Grey mould

fuckeliana / 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 [...] infection from infected parent plants. Life cycle and appearance of Grey mould Spores of grey mould ( Botryotinia fuckeliana / Botrytis cinerea ) need moisture [...] Botrytis cinerea ) is a necrotrophic fungus, meaning that it excretes compounds that kill the plant cells and then uses the content of the plant cells as

Gummy stem blight

tools and hands of workers. The ascospores are the main source of dispersal of disease upwards in the crop and the conidia for spread of the disease downwards [...] most important symptom is internal fruit rot, which can only be recognized from the outside by the small narrowing of the tip of the mature fruits. The [...] water is present on the plant, at high relative humidity (RH) and on wounds. Leaves can be infected directly, through wounds, hydathodes (the end of leaf

Black leg of seedlings

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 is the [...] the easy stripping of the skin from the root cortex with a finger nail. Life cycle and appearance of Black leg of seedlings Pythium belongs to the Oomycetes [...] conditions, especially dehydration. Germination of the oospores is stimulated by exudates from roots of a susceptible host nearby. The oospores germinate

Flowering potted plants

Begonia is a perennial flowering plants and belongs to the family of Begoniaceae . The genus consists of 1,795 different plant species. Some of these species [...] Kalanchoe is a tropical, succulent flowering plant and a genus that consists of about 125 species belonging to the family of Crassulaceae . Hibiscus is well [...] yellow and purple. Phalaenopsis is also known as the moth orchid. Its genus consists of some 60 species. The Phalaenopsis is an extremely popular flowering

Sweet pepper

pepper or just pepper, is part of a specific group of cultivars that belongs to the species Capsicum annuum . These different cultivars of the sweet pepper plant [...] dark purple and brown. The sweet pepper is a very rich source of vitamin C and antioxidants. The level of carotene is even nine times higher in red peppers

Vine mealybug

shape and has no wings. The body is covered with a fine waxy material and have 18 pairs of wax rods round the edge of the body, and two slightly longer [...] causing deformation and / or yellowing of leaves, sometimes followed by defoliation. The overall effect is a reduction of photosynthesis and therefore the yield [...] Plant sap is rich in sugars, but low in proteins. In order to gain an adequate intake of protein, mealybugs must therefore ingest large quantities of sap, getting

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 [...] es: 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 [...] transmitted. The consumption of plant sap and secreting of honeydew by whiteflies reduce the aesthetic value of crops. This is particularly important in

Tobacco whitefly

level of resistance to many insecticides and its propensity for the transmission of viruses. Damage symptoms The larvae of whitefly need a lot of protein [...] es: 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 [...] n. Bemisia tabaci is known for the transmission of viruses, including TYLCV in tomato. The consumption of plant sap and secreting of honeydew by whiteflies

Potato aphid

stripe is dark green, while in pink specimens it is dark red. This longitudinal stripe is specifically characteristic of the potato aphid and is particularly [...] aphid ( Macrosiphum euphorbiae ) is of North American origin, but is these days distributed throughout the world. It is a highly polyphagous species with [...] 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 and its fruit

Glasshouse potato aphid

glasshouse potato aphid ( Aulacorthum solani) is a native European species of aphids , seriously affecting crops of sweet pepper in particular. These aphids [...] the fruit of sweet pepper it secretes a toxic substance, which leads to deformations in the growing tip of the plant. Precisely where the plant is pierced [...] their presence in the crop. The wingless adult stage of the greenhouse potato aphid is rather squat, of medium size (1.8 - 3.0 mm long) and oval in shape