Allelopathic effects of water extracts of Sorghum halepense (L.) Pers., Convolvulus arvensis L. and Cirsium arvense Scop. on early seedling growth of some leguminous crops

摘要: In order to study the allelopathic effect of aboveground dry biomass of Sorghum halepense, Convolvulus arvensis and Cirsium arvense on seed germination early seedling growth Pisum sativum (L.), varieties Mir (winter form) Kerpo (spring form); Vicia sativa variety Tempo, and Medicago Dara, a laboratory experiment was conducted at Institute Forage Crops - Pleven. Four concentrations: 1.25, 2.5, 5.0 10.0% were applied each weed biotype used allelopathic effects. The results showed that extracts significantly decreased percentage, shoot root length (cm), weight (g), seed vigor index (SVI1 SVI2) tested species. general, variable effects are related species extract concentrations.