliptical in shape. They are laid in a fold in the leaf or along the mid-vein, often in dense clusters of several hundreds.

• Cabbage leafroller

  cabbage leafroller (Clepsis spectrana) is native to North-West Europe. It is a highly polyphagous species causing damage to field grown cabbage, apple, pear [...] lateral stripes that are sometimes light in colour. The ventral surface is lighter than the dorsal, with hairs located in warty spots that are lighter than [...] inside fruit or flowers. It is these webs that cause the leaves to curl. Many of these webs are empty, and it is thought that the caterpillars probably make

• Strawberry

  significant damage to the plants, leading to reduced yields and compromised fruit quality. In addition to pests, strawberry crops are also susceptible to several [...] management in strawberry Integrated pest management (IPM) plays a crucial role in ensuring the health and productivity of strawberry crops due to the presence [...] their growth, and cause severe damage to both foliage and fruits, if not properly managed. Implementing IPM strategies is crucial for effectively controlling

• Beneficial nematodes

  bodies, and they come in a variety of sizes, ranging from microscopic to several inches in length. Nematodes play various roles in ecosystems. Some are [...] What are nematodes? Nematodes, commonly referred to as roundworms, are a diverse group of worms belonging to the phylum Nematoda. Nematodes are characterised [...] species is known for its effectiveness against pests such as wireworms, various caterpillars , and weevil and beetle larvae. Its ability to adapt to different

• Western flower thrips

  can also be damaged, even at low densities, giving rise to deformities such as the “pig-tail” fruit sometimes found in cucumber crops. In many ornamental [...] western flower thrips (Frankliniella occidentalis) is currently the most damaging thrips species in many greenhouse crops. The western flower thrips ( [...] many vegetable and ornamental crops in greenhouses, and on various weeds. It is an especially significant pest in cucumber, sweet pepper, eggplants, and

• Cannabis

  Management (IPM) in cannabis Integrated pest management (IPM) is important when it comes to keeping cannabis plants healthy and productive. This is because cannabis [...] different pests and diseases that can cause problems. Biological control is a key component of Integrated Pest Management (IPM) in cannabis cultivation. It [...] mites , and leaf miners . These pests can damage the plants, which results in less yield and quality. Next to pests, cannabis plants can also suffer from

• Damping-off

  aphanidermatum mostly occurs in young plants and damage is more extensive in young crops. Damage symptoms Pythium affects roots, in particular those of seedlings [...] General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress [...] through other similarly damaged spots. On the infected plant, new sporangia with zoospores are formed, that allow the disease to spread to neighbouring plants

• Tobacco whitefly

  and the excess is excreted as honeydew, with larger larvae expelling large quantities. The damage that whiteflies cause to a crop is the result of sucking [...] causes damage in (sub-)tropical areas especially. The tobacco whitefly ( Bemisia tabaci ) is feared because of its high level of resistance to many in [...] leaves can wilt and fall. Such leaf damage can in turn influence the development of fruit and lead to a reduction in yield. The honeydew deposited on fruit

• Lyprauta

  (family Keroplatidae) have been associated with root damage in potted orchids, especially in greenhouses in the Netherlands. Dutch farmers call these larvae [...] Enchytraeidae. Damage symptoms The symptoms are superficial damage on roots. Especially the root tips are affected. They become black and start to rot internally [...] white and have a long slender body. The head is brown or reddish. The pupae are white to yellow and embedded in a dense web. Adult flies are long and slender

• Phytoseiulus persimilis

  This has the advantage that an outbreak is quickly and effectively dealt with, but the disadvantage is that it disappears rapidly in the absence of suitable [...] persimilis is sensitive to relative humidity below 70%. Phytoseiulus persimilis in bottles The predatory mite Phytoseiulus persimilis is available in a bottle [...] are similar to the adults in appearance, but smaller in size. Best conditions for use of Phytoseiulus persimilis Phytoseiulus persimilis is most effective