• Bacterial spot

  like scab. These spots may be surrounded by a halo. In pepper, the spots on the leaves are also round and small to start with and slightly raised from the [...] and handling and aerosols. Many isolates are resistant to copper-containing pesticides. How to prevent Bacterial spot Use clean propagation material and [...] General Xanthomonas vesicatoria is a bacterium that causes bacterial leaf spot on peppers and tomatoes. Damage symptoms Xanthomonas vesicatoria in tomato

• Brown root rot, corky root rot

  cultivation practices. However, this fungus is a poor competitor against a balanced microbial population in soil. How to prevent Brown root rot, corky root rot [...] General Pyrenochaeta lycopersici is a fungal plant pathogen, infecting tomatoes and aubergine. It causes brown root rot and corky root rot. Damage symptoms [...] in the spring until soil temperatures are higher Mound soil around the stem to promote adventitious root growth Greenhouse crops: Steam or fumigate the soil

• Fusarium head blight or scab

  General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species [...] spores. Some also produce ascospores. In general, most Fusarium specieshave a similar life cycle. Fusarium overwinters for many years in the soil and on [...] primarily infects the older, lower leaves. The spores are dispersed upwards to the ears by splashing rain drops or wind. On the infected ears, the typical

• Gummy stem blight

  How to prevent Gummy stem blight Before cropping: Remove all crop debris and disinfect the greenhouse Choose a cultivar that is less susceptible to internal [...] General Mycosphaerella cucumis (Didymella bryoniae) is a fungal plant pathogen that causes gummy stem blight. Damage symptoms Mycosphaerella cucumis in [...] Calcium nutrition hardens the cell walls and makes it harder for the fungi to enter the leaves Pick flowers within two days after opening in areas suspected

• Amazone Plants continues the path of organic cultivation

  and I said to each other when the coronavirus crisis erupted and exports came to a standstill,’ Lex Scheffers recounts. The two partners made a remarkable [...] started to take off in 2015. In 2019, the tomato nursery also owned by Van Zijl was converted, before being added to the anthurium nursery in 2020. A remarkable [...] uses a variety of beneficials to keep these pests under control. Consultant Wim van der Meer names them for us. Amazone Plants uses Macro-Mite to combat

• Damping-off

  substrate the plant turns brown. A typical symptom of a Pythium infection is the easy stripping of the skin from the root cortex with a finger nail. Life cycle [...] appearance of Damping-off Pythium belongs to the Oomycetes, a separate group of microorganisms and is therefore not a real fungus. It survives as oospores, [...] disease to spread to neighbouring plants. The zoospores disperse via water. Therefore, this disease spreads most rapidly in wet conditions with a high water

• Southern blight

  effect, since the fungus needs to grow saprophytically on organic substrate before acting as a pathogen. Injuries make a host more susceptible, but it can [...] plants. The sclerotia can survive in the soil for a minimum of a year. The telemorphic phase corresponds to the basidiomycetes Athelia rolfsii, but this is [...] as causing rotting to the root and stem in tomato plants. Significant losses occur in soils infested by the pathogen, which have a light texture and humidity

• Aphipar

  develops inside the aphid, which converts into a leathery mummy. The adult parasitic wasp emerges through a hole at the rear of the mummy. The first mummies [...] site for at least a few days Dosage The dosage of Aphipar depends on climate, crop and aphid density and should always be adjusted to the particular situation [...] /release. Releases should be repeated at least 3 times. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best

• Root and crown rot of strawberry

  clavispora. Pestalotiopsis clavispora has been connected to strawberry diseases, but has also been linked to rose diseases. Damage symptoms Pestalotiopsis clavispora [...] stimulates disease development. How to prevent Root and crown rot of strawberry Avoid stress: Take runner tips at the right stage to avoid stress and make plants [...] Avoid overhead irrigation, since it seems to increase disease development Provide balanced nutrition Avoid damage to the plants by pest insects or plant handling

• Leaf stripe

  soil temperatures above 15 °C. How to prevent Leaf stripe Produce seed in semi-arid environments without irrigation, to decrease the chances of infection [...] General Pyrenophora graminea is a disease of Barley that causes significant yield losses. Damage symptoms Symptoms first occur on the first, second and [...] extend and become brown and chlorotic and may merge. Eventually this leads to the death of the leaf. The leaf splits at the end which makes it look shredded