General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection of the leaves. Survival can be
General Clavibacter is a quarantine organism in Europe, which means that strong efforts are used to prevent the bacterium from entering. When the occasional infection is found, strict measures are tak
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 leaf spot and pea pod spot). Damage sympt
or a recognized distributor of Koppert products for advice on the best strategy for your situation. Best conditions for Diglyphus isaea Diglyphus isaea
About Coffee beans are the source of one of the most popular beverages in the world. They are in fact, not actual beans, but the seeds of Coffea , a genus of flowering plants whose seeds are known wor
General The woolly aphid, Eriosoma lanigerum , is a serious worldwide apple pest. It is probably of North American origin and has been distributed to other parts of the world mainly via infested apple
General The larvae of crane flies , called leatherjackets, live in the soil and feed on roots and shoots (which they pull into the ground of mainly grasses and cereal crops. The adults do not cause an
General The tobacco whitefly ( Bemisia tabaci ) belongs to the family Aleyrodidae , and the sub-family Aleyrodinae . This insect was first identified on tobacco in Greece in 1889, hence the name tabac
About Originally from Mexico, Central and South America, this common tropical fruit is cultivated in many tropical and subtropical regions. A vivid yellow or green on the outside, Psidium guaiava, is
