• Downy mildew of Cucurbits

  and the germ tubes infect the plants either through the stomata or directly by penetrating the cuticula. For germination free water is required. For most [...] most downy mildews, the optimum temperature is around 15 o C and the closer the temperature is to this, the shorter the leaf wetness period that is required [...] Inside the plant, the pathogens produce haustoria, small organs with which the pathogen can take up nutrients from the living plant cells. The pathogens

• Bacterial canker of tomato

  brown centre. In potato, the disease usually only occurs in the second 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 ooze with bacteria in the case of C lavibacter infection, but other than that the disease [...] 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

• Limonica Ulti-Mite

  in the crop, not exposed to direct sunlight Sachets already have an exit hole Hold sachets by the cardboard strip at the top, to avoid damaging the predatory [...] weeks if the pest is not controlled. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation [...] multiply in the sachet and disperse into the crop over a period of several weeks. Predatory mites use their piercing mouthparts to extract the contents of

• Municipality Doetinchem: Entonem nematodes managing oak processionary caterpillar

  oak trees in the forests and plantations around Doetinchem. Marc van Rijswijk is the spokesman for Buha, the implementing organization for the Municipality [...] reduce the level of infestation. ‘By using Entonem and extracting the nests as a curative measure, we can keep the situation manageable for now. In the longer [...] play – breaching the monocultures of the oak and stimulating the natural enemies of the oak processionary caterpillar. As already stated, the use of nematodes

• Akanthomyces muscarius

  inside the pest, the fungus grows and proliferates, ultimately leading to the death of the insect host. This process is often facilitated by the production [...] weakens the pests, eventually leading to their death. Additionally, the fungus produces enzymes and toxins that further contribute to the demise of the pests [...] and the timing of application. The following conditions are required: Akanthomyces muscarius requires sufficient humidity inside the crop canopy for several

• Predatory mite pioneers: A journey of biocontrol innovations

  September 30, 2024

  Ulti-Mite solution for a swift response. “We were the first and remain the only company to offer an alternative to paper sachets for the application of predatory [...] application technologies like the Airobug.” Lifting barriers The Airobug is one of Koppert's air blowing systems for the efficient and even distribution [...] In the vibrant world of horticulture, Koppert stands out for its commitment to innovation. By combining a deep respect for nature and understanding of

• 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 [...] spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving conidia in the soil. Use resistant [...] 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

• Spical-Plus

  in the crop, not exposed to direct sunlight Sachets already have an exit hole Hold sachets by the cardboard strip at the top, to avoid damaging the predatory [...] weeks if the pest is not controlled. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation [...] multiply in the sachet and disperse into the crop over a period of several weeks. Predatory mites use their piercing mouthparts to extract the contents of

• Municipality Enschede: Entonem nematodes against oak processionary caterpillar

  The Municipality of Enschede started using nematodes for the first time in the spring of 2021 to try to halt the spread of the oak processionary caterpillar [...] caterpillar. The municipality’s built-up area has a total of 22,000 oak trees. In the past, the municipality only extracted the nests. But as Petra Klein Breukink [...] Breukink explains, it was not enough. She is the project manager of the oak processionary caterpillar for the Municipality of Enschede. ‘We use Koppert’s

• Cottony soft rot

  base and the roots, whereas the ascospores infect the above-ground plant parts. In greenhouses, usually only mycelium is produced by the germinating sclerotia [...] sclerotia. The fungus grows quite rapidly inside the plant and kills the host cells. On the infected plant tissue white, fluffy mycelium occurs with new [...] new dark sclerotia. The fungus also infects seeds and tubers, thereby creating a source of infection for the next crop. The dispersal to neighbouring plants