• Cyclamen mite

  Affected plants have an unnaturally dense appearance because the petioles remain short. Severely attacked leaves become brittle, turn brown or silvery and [...] has the following stages: egg, larva, and adult. However, pharate females remain in their larval skin until they emerge. This stage is often considered a [...] a transitional stage between larva and adult mite during which the mite remains immobile on the leaf surface and does not feed.

• Bacterial wilt, brown rot

  infected tubers, the wilting and collapse of plants happens rapidly. Leaves remain green after wilting, until they are completely desiccated. Infected stems [...] high, such as during rainy periods. When temperature is low, infection may remain latent until conditions are more favourable. This makes it more difficult

• Lesser house fly

  sunlight where they remain in flight as they wait to be visited by an unmated female. Female flies are less active and tend to remain close to breeding sites

• Grape downy mildew

  symptoms Young berries turning greyish-brown and shriveling Infected berries remain small and fail to ripen Clusters appear sparse due to early berry loss [...] viticola) relies on a preventive and integrated approach. Since the pathogen remains latent before symptoms emerge, control strategies should focus on reducing

• Sciarid flies

  material. Damage symptoms The larvae of sciarid flies feed mainly on organic remains and the fungi that grow on them, although some species can also eat living [...] white, but later become yellow to brown. The posterior end of the pupa remains mobile. Recommended for you Stratiolaelaps scimitus (Hypoaspis miles) Plant

• Limonica

  dosage hole Carefully sprinkle material on leaves Make sure the material remains on the leaves for at least a few hours after introduction Can also be applied [...] limonicus performs effectively across a wide range of temperatures. It remains active and able to predate and reproduce in both cooler and warmer conditions

• Aphelinus abdominalis

  rock wool slabs or in application boxes ( Dibox ) Make sure the material remains dry and at its introduction site for a few days The dosage of Aphilin depends [...] pierce the aphid in the abdomen with her long ovipositor. The ovipositor will remain inserted for several minutes for egg deposition. Host feeding plays an important

• Broad mite

  caused by relatively low populations. Frequently, the lower leaves of a plant remain unaffected while the younger leaves are badly damaged. Most broad mites [...] found on the undersides of young, expanding leaves. Symptoms of an attack remain visible several weeks after the mites have been removed. Life cycle and

• Pepino mosaic virus

  Symptom development Symptoms can appear within 1–3 weeks, but infections may remain mild or unnoticed. Transmission PepMV spreads mainly through hands, tools

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

  February 17, 2025

  work together,” Pieter explains. “Koppert has grown tremendously, but it remains a family business at heart—focused on quality, innovation, and close re [...] company—the accessibility, the shared commitment to sustainable growing—remains.” Predatory mites: the backbone of a sustainable strategy For Stolk Brothers [...] consumers don’t always see it that way yet.” Despite the challenges, Pieter remains optimistic. “Every year, we improve. Every year, we refine our methods.