Ervibank
parasitise the wheat aphids ( Sitobion avenae ) present on the cereal planyd and form a large population of parasitic wasps on the cereal plants. The aphid [...] cereal plants from the box and place it on the rock wool in the basket Place the basket in direct light, preferably in a spot where it can remain for 10-12 weeks [...] results are obtained when the banker plants hang above the crop To prevent the crop from honeydew contamination, secreted by the aphids , a large plastic