Northern Corn Rootworm

feed on the foliage, pollen, silks and developing kernels of corn, with the following consequences: When corn silks are cut all the way back to the ear and [...] diapause; the eggs of “semivoltine” Diabrotica barberi remain dormant in the soil for two winters. This allows the larvae to effectively skip the field’s [...] in the soil at the base of corn plants in late summer/early fall and each can lay up to 300 eggs. Northern corn rootworm eggs remain dormant in the soil

Trianum effectively controls Pythium in cucumber

of production at the end of cultivation. Whole mats and whole rows had to be rejected, and the fungus would spread through the gutters to adjacent mats. [...] fewer chemicals,’ he explained. The biggest threat to his crop is thrips , especially during the darkest period of the year. ‘Nature basically shuts down [...] sorts of conditions have a bigger impact on the beneficials than on the thrips, which means I need to be alert. The same goes for caterpillars , since there’s

Impatiens thrips

cause damage to plants by piercing the cells of the surface tissues and sucking out their contents, causing the surrounding tissue to die. The resulting [...] cultivation, having spread to many countries within the last 30 years. The thrips have mostly been able to spread as a consequence of the trade in foliage plants [...] brown to black in colour with orange pigmentation between the segments, and the dark wings are white at the base. This colouration distinguishes the species

House fly

Believed to have originated in central Asia, the insect expanded its range worldwide long ago as a commensal organism to human populations; the housefly [...] from yellow to red, to brown, to black as the pupa ages. New adult flies will emerge as early as two days after pupation (at temperatures above 30°C) or [...] House fly The adult house fly ( Musca domestica ) is 6–7 mm long, yellowish-grey to dark grey in colour, with four narrow black stripes on the thorax,

Dibox

available in sachets. How to use Dibox Application Fold out the Diboxes Pour the material into the Diboxes Hang the Diboxes close to or at a hotspot Best working [...] When to use Dibox Use a Dibox for the application of biological products when it is necessary to apply close to a hotspot. This mainly counts for parasitic [...] working conditions for Dibox Depending on humidity the Diboxes can be used for multiple introductions of the natural enemies.

Cutworms

into the growing stalk, disrupting the sap flow in the plant. Life cycle and appearance of Cutworms The adults of Agrotis spp. have pale grey to grey-brown [...] eggs. There are six to seven larval stages. Pupation takes place in the ground. Depending on the temperature, the development from egg to adult takes about [...] instance the black cutworm Agrotis ipsilon and the turnip moth Agrotis segetum . The larvae of these moths usually feed on roots and plant parts close to the

Tobacco aphid

of dispersing through the crop by walking. The tobacco aphid tends to form denser colonies, closer to the top of the plant, than the peach potato aphid [...] on the abdomen and several transverse black bands across the body. The antennae are 0.7-1.0 times the body length, reaching to the siphunculi. The body [...] from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation

Two-spotted spider mite

cause damage to the host plant by feeding on plant sap. They mainly occur on the underside of leaves where they pierce the cells and suck out the contents [...] contents. The empty dead cells become yellow, and in many plants the damage can also be seen on the upper surface of leaves as small yellow dots. The destruction [...] removed, the leaf, and eventually the whole plant, may die. In tomatoes and cucumbers, as little as 30% damage of the leaf surface can lead to loss of the

Nematodes significantly reduce Tuta larvae

than 80%. The large infestation which was present was reduced and under control, and the application greatly contributed to the condition of the plants,’ [...] them on the tomato canopy at a dosage of 3 billion per hectare. We prefer to apply them in the evening so that the leaves stay wet for longer and the nematodes [...] achieve the maximum effectiveness. The crops are now strong and healthy and the Tuta absoluta is not such a big problem anymore thanks to the comprehensive

Spotted Wing Drosophila

oviposition, the respiration tubes extend from the fruit but are difficult to see. Larval feeding in the fruit leads to fruit tissue collapse. Even if the fruits [...] collapsed, the occurrence of larvae within the fruit makes them unmarketable. The punctures made by the oviposition by D. suzukii exposes fruits to secondary [...] strong saw-like ovipositor that is used to penetrate the skin of the host fruit and for laying the egg into the fruit. Eggs are white, 0.6 long and 0.2