• Shore fly

  January 1, 1970

  transmit plant diseases and can be a nuisance to greenhouse works by their sheer numbers. Frass deposited on leaves or flowers in ornamental crops, lettuce and [...] following stages: egg, three larval instars, a pupa and the adult fly. The eggs are laid singly and are bean-shaped. A first instar larva is translucent white [...] General Shore flies ( Scatella tenuicosta ) occur very commonly, often in the vicinity of water. They feed on algae. Other shore fly species have diverse

• Brown soft scale

  January 1, 1970

  soft scale Coccus hesperidum is very common in tropical and sub-tropical regions and is also a common pest in greenhouses throughout the world. C. hesperidum [...] coccids and in turn benefit from a rich food source. The honeydew also quickly becomes infected by sooty moulds which can cover the leaves, flowers and fruit [...] three days and disperse locally before settling. Once fixed in position, their colour changes to a transparent, light brown and they begin to feed.

• Cactus mealybug

  January 1, 1970

  onwards are covered with a white waxy material in the form of powder, threads, spiky projections or platelets. Eggs are laid in a sticky, foamy mass of wax [...] occasionally. After the second instar, the males form a pupa. After a complete metamorphosis, a winged male emerges from this pupa. The males lack mouth [...] (formerly known as Spilococcus cactearum ) is a pest of cacti and other succulents. It was first described in England but its origin is not clear. It is now

• Broad mite

  January 1, 1970

  rsonemus latus) occurs in the tropics and in greenhouses in temperate regions. The broad mite (Polyphagotarsonemus latus) has a wide range of host plants [...] leaves. In case of a mild infestation, one can often see brown, frequently collapsed spots, or brown stripes forming a fine network on the leaves. In case [...] and cyclamen are also affected. Outside in temperate climates, broad mites (Polyphagotarsonemus latus) are not a serious problem, as they are unable to

• Lyprauta

  January 1, 1970

  large numbers of new branches. This ultimately results in a reduced number of flower stems and a longer vegetative stage. The root damage can also form [...] sp. are a transparent greyish white and have a long slender body. The head is brown or reddish. The pupae are white to yellow and embedded in a dense web [...] Keroplatidae) have been associated with root damage in potted orchids, especially in greenhouses in the Netherlands. Dutch farmers call these larvae potworms

• Beetles

  January 1, 1970

  displays an enormous variety of form, size and habit. A number of species are a serious pest in crops or stored products. There are many useful beetles [...] aphids . Beetles undergo a complete metamorphosis, that is, the larvae do not resemble the adult at all, and must pass through a pupal instar before reaching [...] The pupae do not make a cocoon and will already display many similarities with the adults. The adult beetles usually possess a pair of membranous wings

• Tobacco aphid

  January 1, 1970

  also encountered in a range of crops in greenhouses, such as sweet pepper, aubergine, chrysanthemum, and various pot plants and cut flower crops. Damage symptoms [...] ) probably evolved from the peach potato aphid in the Far East and is a key pest of tobacco crops in both the United States and South America. The tobacco [...] of Tobacco aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in colour. When reproduction is asexual

• Macrocheles robustulus

  January 1, 1970

  found in high numbers in greenhouses in soil which has been enriched with compost. As natural enemies of various pests, Macrocheles robustulus plays a vital [...] Macrocheles robustulus is a species of predatory mite known for its role in biological pest control , particularly in agricultural and horticultural settings [...] first pests are detected in the crop. Introduction rates typically range from 100-500 per m2/release. Consult a Koppert advisor or a recognized distributor

• Sportnem-H

  January 1, 1970

  Nematodes can be applied using a watering can, an airblast sprayer, through a sprinkler system, with a backpack sprayer, or a vehicle-mounted spray unit To [...] spray tank (except when tank mixing with a compatible product) Maintain agitation of mixture in the tank (e.g. with a recirculation pump) Fill the spray tank [...] within a short timeframe. Do not store mixed suspensions Dosage Sportnem-H is typically applied at a rate of 2.5 billion nematodes per hectare. In general

• Flies

  January 1, 1970

  and shore flies are mainly a problem in greenhouses. Their larvae live in the ground and prefer moist substrates that is rich in organic matter. Although [...] are mostly found in the soil. The spotted wing drosophila , Drosophila suzukii , has recently developed into a major pest on soft fruits in Europe and North [...] deposited on leaves or flowers in ornamental crops, lettuce, and herbs also causes cosmetic damage, and sometimes this can occur on such a scale that growth