• Bacterial spot

  resistant to copper-containing pesticides. How to prevent Bacterial spot Use clean propagation material and disease-free seed Remove sources of inoculum [...] leaves In field-grown tomato and pepper rotate fields to prevent infection from volunteer plants and crop debris Avoid waste piles in the vicinity of the [...] 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

• Gummy stem blight

  tools and hands of workers. The ascospores are the main source of dispersal of disease upwards in the crop and the conidia for spread of the disease downwards [...] harder for the fungi to enter the leaves Pick flowers within two days after opening in areas suspected of disease (only feasible in high-wire crops) Pick [...] downwards. How to prevent Gummy stem blight Before cropping: Remove all crop debris and disinfect the greenhouse Choose a cultivar that is less susceptible

• Bacterial soft rot, bacterial stem rot

  various plants or in the soil in low densities. It has also been found in the gut of insects, possibly spreading from decaying vegetation to the growing crop [...] secondary pathogen in plants that are infected by other pathogens. The bacteria that causes black leg in potato is a different subspecies. How to prevent Bacterial [...] wilt at the time of first harvest or after that. The pith disintegrates and the stem becomes hollow. Because of the bacterial growth in the pith, the stem

• Verticillium wilt

  presence of both the fungus and the gum causes the xylem vessels to get blocked, which in turn causes the plant to wilt. Spores may be wind-dispersed to new [...] 25-27 °C. How to prevent Verticillium wilt Start with clean soil or substrate by heating it at a temperature if at least 65 o C for a minimum of 30 minutes [...] pale-green, then orange-yellow. In the beginning the plant seems to recover at night. The symptoms may occur only in parts of the plant. Cutting the stalk

• Grey mould

  ventilation in greenhouse crops Remove diseased plants or plant parts in a closed plastic bag In tomato: prune with a knife and not by hand, to avoid rugged [...] 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 which [...] Botrytis cinerea ) is part of the foot rot complex, which causes rotting of the foot and may cause death of the plants. In cucumber and tomato the fungus

• Effective spider mite control with predatory mites

  we have further specialized in producing a big range of natural enemies and have several patents to our name. Our stability in breeding, quality, reliability [...] pests in horticulture, damaging crops rapidly and thriving in hot, dry conditions. Their resistance to chemical pesticides makes biological control a critical [...] health. Koppert is the pioneer in the development of predatory mite solutions, starting in 1967 with the production of the predatory mite Phytoseiulus

• Hemispherical scale

  appearance of Hemispherical scale An adult female of S. coffeae has a hemispherical form with a smooth surface. The colour is usually dark to sometimes [...] Saissetia coffeae , occurs widely in tropical regions and in greenhouses throughout the world. It is a severe pest in coffee and citrus. Many ornamental [...] the host plant and can vary from 2 to 4.5 mm. The young nymphs are white to yellowish, more oval in form and with a raised H-pattern on the dorsal surface

• Wheat bunt

  kernels, which in turn become a source of disease in the next season. Infection is strongly correlated to temperature and precipitation in the first 11 days [...] appearance of Wheat bunt Tilletia tritici and Tilletia laevis survive as teliospores in the soil or on seed. These teliospores germinate in response to moisture [...] the whole kernel becomes a bunt ball full of teliospores. These balls break during harvest allowing the teliospores to fall to the ground. Additionaly,

• 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 [...] ascospores. In general, most Fusarium specieshave a similar life cycle. Fusarium overwinters for many years in the soil and on crop residues of infected plants [...] Warm (25-30 °C) and humid (RH above 85%) conditions increase chances of infection. How to prevent Fusarium head blight or scab Remove or destroy crop residues

• Vidi Fortum

  Mode of action Vidi Fortum contains seaweed extract with a guaranteed content of 1% betaine. Seaweed extract reduces water stress thus leading to better [...] half the required amount of water Add the required amount of Vidi Fortum to the water Mix thoroughly Add the remaining amount of water Apply immediately [...] after planting of the crop Application rates typically range from 3-5 litres/ha Applications should be repeated a number of times Consult a Koppert advisor