Angular leaf spot

sprinkler irrigation is used. Healthy, well growing plants are more susceptible than diseased or stressed plants. How to prevent Angular leaf spot Use clean [...] underside of the leaf. This exudate changes to a white film when it dries. Lesions may merge as they grow and later also become visible on the upper side [...] causes small, water-soaked lesions on the underside of the leaf. They enlarge to angular spots, often limited by the small veins. The distinctive feature is

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 [...] pepper cultivars react to powdery mildew infection by dropping leaves that are not infected yet. It depends on the cultivar how soon after infection this [...] over small distances (limited time) mostly happens via workers’ clothing. How to prevent Powdery mildew Use resistant cultivars whenever available Extra

Grey mould

weakened or damaged plants. How to prevent Grey mould Make sure the crop grows regularly with not too much vegetative growth, in order to maintain a microclimate [...] usually small round specks occur first, called ‘pocks’. These may or may not grow into larger grey-brown lesions. The symptoms on fruits, flowers and on various [...] Botrytis cinerea ) affects the fruit. In potted plants, the cuttings die due to carry-over infection from infected parent plants. Life cycle and appearance

Parasitoid wasps

crops throughout the growing season. Biodiversity and ecosystem balance: The introduction of parasitoid wasps into commercial growing environments can promote [...] outbreaks of specific pest species. How do parasitoid wasps control pests? Parasitoid wasps employ two primary methods to control pests: parasitisation and [...] body or attaches them to the host's exterior. Larval development: When the parasitoid wasp eggs hatch, the newly emerged larvae begin to feed on the host pest

Cabbage moth

of Cabbage moth The adult cabbage moth (Mamestra brassicae) has grey-brown to black forewings, with a kidney-shaped white-rimmed marking in the middle. [...] Several days after emerging from their pupae the female moths lay clusters of 20 to 100 eggs on the underside of leaves or elsewhere within the greenhouse structure [...] becoming steadily darker until they are a brown-black or sometimes even a purple colour. They are ridged and have a light network of markings. First instar

Phytophthora blight

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 [...] also occurs. Exudates leaking from growing root tips promote germination and attract the zoospores. The pathogen grows into the stem and on the plant surface [...] 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

Caterpillars

at the video or go to our Youtube channel to see our caterpillar control products in action. More caterpillar control videos How to get rid of caterpillars [...] plant tissue. Many species cause damage to crops. The most harmful caterpillars that occur in greenhouses belong to the Noctuidae (the noctuid or owl moths) [...] name ‘leafroller’ refers to the fact that the caterpillars often live in rolled-up leaves. Although some species are restricted to a single crop, most are

Grower Koen - Embracing biological crop protection in agriculture

the opportunity to continue the business. While the trend towards organic farming was growing, Koen felt that it would be too quick to completely abandon [...] bodies, in organic farming marks the path to the future. "You grow into it a bit," notes Koen. With the growing availability of knowledge and the number [...] abandon traditional methods. He decided to find a balance between both approaches. This way of working allows him to gain experience in using biological crop

Downy mildew of Cucurbits

can take up nutrients from the living plant cells. The pathogens continue to grow inside the leaves and after a while new spore-bearing structures are protruding [...] the underside of the leaf, this is where most fluffy symptoms are found. How to prevent Downey mildew Choose resistant cultivars Use a wide crop rotation [...] mildew Pathogens causing downy mildew are not fungi but Oomycetes and related to Pythium and Phytophthora. They survive as oospores. From these oospores or

Nothing beats original

or want to make a purchase, our team is here to support you every step of the way. Don't let pests compromise your harvest. Contact us now to discover [...] providing a sustainable alternative to chemical pesticides. Meet Koppert’s innovative lineup of predatory mites. Our commitment to continuous innovation and refinement [...] mites are applied to effectively control pests like whitefly , thrips , and spider mites . Choosing the right predatory mite solution to control a pest