The study was carried out in multifoliolate alfalfa agrocenosis in the period of 2005 - 2006 at the Experimental Field of the Agricultural University, Plovdiv to determine the species and the population dynamics of the most important pests on multifoliolate alfalfa. Twenty-seven species were found. The main pests were Phytononus variabilis Hrbst., Phytodecta fornicata Brugg. and Sitona spp.
Species complex and population dynamics of the important pests on the multifoliolate alfalfa growing for hay in the region of Plovdiv