Grape powdery mildew

powdery patches on the affected plant parts. All the above ground plant parts are susceptible to infection. Powdery growth on both the surface of the leaves [...] coloured. Shredding of flowers and poor fruit set due to floral infections. Early infected berries become malformed, cracking of skin of berries, shred and [...] formation if the infection occurs early. Disease cycle Powdery growth of the fungus consists of mycelium, conidiophores and conidia. Dormant mycelium and conidia

Leaf stripe

disease of Barley that causes significant yield losses. Damage symptoms Symptoms first occur on the first, second and third leaf and subsequently on other [...] the base of the leaf and the leaf sheath. They gradually extend and become brown and chlorotic and may merge. Eventually this leads to the death of the leaf [...] and the number of kernels may be reduced and kernels may be brown. The symptoms do not always occur together. Life cycle and appearance of Leaf stripe P

Apple collar rot

system and black discolouration of the roots. On the foot, dark brown lesions with sharp borders occur. Above the graft and on leaves, dark brown, irregular [...] pathogen grows into the stem and on the plant surface and new sporangiophores (structures containing sporangia, a type of spores) with sporangia are formed [...] Phytophthora cactorum is a plant pathogen that causes root rot, rhizome rot of strawberry, apple rot, apple collar rot and crown rot. It has an extremely

Precautionary measures for product allergies

allergy. On this page, we advise you on the precautionary measures you can take to prevent or reduce any allergic reactions caused by the type of products [...] doctor. In case of a life-threatening situation call the emergency medical services immediately. A combination of factors The level of sensitivity differs [...] Which products are of concern? This concerns the predatory mites , feeder mites, and supplementary feeding products sold by Koppert. Icons on the product packaging

Greenhouse whitefly

The larvae of whitefly need a lot of protein for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and [...] 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 sunlight [...] development of fruit and lead to a reduction in yield. The honeydew deposited on fruit makes it sticky. Dirt adheres to the fruit, and the growth of sooty moulds

Bacterial wilt, brown rot

very wide range of potential host plants. Damage symptoms In potato, field symptoms of Ralstonia solanacearum are wilting and yellowing of leaves and stunted [...] leaves are affected first. They show signs of wilting during the day which may disappear in the early stages of infection. Under conditions favourable for [...] for disease development, the plants may show signs of stunting and produce many adventitious roots on the stem. The vascular stem tissue is coloured brown

Beetles

crop Life cycle of beetles Beetle damage Both larvae and adults of beetles can cause damage to crops. The larvae of some species feed on growing tips and [...] belong to the order Coleoptera, a well-known group of insects that are easily recognizable on account of their hard wing covers (elytra). With more than 350 [...] species, Coleoptera is the largest of all insect orders and displays an enormous variety of form, size and habit. A number of species are a serious pest in

Brown root rot, corky root rot

more and more destruction of the root system and subsequent loss of vigour and further wilting. Life cycle and appearance of Brown root rot, corky root [...] corky root rot. Damage symptoms The first signs of this disease, are poorly looking plants in localized areas of the greenhouse or field. The affected plants [...] lesions. On older roots, the outer layers become swollen and corky and gradually break off. The corky areas often occur as horizontal bands on the roots

General Conditions Koppert

compensation T of any damages suffered in any manner as a result of late delivery, excepting in cases of intent or gross negligence on the part of Koppert. The [...] I n case of liquidation, insolvency, suspension of payments, bankruptcy, transfer of business or merger or divestment of the Buyer; vesting of a pledge [...] damage as a result of loss of harvest, crop damage and/or damage due to deterioration of the structure of the soil. The payments of damages claimed shall

Flies

and indirectly. The type of damage depends on the species of the flies. Direct damage is the immediate result of larvae feeding on root hairs and tender roots [...] particularly small flies of the families Sciaridae (sciarid flies) and Ephydridae (shore flies). The larvae of these insects generally live on rotting plant material [...] to plants, they are often a problem due to their large number. Larvae of flies of the family Keroplatidae (mainly Lyprauta sp.) can cause damage in potted