Important Insect Pests in Madicago sativa L. in Bulgaria

Abstract This paper describes common insect pesterers in forage alfalfa in Bulgaria and their seasonal dynamics. the strategy of sweeping with the entomologic web was used. The degree of infestation (attack) of Otiorrhynchus ligustici was established by taking soil monoliths. the foremost common insect pests of alfalfa from animal order are Hypera postica, Sitona spp., Apion seniculus, and Otiorrhynchus ligustici. the following species belongs to orders animal order and animal order. Therioaphis maculata was the most harmful mintage, followed by Acyrthosiphon genus Pisum from Aphidodea, likewise Adelphocoris lineolatus and Lygus rugulipennis (Hemiptera – Heteroptera). Economic importance species from Hemiptera: Fulgorormorpha and Cicadomorpha were Empoasca pteridis and Agallia ribauti, likewise Thrips tabaci and T. atratus (order Thysanoptera). Apion seniculus is rumored for the primary time in our country as harmful species in alfalfa. the most insect pests, counting on the order to that they belong, were found in high numbers through the various regrowth of alfalfa vegetation amount. The determination of the population dynamics of economically vital pesterer species within the alfalfa fully grown for forage, helps verify the foremost acceptable time for management and management.

Keywords: Alfalfa, insect pest, seasonal dynamic, Bulgaria

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