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PHYSorg
Apr 24, 2014, 8:00 am69 ptsTrending(Phys.org) —When Antonio DiTommaso, a Cornell weed ecologist, first spotted pale swallow-wort in 2001, he was puzzled by it. Soon he noticed many Cornell old-field edges were overrun with the weedy vines. At Grenadier Island near Watertown, N.Y., pale swallow-wort had choked out desirable plants species on…
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