• 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

• 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 organisation 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 [...] canopy for several hours after application for the spores to germinate and infest the pest Spray at late afternoon and/or early evening

• 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

• Black root rot of cucurbits

  a few of the roots but in severe cases all roots may be infected. At the final stage of the disease, only vascular tissue remains because the cortex (outer [...] sclerotia which can survive adverse conditions for years in the soil, but little else is known about the life cycle. The fungus is dispersed by water, air and soil [...] cucumber roots. The lesions are slightly sunken and are mostly formed around the point of attachment of lateral roots and root hairs. The lesions may grow

• Apple scab

  Apple scab is one of the most economically important fungal diseases of apple worldwide. Caused by the fungus Venturia inaequalis , the disease infects leaves [...] Venturia inaequalis primarily survives the winter in infected fallen leaves on the orchard floor. Within these leaves, the fungus forms pseudothecia, which produce [...] tissue remains wet for several hours under favorable temperatures. Secondary infection Once primary lesions develop on leaves or fruit, the fungus produces

• 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

• Bacterial spot

  as they grow. The centre of the lesions may fall out as they become drier. Under humid conditions, the spots may merge with lesions on the petioles and [...] green fruits. The specks grow into brown spots that look like scab. These spots may be surrounded by a halo. In pepper, the spots on the leaves are also [...] infection, pepper plants shed the leaves that are severely infected. Humid conditions are conducive for lesion expansion. On the stems, long, narrow cankers

• 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

• 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 recognised 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