Angular leaf spot

leaves, that become the primary source of infection in the spring. The bacteria are also introduced in a crop in new transplants. This bacterium is very resistant [...] resistant to desiccation and can survive well in dry leaves or leaves in the soil, but not independantly in the soil. Under humid conditions, bacteria [...] General Xanthomonas fragariae is a leaf spot disease found in strawberry. Damage symptoms Xanthomonas fragariae initially causes small, water-soaked lesions

Blight of pepper

wetness is required. Dispersal is by wind and rain causes the pathogen to be returned to the soil from infected plants. Dispersal in the soil happens via water [...] higher water content than is optimal for crop growth. Phytophthora overwinters in roots, infected tubers and bulbs or in the soil in different stages: as oospores [...] Phytophthora capsici is an oomycete plant pathogen that causes blight and fruit rot of peppers and other important commercial crops. Damage symptoms Phytophthora

Dwarf bunt

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 [...] teliospores to fall to the ground. Additionally, these teliospores contaminate healthy kernels, which in turn become a source of disease in the next season [...] transmission does occur, but is less important from an epidemiological point of view. The teliospores germinate in response to moisture and form basidiospores

Apple scab

and spore production. In autumn, the fungus produces new pseudothecia in leaves that have already fallen off the trees. In response to the infection, the [...] mechanism is to produce corky rings around the lesions to prevent further invasion of tissue by the fungus. Late fruit infection only results in small dark [...] overwinters in the form of unripe fruiting bodies in infected fallen leaves or in lesions on twigs. These unripe fruiting bodies, or pseudothecia ripen in winter

Aphids

belong to the family Aphididae, a family containing many species that cause damage in cultivated crops. The most significant aphids that occur in greenhouses [...] sap has a low protein content but is rich in sugars. Aphids therefore need to extract large quantities of sap in order to get sufficient protein. As a consequence [...] individuals. Potato virus Y (PVY) is transmitted by aphids in tomato in this way, as is the cucumber mosaic virus (CMV) in cucumber. Aphid control videos

Brown root rot, corky root rot

lycopersici survives in the soil and in buried tomato roots as microsclerotia. The microsclerotia germinate and produce mycelium that in turn infect the roots [...] Pyrenochaeta lycopersici is a fungal plant pathogen, infecting tomatoes and aubergine. It causes brown root rot and corky root rot. Damage symptoms The first [...] horizontal bands on the roots with lengthwise cracks. No discoloration is present in the xylem tissues which distinguishes it from wilts caused by Verticillium

Apple collar rot

wetness is required. Dispersal by wind and rain causes the pathogen to be returned to the soil from infected plants. Dispersal in the soil happens via water [...] higher water content than is optimal for crop growth. Phytophthora overwinters in roots, infected tubers and bulbs or in the soil in different stages: as oospores [...] are spores with flagellae, which enable them to move through water. Infection is usually from the root to the foot, but direct infection of the foot also

Phytophthora blight

wetness is required. Dispersal is by wind and rain causes the pathogen to be returned to the soil from infected plants. Dispersal in the soil happens via water [...] higher water content than is optimal for crop growth. Phytophthora overwinters in roots, infected tubers and bulbs or in the soil in different stages: as oospores [...] Zoospores are spores with flagellae which enable them to move through water. Infection is usually from the root to the foot, but direct infection of the foot also

Whitefly

which growth is retarded. In full sunlight, leaves can wilt and drop. Such leaf damage can in turn influence the development of fruit and lead to a reduction [...] sticky. Dirt adheres to the fruit, and the growth of sooty moulds ( Cladosporium spp.) is encouraged. Such fruit is unsaleable. In serious cases the fruit [...] look at the video or go to our Youtube channel to see our whitefly control products in action. More whitefly control videos How to get rid of whitefly The

Bacterial wilt, brown rot

solanacearum is a quarantine organism in Europe and considered a bioterrorist organism in the United States. It is a commonly found soil-inhabitant in tropical [...] The vascular stem tissue is coloured brown and when the stem is cut, bacterial slime oozes from the wound. This is the way to distinguish it from Verticillium [...] xylem vessels. In potato, it is tuber-borne. Spread from plant to plant results from bacteria moving from the roots of infected plants to neighbouring plants