Angular leaf spot

most important, but also all types of vascular tissue of the crown can be infected, creating a look similar to that of a Phytophthora fragariae infection [...] also introduced in a crop in new transplants. This bacterium is very resistant to desiccation and can survive well in dry leaves or leaves in the soil, but [...] appearance of Angular leaf spot Xanthomonas fragariae overwinters in plants and dead leaves, that become the primary source of infection in the spring

Swirski-Mite

Pests Young larvae of various thrips species and eggs and larvae of whitefly . Crops Do not use in tomato. Mode of action Predatory mites pierce their [...] are detected in the crop. Introduction rates typically range from 25-300 per m2/release. Releases should be repeated if necessary. Consult a Koppert advisor [...] advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation. Environmental conditions Amblyseius swirskii is

Entomite-M

insects. The mites appear in and on the soil and at the base of plant stems. The reduction of the infestation level occurs at a slow but steady rate. Pack [...] detected in the crop. Introduction rates typically range from 100-500 per m 2 /release. Consult a Koppert advisor or a recognized distributor of Koppert [...] Pests Eggs, larvae and pupae of sciarid flies ; thrips pupae. Mode of action The predatory mites feed on larvae of sciarid flies , thrips pupae and other

Damping-off

mostly occurs in young plants and damage is more extensive in young crops. Damage symptoms Pythium affects roots, in particular those of seedlings. Infected [...] and very little of the root system survives. On the border between air and soil or substrate the plant turns brown. A typical symptom of a Pythium infection [...] stripping of the skin from the root cortex with a finger nail. Life cycle and appearance of Damping-off Pythium belongs to the Oomycetes, a separate group

Bacterial wilt, brown rot

is a plant pathogenic bacterium. It is a soil-borne disease and colonises the xylem, causing bacterial wilt and brown rot in a very wide range of potential [...] appearance of Bacterial wilt, brown rot Ralstonia solanacearum is a quarantine organism in Europe and considered a bioterrorist organism in the United [...] temperatures of 35-37 °C, the optimum for Race 3 is 27 °C, which makes it more dangerous in temperate regions. It survives well in water and in many different

Botrytis

plants or plant parts in a closed plastic bag In tomato: prune with a knife and not by hand, to avoid rugged, irregular wound surfaces In cucumber: remove dead [...] 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 [...] Botryotinia fuckeliana / Botrytis cinerea ) is a commonly found fungus in many environments. It survives in plant parts like bulbs and crop residues or as

Spidex

repeated once or twice at weekly intervals. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for [...] Tetranychus urticae ) and other Tetranychus spp., except Tetranychus evansi . Mode of action Predatory mites pierce their prey with their sucking mouthparts and [...] chips. Application Turn and shake the bottle gently before use Push the centre of the cap to open the dosage hole Sprinkle material on leaves or pour into Diboxes

Early blight

and at a relative humidity (RH) of over 90% or when the leaves are wet. Small differences in optimum temperature occur between species, but in general [...] rotation, in particular when spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving [...] stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection of the

Cottony soft rot

cottony soft root, is a plant pathogenic fungus. It has a very wide range of host plants. Damage symptoms The first symptoms of a cottony soft root ( S [...] death of plants. Life cycle and appearance of Cottony soft rot Cottony soft root ( Sclerotinia sclerotiorum ) overwinters as sclerotia and mycelium in dead [...] and infection mostly take place at high soil water content over a prolonged period of time. The sclerotia germinate directly and form mycelium or produce

Obscure mealybug

effect is a reduction of photosynthesis and therefore the yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low in proteins. In order [...] an adequate intake of protein, mealybugs must therefore ingest large quantities of sap, getting rid of the excess sugars in the form of honeydew. Charac [...] originates from South America, but can now be found in many parts of the world with a temperate climate. It has a very similar appearance to the citrus mealybug