• Early blight

  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 [...] lesions on stem and foot. On fruits, dark sunken, leathery lesions occur at the side of the stem. Life cycle and appearance of Early blight From the primary [...] spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving conidia in the soil. Use resistant

• Experience Centre

  AM to 5:00 PM. A tour takes an average of 1,5 hours and is suitable for groups of up to 15 visitors. In the case of bigger groups, the programme can be [...] in consultation. The Experience Centre may be visited by appointment only. Interested? Please fill in the request form below. Make a reservation [...] natural pollination , come and visit the Koppert Experience Centre where you can take an interactive journey through the fascinating world of sustainable

• Apple scab

  free water is available. They infect the plant by direct penetration of the cuticula and then grow between the cuticula and the epidermis of the plant cells [...] this happens faster so the lesions remain smaller. Based on the research that has been done on the influence of climatic conditions on release of ascospores [...] already fallen off the trees. In response to the infection, the plants produce cork as a defence against further growth of the fungus. In cultivars that

• Transeius montdorensis

  of the cap to open the dosage hole Carefully sprinkle material on leaves Make sure the material remains on the leaves for at least a few hours after in [...] twice, or until control is achieved. Consult a Koppert advisor or a recognized distributor of Koppert products for advise on the best strategy for your [...] sachets by the cardboard strip at the top, to avoid damaging the predatory mites The dosage of Montdo-Mite Plus and Montdo Ulti-Mite depends on climate,

• Crazy roots, hairy roots, crown gall

  caused by a change in the hormonal system of the plant resulting from the Rhizobium infection. Rhizobium rhizogenes puts a Ri-plasmid in the plant tissue [...] crown gall The primary source of infection by Rhizobium rhizogenes has not yet been defined. The assumption is that the bacteria survive in the soil, but [...] galls on the stems, which are first white and later turn brown. Only Rhizobium radiobacter causes galls and tumours on underground plant parts and on the

• Dwarf bunt

  heads. The glumes are opened either on some or on all spikelets, showing the bunt (smut spore) they contain, which is larger than a normal kernel. The bunt [...] sporidia infect the wheat seedlings even before emergence and the fungi grow inside the plants to the growing tip. The fungi grow between the plant cells and [...] General Tilletia controversa is a plant pathogen. It is a fungus known to cause the smut disease TCK smut in soft white and hard red winter wheats, as

• Amblydromalus limonicus

  limonicus is used for the control of the following pests: Thrips Whitefly Amblydromalus limonicus is a generalist predatory mite feeding on whiteflies [...] Amblydromalus limonicus is not recommended as it is hindered by the glandular hairs on the stems and leaves and does not build up a population. How to use [...] cap to open the dosage hole Carefully sprinkle material on leaves Make sure the material remains on the leaves for at least a few hours after introduction

• Phytoseiulus persimilis

  to feed on spider mites. The quantity of prey consumed depends on the predator and prey populations, the sex and age of the predator, and the temperature [...] use Push the centre of the cap to open the dosage hole Sprinkle material on leaves or pour into Diboxes Make sure the material remains on the introduction [...] s persimilis is used for the control of the following pests: Spider mites Phytoseiulus persimilis mites actively seek out and prey on the Two-spotted spider

• Rhyzobug

  Open the cap and tap the beetles directly on the plants. Be aware that adults may not fly away immediately after release. Dosage The dosage of Rhyzobug [...] armoured scales are detected in the crop. Releases should be repeated until control is achieved. Consult a Koppert advisor or a recognised distributor of Koppert [...] depends on climate, crop and armoured scale density and should always be adjusted to the particular situation. Start introduction as soon as the first armoured

• Greenhouse whitefly

  rods. This is called the pupa stadium and these pupae are found on the oldest leaves. The adult emerges from the pupa via a T-shaped fissure. The adult whiteflies [...] quantities. The damage that whiteflies cause to a crop is the result of sucking out the sap from the plant leaves and secreting honeydew. This can have the following [...] consequences: If the population is very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In full