Green peach aphid

families. Damage symptoms Of all the aphids , the peach potato aphid ( Myzus persicae subsp. persicae ) is the most important vector of viral diseases. It can [...] 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 [...] to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky

Tomato looper

three pairs of prolegs, instead of the normal five and therefore the caterpillar moves with the same looping motion as an inchworm (geometrid). The cocoon is [...] Older instars eat through the leaves, which make them appear skeletonized. The last two instars may eat the entire leaf except for the midrib or other large [...] white marks on the forewing that sometimes overlap each other. The hindwings are brown. The body is brown and hairy and, when at rest, the hairy dorsal plume

Potato aphid

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 [...] to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky [...] characteristic of the potato aphid and is particularly visible in the nymphs. Immatures have a light dusting of whitish-grey wax. The aphids instantly

False spider mites

found on the underside of leaves where they cause a brown, scabby discolouration spreading from both sides of the main vein into the leaf blade. The damage [...] and adult. They move slowly and are mostly found along the veins on the underside of leaves. The mites are flattened and egg-shaped when seen from above [...] pattern. The eggs are a clear red colour and elliptical in shape. They are laid in a fold in the leaf or along the mid-vein, often in dense clusters of several

Cotton aphid

including the cucumber mosaic virus. Nymphs and adults extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s [...] to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky [...] retarded giving rise to deformed leaves or, if the infestation occurs early enough in the season, the death of young plants. Retarded growth and defoliation

Trianum-P improves open field pepper production in Portugal

out with the company Sociedade Agrícola Militão, in the town of Ribatejo, in a pepper crop for the processing industry. Pedro Militão is one of the two owners [...] product present the physical and organoleptic characteristics of the variety, free of pests and diseases and free of pesticides, guaranteeing the final consumer [...] owners of the company Sociedade Agrícola Militão which cultivates about 40 hectares of peppers in the Marinhais area. The entire crop is harvested mechanically

Apple rosy aphid

and on the base of buds of apple trees. The eggs hatch in spring and at first the aphids attack buds, spur leaves and rosette leaves. Later the infestation [...] presence in the crop. Adult viviparous (wingless) females of the rosy apple aphid are 2.1-2.6 mm long and pink to dark bluish grey, with a powdering of white [...] produce new generations of females. By late May or June (in the northern hemisphere) multiple large colonies may be present on the trees. Winged aphids are

Cabbage leafroller

lighter than the general body colour. In general, the caterpillar has a rather dull appearance. In the fruit of sweet pepper, however, the caterpillars [...] each wing, the more proximal pair almost forming a “V” when at rest. At rest, the wings are held folded almost horizontally over the body. The antennae are [...] are thin and of medium length. The moths fly when it is dark. The yellow eggs are laid in batches of 10 to 90 pieces and covered with a gelatinous layer

Municipality Enschede: Entonem nematodes against oak processionary caterpillar

The Municipality of Enschede started using nematodes for the first time in the spring of 2021 to try to halt the spread of the oak processionary caterpillar [...] caterpillar . The municipality’s built-up area has a total of 22,000 oak trees. In the past, the municipality only extracted the nests. But as Petra Klein Breukink [...] explains, it was not enough. She is the project manager of the oak processionary caterpillar for the Municipality of Enschede. ‘We use Koppert’s nematode

Blueberry aphid

females of the blueberry aphid are pale yellow-green. The siphunculi are long and straight. Blueberry aphids overwinter as eggs on blueberry bushes. The fundatrices [...] vector of blueberry scorch virus. Life cycle and appearance of Blueberry aphid Aphids have a complex life cycle, with both winged and wingless forms of adults [...] scammelli Blueberry aphid General The blueberry aphid, Ericaphis fimbriata or Ericaphis scammelli , is most likely of North American origin and was probably