Harmfulness of most important agrophages of crops in Poland in 2008.

摘要

This paper presents the harmfulness estimation of the most important diseases and pests occurring in main agricultural and horticultural crops in Poland, in 2008. The presented data were based on the results of field observations. In 2008, the increase of agrophage occurrence was recorded in cases of Sitobion avenae on wheat, Oscinella pusilla on maize, Pegomyia hyoscyami [Pegomya betae] and Aphis fabae on sugarbeet, Leptosphaeria spp., Ceutorhynchus assimilis and Dasyneura brassicae on rape, Phytophthora infestans on vegetable crops, Venturia inaequalis, Hoplocampa testudinea, Hoplocampa spp., Cydia funebrana and Rhagoletis cerasi in orchards compared to 2007.