• Grapevine powdery mildew

  symptoms of Grapevine powdery mildew Symptoms of grapevine powdery mildew vary according to the phenological growth stage and the severity of the infection [...] ity Lifecycle of Grapevine powdery mildew The lifecycle of grapevine powdery mildew (Erysiphe necator) is closely synchronized with the vine growth stages [...] sources of infections. Once established, the fungus transitions into its asexual phase, producing large quantities of conidia. These spores are highly adapted

• Thripex

  Application Turn and shake the bottle or bucket gently before use Bottle: Push the centre of the cap to open the dosage hole Bucket: Use a spoon to distribute [...] should always be adjusted to the particular situation. Start introduction as soon as the first pest mites are detected in the crop. Introduction rates typically [...] be repeated if necessary. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for your situation.

• Obscure mealybug

  covered with a thicker layer of wax, the filaments around the body are longer (20-50% of the body size) and the two tail filaments are always markedly longer [...] appearance of Obscure mealybug Mealybugs get their name from the fact that the body of the females from the third nymphal instar onwards are covered with a white [...] spp .) are often found growing on this honeydew. Additionally, the white, waxy secretion of the mealybugs, reduces the ornamental value of the affected

• Apple scab

  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 causes [...] which carry conidia, are formed which extend through the cuticula. The asexual conidia are released and repeat the cycle of infection of new plant parts and [...] bud scales. The lesions are olive-green. When spores are produced, the lesions become grey and fluffy. The lesions caused by ascospores are more restricted

• Fit roots for plant health

  Roots are the physical foundation of the plant in the soil or substrate, and they take up water, minerals and metabolites to be transported to the leaves [...] many functions: • They form a barrier against root diseases, • and can even act as a fungicide. • Some of them are involved in the nutrients cycle, • or induce [...] white paper elaborates on the micro life in the root zone which is often underestimated in the current practice but plays a key role in plant health and

• Grape downy mildew

  development pose the greatest risk to crop performance. Early symptom detection, a clear understanding of the disease cycle, and vigilant monitoring of high-risk [...] suited for the preventive management of grape downy mildew. Tiagan is Koppert’s biofungicide for the control of grape downy mildew and is based on a lysate [...] 10°C in the presence of soil moisture, leading to the formation of macrosporangia that release motile zoospores within 24 hours. These zoospores are dispersed

• Apple collar rot

  damping off, a reduced root system and black discolouration of the roots. On the foot, dark brown lesions with sharp borders occur. Above the graft and on [...] cells which are resistant to desiccation) or mycelium. Zoospores are formed from the overwintering structures, which infect the host. Zoospores are spores with [...] from the root to the foot, but direct infection of the foot also occurs. Exudates leaking from growing root tips promote germination and attract the zoospores

• Phytophthora blight

  fungal growth on the leaves. The centre is grey-brown with a light-green edge. On the stem, elongated brown lesions occur, usually circling the stem. On potato [...] through the skin. The Great Famine was a period of mass starvation caused by this disease which ravaged potato crops throughout Europe during the 1840s. [...] cells which are resistant to desiccation) or mycelium. Zoospores are formed from the overwintering structures which infect the host. Zoospores are spores with

• American vine leafhopper

  white and also have the pair of spots at the tip of the abdomen. There is one generation per year. The eggs are laid on the bark of grapes where they overwinter [...] in many countries. The macro shot of the Scaphoideus titanus, is an insect of the leafhopper family (Cicadellidae). Damage symptoms The American vine leafhopper [...] shrivel resulting in a reduction of quality and yield of the crop. Woody canes are poorly ripened and remain rubbery, giving the stock an overall 'weeping'

• European vine moth

  bluish-grey markings. The hindwings of the female are dark brownish grey and the hindwings of the male are whitish grey. The eggs are 0.7 x 0.6 mm and yellowish [...] place nearby. Moths of the next generation appear about a week later. The larvae of the second generation feed on the developing clusters of grapes. Their [...] very rapid if the conditions are favourable and a further 1-2 generations may be completed in the same season. The pupae overwinter in a cocoon under bark