• Phytophthora blight

  infection is either by germinating sporangia or by zoospores produced in the sporangia. For germination on above-ground plant parts, leaf wetness is required [...] 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, since [...] fast drying and wound healing, by allowing air circulation Disinfect recirculating nutrient solutions Prevent plant diseases by optimizing plant potential

• Downy mildew of rose

  stomata or directly by penetrating the cuticula. For germination free water is required. For most downy mildews, the optimum temperature is around 15 °C. The [...] surface, bordered by the veins, which are first yellow and then turn brown. On the underside of the leaf fluffy growth appears which is first white and later [...] later turns grey-brown. This is, in fact, the sporulation of the pathogens extruding from the stomata. In lettuce, the foot is infected first and this causes

• General Conditions Koppert

  an order placed by the Buyer, provided this confirmation is signed by a person who is authorized to enter into the agreement; b. by the reaching of [...] form which is used by Koppert and the signing thereof by Koppert’s representative and the Buyer, unless Koppert notifies the Buyer in writing by not later [...] article 6.1, the Buyer is in breach without any further notice of default. 6.7 s soon as the Buyer is in breach, the Buyer is obliged to pay to Koppert

• Angular leaf spot

  often limited by the small veins. The distinctive feature is the way the lesions look when using different light sources: when reflected light is used, the [...] General Xanthomonas fragariae is a leaf spot disease found in strawberry. Damage symptoms Xanthomonas fragariae initially causes small, water-soaked lesions [...] the lesions look dark green, but when transmitted light is used, they are translucent. When conditions are humid, a viscous bacterial exudate forms on the

• Bacterial wilt, brown rot

  transported by irrigation water. Disease incidence is highest when soil moisture is high, such as during rainy periods. When temperature is low, infection [...] stem. The vascular stem tissue is coloured brown and when the stem is cut, bacterial slime oozes from the wound. This is the way to distinguish it from [...] General Ralstonia solanacearum is a plant pathogenic bacterium. It is a soil-borne disease and colonises the xylem, causing bacterial wilt and brown rot

• Pea blight, leaf and pod spot

  brown, sunken and surrounded by a dark brown to red-brown border. The first infection is often on the primary leaves. The fungus is seed borne and thus also [...] two-celled conidia are exuded. Secondary infection is by splash dispersal of these conidia. There is no known sexual stage. Ascochyta fungi develop most [...] General Ascochyta pisi is a fungal plant pathogen that causes A scochyta blight on pea (leaf blight or pea blight) and lesions of stems, leaves, and pods

• Early blight

  petals and stems. These spots can be distinguished by the dark and brown concentric rings that are caused by sporulation. Species may differ in specific symptoms [...] sporulation within five days. Infection is both direct and through wounds and stomata. Spores are dispersed by wind and in some species through the splash [...] General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause

• Damping-off

  le conditions, especially dehydration. Germination of the oospores is stimulated by exudates from roots of a susceptible host nearby. The oospores germinate [...] General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress [...] stress, caused for example by too much water, too high or low temperatures or sudden fluctuations in temperature. Pythium aphanidermatum mostly occurs at

• Veni Biosulfur

  sulphur taken up by the plant. Crops All crops. Mode of action Veni Biosulfur increases the amount of sulphur taken up by the plant. Sulphur is an essential

• Cottony soft rot

  the above-ground plant parts. In greenhouses, usually only mycelium is produced by the germinating sclerotia. The fungus grows quite rapidly inside the [...] source of infection for the next crop. The dispersal to neighbouring plants is by mycelial growth. How to prevent Cottony soft rot Practice dry cultivation/be [...] General Sclerotinia sclerotiorum, also known as cottony soft root, is a plant pathogenic fungus. It has a very wide range of host plants. Damage symptoms