Occurrence of major field crop pests in Vojvodina Province in 2006 and forecast for 2007

Abstract

The occurrence and forecasting of the major field crops pests in Vojvodina Province has been regularly reported since 1978. By inspection of soil samples from fields where cereals and sugar beet were grown in 2006, the following average number/m2 was recorded: 1.2 wireworms (Elateridae), 0.8 white grubs (Scarabaeidae), 0.9 caterpillars of Scotia spp., 0.0 adults of Zabrus tenebrioides, 0.16 adults of Bothynoderes punctiventris and 0.9 chrysalides of Mamestra spp. In late autumn, 9.4 adults/m2 of senn pest (Eurygaster and Aelia), was found on over wintering sites. The number of Cotton bollworm (Helicoverpa armigera) increased in 2006, but injuries were insignificant. The number and injuries of ECB (Ostrinia nubilalis) were slightly higher to previous year, while the population density of the WCR (Diabrotica virgifera virgifera) was similar. During 2006 one of the major problems in plant production were rodents, particularly Cricetus cricetus, while during summer on soybean it was Vanessa cardui. .

Tokom vegetacije 2006. godine, na području Vojvodine, konstatovana je slaba pojava i intenzitet napada štetočina biljaka (sem izuzetno jake pojave hrčka i stričkovog šarenjaka). Pregledom zemljišnih uzoraka, u jesenjem periodu, utvrđeno je odsustvo žitnog bauljara, niska brojnost repine pipe i grčica, pad brojnosti žitnih stenica i larvi skočibuba, a znatniji porast brojnosti podgrizajućih i lisnih sovica.