Die Eiablage der Brachfliege (Phorbia coarctata Fall.) unter Berücksichtigung der Fruchtfolge1

Summary The numbers of eggs of Wheat Bulb Fly (Phorbia coarctata Fall.), present in fields of swedes, oats, and potatoes were determined. The highest numbers were found under swedes, the lowest under potatoes; oats held an intermediate position. The first eggs were present at the beginning of July under all crop plants examined. It is assumed, that the oviposition of Wheat Bulb Fly is influenced by plant cover of the soil.