• Bacterial wilt, brown rot

  us roots on the stem. The vascular stem tissue is coloured brown and when the stem is cut, bacterial slime oozes from the wound. This is the way to distinguish [...] signs of wilting during the day which may disappear in the early stages of infection. Under conditions favourable for the bacteria, the whole plant will wilt [...] knives and tools Control root rot nematodes as the wounds they make on roots help the bacteria to infect the crop Do not use cut potatoes for propagation

• Biocontrol for Spider Mites

  April 24, 2020

  damage to the host plant by feeding on plant tissue and plant sap, primarily on the underside of leaves where they pierce the cells and suck out the contents [...] spider mites on cucumber plants, and thus laid the foundation for the biological control of many plant pests on numerous plants in the horticultural and [...] and as the chlorophyll is removed, the leaf, and eventually the whole plant, may die. Nymphs and adults of spider mites produce webbing in which the mites

• Grey mould

  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 on pruning [...] 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 [...] remove dead leaves on the stem once, especially in the autumn, because from these leaves the stems are infected, possibly killing the entire plant maintain

• Limonica: breakthrough in large-scale production of a complex predatory mite

  October 6, 2025

  production, they reviewed the entire process, from the type and quantity of feed to the composition of the rearing medium and the design of new production [...] protection Marjon is confident about the future of Limonica . “We have cracked the code. The rearing is good, the volumes are adjustable, and we are ready to [...] accepts the best food. It is a diva. And that makes its production complex.” From unstable produce to robust upscaling The challenge was not only in the rearing

• Bacterial canker of tomato

  half of the season. The first symptoms are wilting of the lower leaves and subsequent expansion of the wilt upwards. Cutting the stem at the foot shows whitish [...] ‘suspect’ that year. On the infected field no potatoes or other Solaneceaous crops can be planted for five years. On other fields on the same farm, no seed [...] then growing into the vessels of the plant. Plant growth is inhibited and the plant wilts because the xylem vessels become blocked. The bacterium can survive

• Black leg of seedlings

  later the plants wilt irreversibly. In potted plants the flower buds fall off. The side roots rot and very little of the root system survives. On the border [...] older plants, the leaves lose their turgor or the leaf tips turn yellow, for example in flower bulbs. At first, the plants recover during the night, but later [...] and soil or substrate the plant turns brown. A typical symptom of a Pythium infection is the easy stripping of the skin from the root cortex with a finger

• Predatory mite pioneers: A journey of biocontrol innovations

  October 24, 2024

  at Koppert, “part of the company furniture,” as he puts it. Originally from Belgium, Peter arrived at the Koppert headquarters in the Netherlands in 2001 [...] application technologies like the Airobug .” Lifting barriers The Airobug is one of Koppert's air blowing systems for the efficient and even distribution [...] biological pest control , as the mites are able to reach the pest faster.” An innovation toolbox Since 2006, Koppert has accelerated the introduction of new solutions

• Predatory mite pioneers: A journey of biocontrol innovations

  October 21, 2024

  at Koppert, “part of the company furniture,” as he puts it. Originally from Belgium, Peter arrived at the Koppert headquarters in the Netherlands in 2001 [...] application technologies like the Airobug.” Lifting barriers The Airobug is one of Koppert's air blowing systems for the efficient and even distribution [...] biological pest control , as the mites are able to reach the pest faster.” An innovation toolbox Since 2006, Koppert has accelerated the introduction of new solutions

• Rhizoctonia solani

  Damage symptoms The symptoms caused by Thanatephorus cucumeris depend on the time of infection. In general, the fungus causes symptoms on all plant parts [...] wet soil. On the infected plant parts, mycelium and new sclerotia are visible. They fall off the plant onto the soil and thus increase the pathogen density [...] symptom of root infection is that the taproot is reduced to a thread. Reddish-brown lesions occur on the root just below the soil surface. A white collar of

• Natutec Drone

  dispersal – this shortens the time the beneficial organisms need to establish itself in the ecosystem and do its work in the crop Trained pilots - Koppert’s [...] with the vulnerable beneficials and the unique dispersal system. Two controllers keep the Natutec Drone stable and you can follow its progress in the crop [...] 13 litres. The benefits of Natutec Drone dispersal: Significant labour-saving – your staff can carry out other tasks while the drone does the work; especially