Whitefly

greenhouse and field crops, feeding on plant sap and transmitting harmful viruses. Their feeding weakens plants, causes leaf yellowing and leads to honeydew [...] consequences: 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 [...] need a lot of nutrients for growth, and thus consume a large quantity of plant sap. This contains a high proportion of sugar, and the excess is excreted

Western flower thrips

necrotic spot virus (INSV). Both viruses affect a wide range of plants, and often a single host plant may be infected by both viruses. [...] flower thrips (Frankliniella occidentalis) can be found on a wide variety of plants, including many vegetable and ornamental crops in greenhouses, and on various [...] flower petals and in the soft parts of stalks. They are inserted into the plant tissue with a saw-like ovipositor. Larvae are nearly transparent white or

Aphids

and plant residues that can harbor aphids. Regularly remove and dispose of any infested plant material. Monitor your crops regularly Inspect plants for [...] and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded, giving rise to deformed [...] early enough in the season, the death of young plants. Retarded growth and defoliation reduce yield. Plant sap has a low protein content but is rich in sugars

Cyclamen mite

species that feed on fungi, algae, plants, as well as insect and mite predators and parasites. Those living on plants can cause considerable damage to their [...] symptoms The cyclamen mite ( Phytonemus pallidus ) feeds on plant sap by penetrating the plant tissue with its piercing-sucking mouth parts. The mites are [...] because the mite spreads very slowly. Symptoms vary depending on the host plant and can resemble the damage caused by viruses. Infested leaves are twisted

Potato

‘potato’ ( S olanum tuberosum ) is used to refer to the plant itself or its edible tuber. The plant is an herbaceous perennial and came to Europe from Latin [...] rice. Potato plants grow up to some 60 cm tall. Its leaves die after flowering, fruiting and the development of the potatoes. The plant’s flowers vary [...] blue, to purple and have yellow stamens. After the flowering phase, the plants grow small, green fruits which look like cherry tomatoes and contain about

Leek

‘trenching’). The plant is usually sold as a small seedling and planted in a greenhouse. Later on, as weather permits, the leek is planted outside in the [...] are all classified as cultivars of Allium ampeloprasum . The part of the plant that can be eaten is at times erroneously called a stem or stalk. This part [...] the soil. Once outside, the plant is rather hardy and many varieties can be left in the soil during winter and harvested when there is a need for them.

Cucumber

cultivated plant that belongs to the gourd family of Cucurbitaceae . The cucumber originates from South Asia, more particularly in India. The plant’s cultivation [...] on most continents. The cucumber plant is a creeping vine that grows up trellises or other supporting frames. The plant supports itself with thin, spiraling [...] spiraling tendrils. The cucumber plant has large leaves and it produces an elongated, cylindrical fruit that may become as long as 60 cm or 24 inches long

Herbs

leafy green or flowering parts of a plant, which can be used fresh or dried. Spices derive from other parts of herbal plants and are often dried seeds, berries [...] About Herbs are actually all plants which are used as food ingredient, natural medicine or fragrances. They often have savory or aromatic characteristics [...] and fruits. Botanically speaking, ‘herb’ is synonymously to ‘herbaceous plant.’

Wheat

east of the Mediterranean. The wheat plant is an annual plant which is sown either in spring or autumn. The plant flowers from about the end of May to [...] (usually lasting longer than a week), because not all flowers of one single plant open at the same time.

Citrus mealybug

are capable of moving a reasonable distance over the plant. The male nymph attaches itself to the plant, whereas the females remain mobile throughout their [...] Planococcus citri ) has a world-wide distribution and many and diverse host plants. In temperate regions of the world this mealybug poses a problem in greenhouse [...] damage especially in fruit trees and ornamental crops, particularly in pot plants such as ficus, palms, schefflera, croton and kalanchoë, but also in roses