• Bacterial canker of tomato

  primary infection is mostly from infected propagation material. It spreads to other seedlings by touching the plants in greenhouse crops and by water in field [...] lavibacter infection, but other than that the disease is difficult to distinguish from wilting caused by other pathogens. On potato tubers, first discolouration [...] tubers. This discolouration is round, hence the name ring rot. Life cycle and appearance of Bacterial canker of tomato Clavibacter is seed-borne and tuber-borne

• Apple collar rot

  infection is either by germinating sporangia or by zoospores produced in the sporangia. For germination on above-ground plant parts, leaf wetness is required [...] fast drying and wound healing, by allowing air circulation Disinfect recirculating nutrient solutions Prevent plant diseases by optimizing plant potential [...] General Phytophthora cactorum is a plant pathogen that causes root rot, rhizome rot of strawberry, apple rot, apple collar rot and crown rot. It has an

• Gummy stem blight

  In cucumber, the most important symptom is internal fruit rot, which can only be recognized from the outside by the small narrowing of the tip of the mature [...] wounds and by the infected leaves through the petioles. Fruits are infected through the flowers. The newly produced ascospores are dispersed by air and the [...] General Mycosphaerella cucumis (Didymella bryoniae) is a fungal plant pathogen that causes gummy stem blight. Damage symptoms Mycosphaerella cucumis in

• Southern blight

  southern blight is a disease caused by the fungus Athelia (Sclerotium) rolfsii . It is an important plant pathogen that inhabits the soil, and is responsible [...] fungus Athelia (Sclerotium) rolfsii is characterized by the production of vigorous mycelium. When the mycelium is young it is white; later it darkens. There [...] cotyledons, and roots. The main damage caused by damping-off is reduction of the stand, meaning it is very often necessary to replant, which increases

• Apple scab

  become grey and fluffy. The lesions caused by ascospores are more restricted, whereas the lesions caused by conidia extend faster and may merge. Infected [...] . The plants’ defence mechanism is to produce corky rings around the lesions to prevent further invasion of tissue by the fungus. Late fruit infection [...] sed to the fruit trees and will germinate if free water is available. They infect the plant by direct penetration of the cuticula and then grow between

• 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

• 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

• Fusarium head blight or scab

  density. The foot of the plant is infected, either because the seedling was infected or by direct infection of the foot by overwintering inoculum. On the [...] 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 [...] mycelium cells) or mycelium. Survival is also possible on seed, greenhouse structures, tools and machinery. Primary infection is either seed-borne or takes place

• 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