Variety Preferences of Oulema melanopa (L.) (Coleoptera: Chrysomelidae) of the Winter Wheat

Abstract

 The investigation was established in a experimental field and laboratory of the Institute of Agriculture, Karnobat in 2005 – 2007. Variety preferences of Oulema melanopa (L.) in 28 variety of wheat (Todora, Albena, Kristal, Preslav, Milena, Iantar, Priaspa, Svilena, Enola, Aglika, Pliska, Miriana, Sadovo 1, Zdravko, Diamant, Bononia, Momchil, Pobeda, Sadovo 772, Sadovo 552, Sadovska belia, Murgovets, Katia, Slaveia, Iveta, Demetra, Boriana, Dobrudjanka) have been studied. Established is the inverse correlation between the quantity of dry matter in leaves of wheat and the invasion of Oulema melanopa (L.). Oulema melanopa (L.) prefers varieties with lower content of dry substance in the leaves. From the survey, these are – Todora, Sadovo 772 and Albena. At least invasion varieties Preslav – 1.62%, Diamant – 1.7% and Iantar – 1.75%.