Aphids

Biological control of aphids Aphids are among the most harmful pests in greenhouse and field crops, causing plant stress, virus transmission and yield loss. Effective aphid control is essential for ma

Boisduval scale

General These three species of Diaspi s are very similar in their appearance and damage symptoms. Here, the Boisduval scale is described in more detail, as it is the most important one. The Boisduval

Leek moth

General The leek moth is present throughout Europe. It is also found in some Asian countries and has been introduced to parts of Canada. The larvae of Acrolepiopsis assectella feed on cultivated Alliu

Large blackberry aphid

General The large blackberry aphid, Amphorophora rubi , is very similar to the large raspberry aphid Amphorophora idaei . As both aphid species are host specific the host plant is the simplest method

Shallot aphid

General The shallot aphid, Myzus ascalonicus , is extremely polyphagous. It feeds on crops such as onions, shallots, strawberries, lettuce, brassicas and potatoes and many ornamentals . The shallot ap

Leafhoppers

Biological control of leafhoppers Caterpillars are highly destructive pests that feed on leaves, stems and fruits, causing serious damage to greenhouse and field crops. Their feeding reduces photosynt

Black bean aphid

General The black bean aphid, Aphis fabae , is widespread in temperate regions, where it is a serious economic pest of beans. It is highly polyphagous, and attacks a wide range of other crops. Damage

Crane flies

General The larvae of crane flies , called leatherjackets, live in the soil and feed on roots and shoots (which they pull into the ground of mainly grasses and cereal crops. The adults do not cause an

Thrips

Thysanoptera Thrips What are thrips? Several species of thrips are a major problem in greenhouse horticulture. The Western flower thrips ( Frankliniella occidentalis ) is the most damaging species. Th

Tobacco whitefly

Bemisia tabaci Tobacco whitefly General The tobacco whitefly ( Bemisia tabaci ) belongs to the family Aleyrodidae , and the sub-family Aleyrodinae . This insect was first identified on tobacco in Gree