STUDIES ON THE BEHAVIOR OF WHEAT VARIETIES TO PESTS ATTACK OULEMA MELANOPA L PUBLISHEDLavinia Mădălina MICU, Doru PETANEC, Otilia COTUNA, Marius DICU, Pal FAZAKAS None
In Romania, a particularly important role in the new organization of agriculture is farmers'associations, which aim to ensure the concentration and specialization of production. After all the studies- Over the years, losses due to pests, diseases and weeds amount to several billion lei, which requiresaction at multiple levels. Insects show great plasticity in their adaptation to the conditions of existenceforming an inexhaustible number of morphological and biological types. From this large number ofinsects is part Oulema melanopa L. (oat/cereal leaf beetle), frequently reported in cereal crops in Banat.The purpose of this research was to identify, within three years, the most sensitive wheat varieties to theattack of Oulema melanopa L species. Studies were conducted in the experimental field of the disciplineNematology and Acarology, located on the left side of the national road Timisoara-Arad. Observationswere made on 16 wheat varieties, of which: 8 awned species and 8 varieties unawned (domestic andimported) from 2009 to 2011. Entomological material was collected with entomological net, by repeatedscything/mowing wheat crop. A sample was composed of 50 forages (25 on one side, 25 on the other side,alternating) from top to bottom, going zigzag, large diagonal of the plot. Oulema melanopa L. larvaewere collected manually.Varieties that are more resistant to the attack of Oulema melanopa L. wereCalango and Soisson, of the awned, and of the unawned varieties were noted Carolinum and Feny .Inrecent years, Oulema melanopa L. is attacking the leaves of maize (late hybrids ) where maize is locatednext to a plot of attacked wheat. As such, these parcels are a possibility of propagating the species andalso the land will be a reserve for next year, if cultivated with wheat (simple rotation maize - wheat).
wheat, Oulema melanopa L., frequency, intensity, degree of attack