Powdery mildew

stomata on the underside of the leaf. On the upper side, yellow spots are noticeable. In case of a severe epidemic, the fluffy colonies also appear on the [...] fairly similar in all plant-pathogen combinations. The symptoms are white fluffy colonies, first and foremost on the upper side of the leaf. In severe epidemics [...] epidemics in cereals, the ears may also be infected. In pepper, the fluffy colonies occur mostly on the underside of the leaf, because the fungus infects

Oleander scale

reduction in fertility and high mortality in crawlers. Damage symptoms Scale infestation can be seen by the appearance of the scale armour on stems, leaves [...] fruit occurs in heavy infestations, where spotting and often deformity of fruits affects market value. In olives this is seen as green spots on purple fruits [...] Adult oleander scales are a greyish, dirty white or yellowy colour, round in shape, with a scale whose apex is off-centred. This scale resembles a miniature

Cottony soft rot

The plant above it wilts and rots. White, fluffy fungal mycelium grows on the lesions, giving this disease its name cottony soft rot. In the mycelium, big [...] sclerotiorum ) overwinters as sclerotia and mycelium in dead and living plant material in or on the ground. Sclerotia germinate at temperatures between [...] the naked eye and look like rat droppings. The symptoms may occur on stems but also on leaves, fruits and pods. Root infection often leads to premature

Encarsia formosa

Aphelinidae , widely recognized for its role in biological control, particularly in the management of whitefly populations in various agricultural and horticultural [...] highly adaptable and can adjust its parasitism based on the density of the whitefly population, making it a valuable tool in integrated pest management . [...] transparent to brown in colour. The pupa of E. formosa is unique among the species of Encarsia , in that it is formed immediately beneath and in contact with the

Pepper weevil

forms a cavity and covers it with its excrement, creating a type of cell, to be used later when it begins its metamorphosis. It develops a shiny white colour [...] inside the flower bud, they feed on immature pollen. In both cases, they begin to feed one to four hours after hatching. In total, the larva passes through [...] develop in flower buds and young fruit, causing the stalk and calyx to turn yellow before wilting and dropping off. When you see fruit on the ground, it is

Garden chafer

Scarabaeidae family. It does most of its damage in the larval stage when it feeds on roots of grasses and clover. The adults feed on the leaves of trees [...] most of its damage in the larval stage when it feeds on the roots. First instar larvae mainly feed on small humus particles, second instar larvae on fine [...] within stems of plants and on strawberry fruits lying on the ground. Both adult beetles and larvae are polyphagous and feed on a wide variety of plant species

Impatiens thrips

attacks sweet pepper, cucumber and eggplants. It lives exclusively on the leaves and is often present on weeds in greenhouses. About Impatiens thrips Life cycle [...] from egg to adult on the plant, specifically on the leaves. Eggs are deposited in the leaf tissue, while subsequent stages are found on the upper- and undersides [...] Pupation occurs on the leaf rather than on the ground. The prepupae and pupae remain immobile on the leaf tissue. Adults are found on both upper- and

Circular scale

northern countries of its range, it occurs in greenhouses. In addition to citrus, it occurs on many other plants. Life cycle and appearance of Circular scale [...] region but it has been dispersed widely in tropical and subtropical parts of the world, mostly in association with the citrus industry. In more northern [...] environments. In citrus, it tends to prefer the lower and central parts of mature trees. Circular scale prefers the leaves, but in high infestations it may spread

Leek

putting soil around it (so-called ‘trenching’). The plant is usually sold as a small seedling and planted in a greenhouse. Later on, as weather permits [...] permits, the leek is planted outside in the soil. Once outside, the plant is rather hardy and many varieties can be left in the soil during winter and harvested [...] vegetable leek is a cultivar of Allium ampeloprasum , the broadleaf wild leek. In the past, many different scientific names were used to identify various species

Aphidoletes aphidimyza

is available in bottle ( Aphidend ). Open the bottle in the greenhouse Place the bottle directly on the soil or rockwool slabs or hang it in-between the [...] midge known for its effectiveness in biological pest control , specifically targeting aphids . This beneficial insect is widely employed in integrated pest [...] night, it is crucial to keep the night temperature above 12°C/61°F, to ensure optimal conditions for oviposition. Apply Aphidoletes aphidimyza in an environment