Grey mould

plants or plant parts in a closed plastic bag In tomato: prune with a knife and not by hand, to avoid rugged, irregular wound surfaces In cucumber: remove dead [...] 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 the fungus [...] Botryotinia fuckeliana / Botrytis cinerea ) is a commonly found fungus in many environments. It survives in plant parts like bulbs and crop residues or as

Cabbage moth

are light brown with a rather inconspicuous spot in the middle. Head and thorax are grey-brown with white spots, and the abdomen is a pale, greyish brown [...] until they are a brown-black or sometimes even a purple colour. They are ridged and have a light network of markings. First instar larvae of the cabbage moth [...] youngest a transparent yellow to grey-green with a characteristic brown-black head capsule. After the third moult, the caterpillar is green with a dark back

Yellow rose aphid

appearance of Yellow rose aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. In greenhouses [...] probably of North American origin but is now widely distributed in Europe, North Africa, parts of Asia and South America. It attacks plants of the family [...] also holocyclic in parts of Europe, whereas throughout most of the world it is anholocyclic (i.e. only multiplying parthenogenetically with viviparous females

Aphidend

oviposition. Apply Aphidend in an environment with a high relative humidity (> 70%) to get the best results. Combined use High densities of generalist predatory [...] Pests All species/stages of aphids . Mode of action Adult gall midges emerge from the pupae and deposit their eggs in the aphid colonies. After emerging [...] weekly intervals until control is achieved. Consult a Koppert advisor or a recognized distributor of Koppert products for advice on the best strategy for

Goat moth

sides and a dark red back with a black head. The pupa is 5-6 cm long, dark brown, with spines on the abdominal segment. The moths fly at night in June or July [...] cossus ), is a pest of broad-leafed trees. It is most often found in birch, ash, willow and elm but can also attack fruit trees. It is widespread in Europe. [...] burrow in all directions in both sap and hart wood. Attacks are usually confined to the trunk of mature tress. Sap frequently exudes from the bark of attacked

Bacterial spot

occur on the abaxial (underside of) leaf surfaces and may enlarge into dark brown lesions with a light brown centre. As with powdery mildew infection, pepper [...] These spots may be surrounded by a halo. In pepper, the spots on the leaves are also round and small to start with and slightly raised from the leaf surface [...] volunteer plants and crop debris Avoid waste piles in the vicinity of the greenhouse or field Resistant cultivars of pepper are available and should be used Prevent

Verticillium wilt

vessels of the plant and produces spores that are transported upwards with the transpiration stream. As a defence mechanism, the plant produces gum in the [...] prevent Verticillium wilt Start with clean soil or substrate by heating it at a temperature if at least 65 o C for a minimum of 30 minutes Use clean seed, tubers [...] pale-green, then 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

Silver-Y moth

underside of the leaves of their host plant, usually separately but sometimes in small groups. These eggs are a greyish white, suffused with a blue-grey [...] will form a greenish to black pupa, either in leaves which are woven together with silk threads, or in a suitable hiding place spun somewhere in greenhouse [...] d leaves, accumulation of frass and destruction of growing points. Life cycle and appearance of Silver-Y moth The forewings of the silver-Y moth ( Autographa

Phytophthora blight

causes water-soaked lesions with vague borders and white fluffy fungal growth on the leaves. The centre is grey-brown with a light-green edge. On the stem [...] was a period of mass starvation caused by this disease which ravaged potato crops throughout Europe during the 1840s. Life cycle and appearance of Phytophthora [...] optimal for crop growth. Phytophthora overwinters in roots, infected tubers and bulbs or in the soil in different stages: as oospores (sexual overwintering

Black bean aphid

is widespread in temperate regions, where it is a serious economic pest of beans. It is highly polyphagous, and attacks a wide range of other crops. Damage [...] winged and wingless forms of adults and a great variety in colour. In greenhouses, reproduction takes place by parthenogenesis, with unfertilized viviparous [...] photosynthesis in the leaves is reduced, affecting production. Life cycle and appearance of Black bean aphid Aphids have a complex life cycle, with both winged