removal extirpation recommended

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Acknowledgments and Bibliography for Roosevelt Flora
... intolerant of shade. * i Digitaria sanguinalis (L.) Scop. [Crabgrass/Common C.] Removal/extirpation recommended, but probably impossible. * Echinochloa crus-galli (L.) Beauv. [Barnyard Grass] * Eleusine indica ... .G./Japanese S.G.] Very destructive. Removal/extirpation recommended, although it may be impossible or take years of repeated removal (seeds are very longlived). Muhlenbergia schreberi Gmel ...
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