Abstract
AbstractAqueous extract effects of 64 weed species on growth and development of Alternaria solani Sorauer. Helminthosporium satirum King & Bakke and Rhizodonia solani Kuhn. plant pathogenic fungi were studied in vitro. Extracts varied in the strength and persistence of their antifungal effects against the three fungi species. Some stimulated, others inhibited or had no effect. Among all species tested, extracts of Chenopodium murale, Falearia vulgaris. Ranunculus asiaticus and Sisymbrium irio were the most toxic to A. solani. Anagallis arlensis. Atriptex leucoclada, Crepis aspera. Notobasis syriaca. R. asiatieus, Rumex crispu. S. irio. Sonehu.s oleraceous and Vieia narhonensis to H. satirum and R. asiatieus. S. oleraceous and Mercurialis annua to R. solani. However. R. asiatieus extract was the most effective and completely inhibited growth and sporulation of the three fungi species at all incubation periods.
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