Beet armyworm

the damage can spread to the stems, and in the worst cases to the fruit. This often leads to the entire contents being consumed. In ornamental crops the [...] a regular problem for horticulturalists due to its resistance to nearly all insecticides, and its ability to develop on wild vegetation during the summer [...] migrate to the top of the plant where they feed mainly on the growing tips. They produce large holes in the leaf, sometimes stripping the leaf down to the

Caterpillar control with nematodes

be used in conventional, organic or zero residue growing methods in a wide range of crops; fruits, vegetables and ornamental crops. 5 reasons to use nematodes [...] resulting in a healthier crop and higher yields. Which nematodes control caterpillars? The beneficial nematodes produced by Koppert have been selected to target [...] Unlike chemical pesticides, which trigger an immune response in pests enabling them to adapt, nematodes remain highly effective over time. Free of concerns

Chafers

reddish-brown in colour. The adult beetles fly in the evening, generally in June and July and land on trees to mate. During the night the females move to the ground [...] feeding on the roots can lead to yellowing and wilting of plants. Damage can be severe on young plants and especially in grassland and turf. There, secondary [...] ground to lay their eggs. Eggs are shiny and white. The eggs hatch after about four weeks and the larvae start to feed on roots. The larvae are white-coloured

Fall Armyworm

disperse in a radius of about 500 km (300 miles) before oviposition, which is sufficient for them to move from seasonally dry habitats to wet habitats in Central [...] appear ragged or torn (similar to hailstorm damage in appearance). Life cycle of the Fall Armyworm Adult moths are 20 to 25 mm long and have a wingspan [...] the warm, humid evenings. Females lay their eggs in clusters of 150-200 and can lay up to 2000 eggs in a lifetime. Eggs are white, pinkish or light green

Cabbage leafroller

y gerbera. In chrysanthemum too, this species is an increasing problem, and it has caused problems in sweet pepper since the mid 1980’s. In protected soft [...] opening bud to the growing tip, while older caterpillars eat a hole in the shoot and hollow it out, causing the shoot or growing point to wilt and die [...] are laid in batches of 10 to 90 pieces and covered with a gelatinous layer on the upper side of leaves, preferably on major veins or depressions in the epidermis

Impatiens thrips

increasing problem in greenhouse cultivation, having spread to many countries within the last 30 years. The thrips have mostly been able to spread as a consequence [...] consequence of the trade in foliage plants. Impatiens thrips (Echinothrips americanus) has a wide range of hosts. In addition to many ornamental plants it [...] present on weeds in greenhouses. Life cycle and appearance of Impatiens thrips Impatiens thrips (Echinothrips americanus) develops in six stages: egg,

Lesser Mealworm

Larvae hatch four to seven days after the eggs are laid and complete their development over six to eleven larval instars in 40 to 100 days, depending [...] disperse to pupate in secure, isolated locations. The pupae superficially resemble shorter, stubbier larvae and change colour from creamy white to tan-­brown [...] the chickens in turn, posing a risk for disease transmission, especially Salmonella . These insects reproduce quickly and are difficult to control. They

Encarsia formosa

belonging to the family Aphelinidae , widely recognized for its role in biological control, particularly in the management of whitefly populations in various [...] 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 [...] and tear off the strips opposite to the mounting hole Make sure not to touch the pupae during handling Suspend the cards in the crop, if possible approximately

Tobacco aphid

yield. Plant sap is rich in sugars, but has a low protein content. Aphids therefore need to extract large quantities of sap to get sufficient protein. The [...] The tobacco aphid tends to form denser colonies, closer to the top of the plant, than the peach potato aphid . It is not known to what extent tobacco aphids [...] ) 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

Click beetles

yellowish brown to black. The eggs are laid in May or June in groups in the soil. They hatch about one month later and the larvae start to feed on roots [...] fully grown the larvae pupate in the soil in summer. The adults appear about 4 weeks after pupation, but usually remain in the soil until the following spring [...] bore into the base of plants. This can cause the plants to wilt and die. Damage is more severe in young plants. Life cycle and appearance of Click beetles