• Tree specialist Wolterinck: Control of oak processionary caterpillar with Entonem

  is a specialist in tree care and weed control and works on behalf of local authorities and governmental bodies. Co-owner and general director Ivo de Groot [...] be needed, either of nematodes or of nematodes plus Bacillus thuringiensis -based products. ‘That is effective around ten days in and if the trees have [...] based on Bacillus thuringiensis , which can only be used on trees with leaves. Nematodes are a better solution for urban areas.’ Wolterinck BV sprays the nematodes

• A legacy of sustainability: Stolk Brothers and Koppert’s shared vision

  March 17, 2025

  calling. “In the early 90s, my father and uncle began working with Koppert, driven by firsthand experience of the impact of chemical pesticides. My father developed [...] connection between Stolk Brothers and Koppert runs deep. “Our families have known each other for years. That foundation of trust made it easy to work together [...] predatory mites and have since incorporated bio fungicides and other biocontrol agents. But at the core, predatory mites are our go-to solution,” says Pieter

• Mealybugs and scales

  Coccoidea are at first sight barely recognizable as insects. The females are wingless and immobile, and covered with a hard scale (armoured scales and soft [...] first sign of the presence of this type of pest. Among ornamental crops, ferns are particularly sensitive to soft scales, as are oleanders and orchids. Armoured [...] Biological control of mealybugs and scales Mealybugs and scale insects are persistent pests that feed on plant sap, weakening crops and producing honeydew

• Wheat bunt

  slightly stunted. Infected (bunted) heads are slender and remain green longer than healthy heads. The glumes are opened either on some or on all spikelets [...] hence the common name stinking bunt. Life cycle and appearance of Wheat bunt Tilletia tritici and Tilletia laevis survive as teliospores in the soil or [...] moisture and form basidiospores, also called primary sporidium. Two mating types are distinguished. The filiform basidiospores fuse in the middle with a ba

• Bacterial canker of tomato

  the name ring rot. Life cycle and appearance of Bacterial canker of tomato Clavibacter is seed-borne and tuber-borne and primary infection is mostly from [...] clothing and gloves, disinfect tools and greenhouse structures Use a crop rotation in field crops of at least two years and alternate with a non-host [...] . Potato growers lose their entire crop of the affected field and potatoes from other fields on the farm, are labelled as ‘suspect’ that year. On the infected

• Crop Monitoring and Scouting

  traps and pheromones, growers can promptly detect the presence of pests and respond accordingly. Benefits of crop monitoring and scouting One of the most [...] monitoring and scouting In the world of agriculture and horticulture, the phrase "knowledge is power" couldn't be truer. Crop monitoring and scouting are crucial [...] determine the success or failure of a harvest. These essential techniques provide growers with insights into the health and growth of their crops, enabling them

• Combating Strawberry Aphids with Aphiscout

  March 15, 2019

  quality and crop yields. Discuss aphid control options with your Koppert consultant to ensure that your IPM programmes are comprehensive and robust, and able [...] important persistent and semi-persistent viruses To prevent the development of aphid colonies and virus transmission, regular introductions of Aphiscout should [...] Aphelinus abdominalis and Ephedrus cerasicola . A total of 250 wasps are released over 1-2 weeks, depending on temperature. This team of parasitic wasps has

• Pierce's disease of grapevine

  leaf scorch. Part of a green leaf suddenly dies and turns brown with adjacent tissue turning yellow or red. This desiccation spreads and the whole leaf may [...] may shrivel and drop off. Infected stems show irregular maturation and patches of brown and green tissue. In the following seasons, these infected plants [...] development and produce chlorotic shoots that are stunted. When the infection becomes chronic, the leaves become distorted with interveinal chlorosis and the shoots

• How a little predatory mite laid the foundation for biocontrol today

  June 11, 2024

  battling with persistent spider mite infestations when he struck on the idea of a natural enemy for this pest,’ Paul Koppert, former CEO and son of Jan Koppert [...] solution in the market, and years later, we are still rearing this incredibly useful mite, Phytoseiulus persimilis , and many other predatory mites. Prof [...] hectares of horticulture that specialised in greenhouse grown tomatoes, cucumbers, bell peppers and a range of flowers. ‘We had a great location and hundreds

• Downy mildew of Cucurbits

  structures are protruding from the stomata. Because there are more stomata on the underside of the leaf, this is where most fluffy symptoms are found. How to prevent [...] by the veins, which are first yellow and then turn brown. On the underside of the leave fluffy growth appears which is first white and later turns grey-brown [...] the sporulation of the pathogens extruding from the stomata. Life cycle and appearance of Downy mildew Pathogens causing downy mildew are not fungi but Oomycetes