LAUSR

P�������� J., M������ T. (2004): Effects of different field managements on the abundance of cereal aphids (Sternorrhyncha: Aphidoidea). Plant Protect. Sci., 40: 82–86. The abundance of cereal aphids on winter wheat tillers and ears was determined in two field managements (integrated and ecological) at Dolná Malanta, Slovakia, over the years 1999–2001. The overall average number of aphids detected per tiller in the integrated field management was 22.73, while in the ecological management that number was 15.67; there were thus 31.06% more aphids in the integrated field management. The average number of aphids detected per ear in the integrated field management was 3.64, and in the ecological field management the number was 2.51; again, there were 31.04% more aphids in the integrated field management.