The paper present results from the studies carried out in the years 1999-2000 on the effectiveness of seed dressing of spring barley with the insecticide Gaucho 350 FS (a.i. irnidachloprid) to control frit flies, gout flies, aphids and thrips in piedmont conditions.

The paper presents results of studies on the occurrence and economic importance of maize pests: european com borer (Ostrinia nubilalis Hbn.) and frit fly (Oscinellafri1 L.) (conducted in 1977-2000) as well as aphids (Aphididae) and thrips iThysanopterai (in I 982-1983, I 985 and 1988-2000).