• Cottony soft rot

  occur on stems but also on leaves, fruits and pods. Root infection often leads to premature wilting and death of plants. Life cycle and appearance of Cottony [...] thereby creating a source of infection for the next crop. The dispersal to neighbouring plants is by mycelial growth. How to prevent Cottony soft rot Practice [...] 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

• Powdery mildew

  the plant cell and takes up nutrients from the epidermal layer of plant cells. Most of the fungus remains on the outside of the plant surface. On the mycelium [...] underside of the leaf. On the upper side, yellow spots are noticeable. In case of a severe epidemic, the fluffy colonies also appear on the upper side of the [...] the fungi to enter the leaves To reduce chances of powdery mildew in greenhouses, it is advised to first ventilate by only opening the windows on the lee

• Grape mealy bug

  Malformation of leaves and shoot tips due to infestation of growing points. Honey dew secretion of mealy bugs support sooty mould growth on infected area [...] often die due to severe infestation of mealy bugs. Feeding damage in grapes is minimal but the marketability is greatly affected due to its cottony egg [...] bugs on grape berries. Infected bunches are not suitable for making raisins. Life cycle and appearance Mealy bugs are found in crevices of stem, on leaves

• Knowing & recognizing

  biopesticides and biostimulants that increase the plant’s resilience to stress and help the plant to grow better and remain healthier. Koppert believes [...] Get the growers’ guide to biological crop protection Knowing and recognizing does exactly what it implies. It empowers you with knowledge about the pest’s [...] many phases, as well as giving you the ability to recognize the pest or disease you are up against by means of detailed illustrations and close-up photographs

• Southern blight

  in the plant start yellowing. Severely affected plants present girdling of the stem, which causes wilting of the upper part, necrosis, loss of leaves, [...] destruction of the cortex and the main root. In highly humid conditions, white mycelium growth is observed on the plant’s stem, which may also develop on the adjacent [...] and death of the plant. Symptoms begin with brown, aqueous lesions on the stem. As the damage progresses, it causes darkening and rotting of the stem,

• Cotton aphid

  Aphids therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop [...] extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if [...] colour depends on temperature, food source and the density of the population. Large individuals (up to 1.8 mm long) are usually dark green to black, while

• Verticillium wilt

  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 horizontally reveals [...] infects the roots of plants, directly or through wounds caused by for example nematodes. The fungus then grows into the vessels of the plant and produces spores [...] defence mechanism, the plant produces gum in the vessels. The presence of both the fungus and the gum causes the xylem vessels to get blocked, which in turn

• Angular leaf spot

  lesions on the leaves and form a secondary source of infection. They are dispersed by rain, irrigation water or handling of the plants. Infection of the plants [...] are humid, a viscous bacterial exudate forms on the underside of the leaf. This exudate changes to a white film when it dries. Lesions may merge as they [...] 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

• Potato aphid

  Aphids therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop [...] extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if [...] occurs early enough in the season, the death of young plants. Retarded growth and defoliation reduce yield. Plant sap is rich in sugars, but has a low protein

• Tobacco aphid

  Aphids therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop [...] are also capable of dispersing through the crop by walking. The tobacco aphid tends to form denser colonies, closer to the top of the plant, than the peach [...] extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if