• Black leg of seedlings

  a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress, caused for example by too [...] yellow, for example in flower bulbs. At first, the plants recover during the night, but later the plants wilt irreversibly. In potted plants the flower buds fall off. The side roots rot and very little

• Black root rot of cucurbits

  light-brown and sunken, later black with amber-coloured exudations of spores. In the early [...] in the soil and is a strong saprophytic competitor, which means it can rapidly [...] conditions for years in the soil, but little else is known about the life cycle. The fungus

• Deltatrap

  Use the Deltatrap for monitoring and trapping male moths and mealybugs in protected and outdoor crops in combination with a species-specific pheromone. Pests Moths and mealybugs . [...] pheromone which lures the males of the particular pest into the trap. Once in the trap they get stuck in the glue and are easy to detect, count and identify

• Pierce's disease of grapevine

  known in grapevine, stone fruit (peach and plum) and citrus, where it causes diseases [...] happens faster in younger vines than in older ones and faster in susceptible cultivars (within [...] The bacteria live in xylem vessels in roots, stems and leaves and multiply. The plant may react

• Root rot of carrot

  germination in vitro requires free water. The pH for growth, sporulation, and spore [...] intercellular mycelium. Conidia buried in nonsterile soil remained viable at 0°C and 3°C for 12 months, at 6°C for 6 months, and at 12°C for 2 months, indicating a capacity to overwinter in cold regions

• Flies

  mites target fly larvae in the soil, while traps and attractants reduce adult populations and support [...] suzukii , has recently developed into a major pest on soft fruits in Europe and North America. Sciarid flies and shore flies are mainly a problem in greenhouses. Their larvae live in the ground and prefer moist substrates

• Powdery mildew

  first and foremost on the upper side of the leaf. In severe epidemics in cereals, [...] mostly occur in these crops. In covered roses, the colonies appear first and foremost on [...] , structures containing ascospores. Ascospores have not been found yet for all powdery mildew fungi and especially in greenhouse crops they don’t play

• Bacterial wilt, brown rot

  organism in Europe and considered a bioterrorist organism in the United States. It is a commonly found soil-inhabitant in tropical and subtropical regions and is transferred by the introduction of [...] survives well in water and in many different soil types and on alternative hosts like weeds

• Verticillium wilt

  discolouration caused by Fusarium . The root system usually stays mostly intact. In rose, branches die off from the top and purple brown stripes occur on the [...] wounds caused by for example nematodes. The fungus then grows into the vessels of the plant and [...] the transpiration stream. As a defence mechanism, the plant produces gum in the vessels. The presence of both the fungus and the gum causes the xylem

• Beetles

  nematodes Insect traps Pheromone traps Beneficial nematodes actively seek out and eliminate beetle larvae in the soil, while traps help monitor and reduce [...] are a serious pest in crops or stored products. There are many useful beetles as well. For instance [...] feed on growing tips and roots or chew and bore into stems, but in other species also feed on leaves