• Citrus mealybug

  order to gain an adequate intake of protein, mealybugs must therefore ingest large quantities of sap, getting rid of the excess sugars in the form of honeydew [...] and can be hard to spot. They are smaller than the females, have two pairs of wings and two long tail filaments. Their sole task is to fertilize the females [...] attaches itself to the plant, whereas the females remain mobile throughout their entire development. After the second instar, a male nymph forms a dark brown

• Powdery mildew

  and makes it harder for the fungi to enter the leaves To reduce chances of powdery mildew in greenhouses, it is advised to first ventilate by only opening [...] dispersal of spores over small distances (limited time) mostly happens via workers’ clothing. How to prevent Powdery mildew Use resistant cultivars whenever [...] appear on the upper side of the leaves. Many sweet pepper cultivars react to powdery mildew infection by dropping leaves that are not infected yet. It

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• Transforming crop protection: the rise of predatory mites

  September 8, 2025

  is classic but powerful — from lab to greenhouse to field. And we’ve adapted formats too, like Ulti-Mite sachets, to withstand heat and humidity.” Looking [...] of crop pests. It was the perfect setting for someone eager to apply scientific curiosity to real-world agricultural challenges. At first, he joined a [...] Amblyseius swirskii to combat whitefly and thrips in Campo de Cartagena and Almeria greenhouses - two pests that had become nearly impossible to manage with chemical

• Leaf miners

  more about What are leaf miners? Leaf miners belong to the order Diptera (the true flies ) and form the family Agromyzidae. This is a family of small flies [...] enemies, allowing the leaf miner population to erupt into serious numbers. In addition, the pesticides used to control leaf miners disrupt the biological [...] most damage all belong to the genus Liriomyza and are very common in temperate regions. Leaf miner damage Leaf miners cause damage to plants both directly

• Diamond back moth

  suggested to have its origin in Europe, South Africa or East Asia, but is now present wherever its cruciferous hosts exist and it is considered to be the [...] covered with a white, loose, silken cocoon, usually formed on the lower or outer leaves. They often stick to leaves and frequently hide in crevices near the [...] occur in the florets. Initially, the pupa is pinkish-white to pinkish-yellow and changes to brown before adult emergence. The adult of the diamond back

• Phytophthora blight

  (thick-walled mycelium cells which are resistant to desiccation) or mycelium. Zoospores are formed from the overwintering structures which infect the [...] Zoospores are spores with flagellae which enable them to move through water. Infection is usually from the root to the foot, but direct infection of the foot also [...] wetness is required. Dispersal is by wind and rain causes the pathogen to be returned to the soil from infected plants. Dispersal in the soil happens via water

• About bumblebees

  will allow a bumblebee to pollinate a flower in a single visit. A honeybee typically needs to visit a flower between 7-10 times, before it is fully pollinated [...] pollination , due to their high amount of flower visits and large transfer of pollen. Bumblebee pollination result is increased yield , better formed fruit , quality [...] Bumblebees are easy to use and require low maintenance Bumblebees are safe since they are not aggressive Bumblebees include lower cost compared to manual pollination

• Fusarium spp.

  Infected glumes and kernels become white, due to dehydration, and later turn pinkish-red as spores are formed. Ear infection decreases the baking quality [...] ia), which are transported upwards. At the same time, the plant produces gum as a defence mechanism to stop the fungus from spreading. This gum blocks [...] of which DON (deoxynivalenol) is the best-known. The mycotoxins are toxic to mammals so maximum levels have been determined. Fusarium sambucinum (a.k.a

• Cannabis aphid

  between 1.8–2.7 mm long. They are normally wingless but a winged form appears in late summer. Early in the season, the aphids are nearly colourless to pale [...] resembles the hop aphid ( Phorodon humuli ), to the point that microscopic analysis of the head is required to distinguish them. The hop aphid is common in [...] become shorter, they change to light green or brown with dark green stripes running the length of the body. The winged forms have a dark head and thorax