Abstract
The inhibitory effects of alfalfa (Medicago sativa L.) residues on seed germination, nutrient uptake and growth of broad beans (Vicia faba L.) grown in two soil types (clay and sandy soil) were investigated. An 8% aqueous extract of M. sativa strongly inhibited (41.2%) the seed germination index and the plumule and radicle lengths (by 8.6 and 4.1 cm, respectively) as compared with controls. The phytotoxicity of the aqueous extract increased from 9.9% to 59% when the concentration was increased from 1% to 8%.
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