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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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2 .Lawn enthusiasts love a lush, green carpet of grass.
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3 .Which is why they hate crabgrass.
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4 .And now, they may have one more reason to despise the weed.
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5 .Because crabgrass isn't just faster-growing than the rest of the lawn.
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6 .It may actually be poisoning the lawn, by pumping herbicide into the soil.
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7 .That's according to a study in the Journal of Agricultural and Food Chemistry.
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8 .Researchers crabgrass hydroponically, so they could easily capture any chemicals released by the plant's roots.
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9 .Then they dripped that hydroponic solution into pots of wheat, corn and soybean seedlings.
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10 .Two weeks later, they dried and weighed the seedlings.
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11 .And sure enough, the crabgrass solution had significantly stunted the seedlings' growth, compared to control plants.
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12 .And since corn is in the same family as lawn grasses, the crabgrass toxic effect may also spell bad news for your beautiful Kentucky bluegrass.
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13 .The researchers still aren't exactly sure how crabgrass' chemical weapons work.
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14 .But the weed can wipe out beneficial bacteria and fungi in the soil, too.
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15 .So it's possible that crabgrass poisons its neighbors directly, by releasing toxins, and indirectly, by creating inhospitable soil.
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16 .Either way, it's bound to make lawn owners crabby.
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17 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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