Whitefly

comparable in outline. Whitefly can be found in many different environments, but they are particularly common in greenhouse settings and in agricultural [...] engaged for several hours in seeking a suitable place on the leaf where they can feed. Once they have found such a spot, they remain there throughout the period [...] the growth is obstructed by the stiff hairs. As soon as the red eyes of the adult whitefly are visible in the fourth larval instar, the stage is referred

Beetles

food as the adults. The pupae do not make a cocoon and will already display many similarities with the adults. The adult beetles usually possess a pair of [...] Coleoptera is the largest of all insect orders and displays an enormous variety of form, size and habit. A number of species are a serious pest in crops or [...] metamorphosis, that is, the larvae do not resemble the adult at all, and must pass through a pupal instar before reaching the adult stage. Larvae have biting

Glasshouse potato aphid

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, the young [...] pepper it secretes a toxic substance, which leads to deformations in the growing tip of the plant. Precisely where the plant is pierced is unimportant. The [...] presence in the crop. The wingless adult stage of the greenhouse potato aphid is rather squat, of medium size (1.8 - 3.0 mm long) and oval in shape. It

Asian citrus psyllid

citrus psyllid, ( Diaphorina citri ), is an important pest of citrus in several countries as it is a vector of a serious citrus disease called greening [...] It is widely distributed in southern Asia and the disease is responsible for the destruction of several citrus industries in Asia and Africa. In North [...] The disease can kill a citrus tree in as little as five years, and there is no known cure. Life cycle of Asian citrus psyllid Adult Asian citrus psyllids

Amazone Plants continues the path of organic cultivation

netting at a good rate over a longer period. This means that there is always a strong population in the greenhouse crop and control of the thrips is maintained [...] sprays a product of natural origin, such as Mycotal, twice a year, in the spring and in the autumn. Wim van der Meer explains, ‘Koppert is involved in a trial [...] store a proportion of the growing plants. In the end, everything more or less turned out fine – the plants in 12 cm pots were sold in 14 cm pots in the summer

Broad mite

brown stripes forming a fine network on the leaves. In case of a more serious infestation, this network becomes so dense that there is no more green tissue [...] rsonemus latus) occurs in the tropics and in greenhouses in temperate regions. The broad mite (Polyphagotarsonemus latus) has a wide range of host plants [...] egg, larva, and adult. The larvae have three pairs of legs, adults possess four pairs. The last pair of legs in both males and females is different to the

Operation Mealybug

Stand a Chance Powerful weapons are needed to deal with a mealybug infestation. Introducing the new heroes in the battle: the larvae and adults of the [...] and fruit are concerned, these often drop off; Plant sap is low in proteins and rich in sugars. In order to gain an adequate intake of protein, mealybugs [...] level of photosynthesis in the leaves also reduces flower and fruit production; In ornamental crops, the mere presence of mealybugs is sufficient to render

Thrips

dorsalis ): This is a polyphagous species and is a pest in berries and many other crops Citrus thrips ( Scirtothrips aurantii ): This species is a major pest [...] larval instars, a pre-pupa and a pupal instar, and finally the adult insect. The eggs are kidney-shaped and have a white or yellow shell. Before a female deposits [...] Thrips setosus ): This species is a major pest in ornamental crops How to prevent thrips Preventing a thrips infestation in your greenhouse crop involves

Tomato leaf miner

crop damage in many parts of the world, including North Africa, Europe and northern Asia. In warmer regions, the insect is found outdoors but in temperate [...] occurs in greenhouses. The tomato leaf miner has been found in greenhouses for decades, but has become a common pest since the 1960’s, particularly in sweet [...] miner The life cycle of a leaf miner has the following stages: egg, three larval instars, a pupal instar and the adult fly. Adult leaf miners are small yellow

American serpentine leaf miner

miner The life cycle of a leaf miner has the following stages: egg, three larval instars, a pupal instar and the adult fly. Adult leaf miners are small yellow [...] sweet pepper, pea, bean and potato. In greenhouses, it is mainly found on gerbera and chrysanthemum. Today the insect is widespread across the whole world [...] to burning in fruit such as tomato and melon. Loss of leaves also reduces yield. In full-grown plants of fruiting vegetable crops, however, a considerable