• Bacterial wilt, brown rot

  potential host plants. Damage symptoms In potato, field symptoms of Ralstonia solanacearum are wilting and yellowing of leaves and stunted plants. Inside, vascular [...] cut. When the bacteria transfers to young plants through infected tubers, the wilting and collapse of plants happens rapidly. Leaves remain green after [...] -infected plants. In tomato, the youngest leaves are affected first. They show signs of wilting during the day which may disappear in the early stages of infection

• Fusarium wilt

  vessel system of the host plant and spreads upwards inside the plants. The other species are dispersed upwards on the outside of the plant. Most Fusarium [...] yellow and wilt, mostly on one side of the plant. Finally, the whole plant wilts. Other symptoms are brown discolouration of the xylem vessels which can be [...] is similar to that of most Fusarium species. Fusarium overwinters for many years in the soil and on crop residues of infected plants as chlamydospores (thick

• Angular leaf spot

  form a secondary source of infection. They are dispersed by rain, irrigation water or handling of the plants. Infection of the plants happens both passively [...] 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 [...] cycle and appearance of Angular leaf spot Xanthomonas fragariae overwinters in plants and dead leaves, that become the primary source of infection in the spring

• Diglyphus isaea

  ). Release parasitic wasps between the leaves of the crop in the morning or in the evening The dosage of the parasitic wasp Diglyphus isaea depends on [...] a result of which the leaf miner larva dies. A few days after being parasitized, the leaf miner larva turns flaccid and brown. Older larvae of D. isaea [...] integrated pest management programs. Diglyphus isaea is used for the control of the following pests: Leaf miners The parasitic wasp Diglyphus isaea is available

• Bacterial soft rot, bacterial stem rot

  first noticed when plants wilt at the time of first harvest or after that. The pith disintegrates and the stem becomes hollow. Because of the bacterial growth [...] equipment Promote rapid closing of wounds Disinfest recirculating irrigation water Prevent plant diseases by optimizing plant potential and crop resilience [...] survive as epiphytic bacteria on various plants or in the soil in low densities. It has also been found in the gut of insects, possibly spreading from decaying

• Spider mites and other mites

  about What are mites? Plant mites are a diverse group of small arthropods that feed on plant sap. They are found in a wide variety of habitats, from forests [...] drop or death of the plant. Damage symptoms are important for early detection of plant-feeding mites and effective management, as their small size and tendency [...] necrosis. Life cycle of mites The life cycle of mites typically consists of four stages: egg, larva, nymph, and adult. The duration of their life cycle can

• Phytophthora blight

  blight and late / early blight of potato. Damage symptoms Phytophthora causes root rot, seedling damping off and rot of stems, bulbs, tubers, leaves and [...] a period of mass starvation caused by this disease which ravaged potato crops throughout Europe during the 1840s. Life cycle and appearance of Phytophthora [...] pathogen grows into the stem and on the plant surface and new sporangiophores (structures containing sporangia, a type of spores) with sporangia are formed that

• Pea blight, leaf and pod spot

  a minimum crop rotation of four years with non-host crops Bury or remove crop debris Prevent plant diseases by optimizing plant potential and crop resilience [...] General Ascochyta pisi is a fungal plant pathogen that causes A scochyta blight on pea (leaf blight or pea blight) and lesions of stems, leaves, and pods (pea [...] stem base but is not part of the foot rot syndrome in peas. Infected seeds may have brown areas. Life cycle and appearance of Pea blight, leaf and pod spot

• 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 [...] can be transmitted. The consumption of plant sap and secreting of honeydew by whiteflies reduce the aesthetic value of crops. This is particularly important

• Early blight

  leathery lesions occur at the side of the stem. Life cycle and appearance of Early blight From the primary infection of leaves, Alternaria solani can spread [...] infection of the leaves. Survival can be several years, up to eight years for several Alternaria spp. Typically, Alternaria causes early blight of potato [...] humidity (RH) of over 90% or when the leaves are wet. Small differences in optimum temperature occur between species, but in general the risk of Alternaria