Efectos alelopáticos de plantas de Cynodon dactylon L. en praderas naturales invadidas

We evaluated the allelopathic effect of invasive species Cynodon dactylon from a natural grassland and overseeding intersowing with legumes fertilization phosphorus, on two native grasses, Paspalum notatum dilatatum. Due to what was observed in fertilized grasslands, where cover C. increases, P. decreases dilatatum is not affected, it expected that allelochemicals grasslands would have negative notatum. The aqueous extracts germination, growth development grasses studied. Contrary our expectations, we could detect inhibitory effects treatments germination adult plants autumn, but an increment both irrigated grasslands. In contrast, spring, responses were neutral. results obtained do indicate fresh leaves explains success decrease although other approaches should be considered for its study.