Vitality structure of the populations of some weed species in crop sowings

Abstract

Features of development of populations of weed species (Cirsium arvense (L.) Scop., Sonchus arvensis L., Melandium album (Mill.) Garke, Setaria glauca (L.) Beauv., Fallopia convolvulus (L.) А. Lоve) in most typical crops in the forest-steppe zone of the Sumy region. It was studied the crop sowings (winter wheat, rye, barley, buckwheat, pea) which was not subjected to the herbicide treatment.