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24th September 2013

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Misgivings About How a Weed Killer Affects the Soil (NY Times)
“Because glyphosate moves into the soil from the plant, it seems to affect the rhizosphere, the ecology around the root zone, which in turn can affect plant health,” said Robert Kremer, a scientist at the United States Agriculture Department, who has studied the impact of glyphosate on soybeans for more than a decade and has warned of the herbicide’s impact on soil health.
In some studies, scientists have found that a big selling point for the pesticide — that it binds tightly to minerals in the soil, like calcium, boron and manganese, thus preventing runoff — also means it competes with plants for those nutrients. Other research indicates that glyphosate can alter the mix of bacteria and fungi that interact with plant root systems, making them more susceptible to parasites and pathogens.
The roots appear healthier on the conventionally raised plant, right. David Eggen for The New York Times

Misgivings About How a Weed Killer Affects the Soil (NY Times)


“Because glyphosate moves into the soil from the plant, it seems to affect the rhizosphere, the ecology around the root zone, which in turn can affect plant health,” said Robert Kremer, a scientist at the United States Agriculture Department, who has studied the impact of glyphosate on soybeans for more than a decade and has warned of the herbicide’s impact on soil health.

In some studies, scientists have found that a big selling point for the pesticide — that it binds tightly to minerals in the soil, like calcium, boron and manganese, thus preventing runoff — also means it competes with plants for those nutrients. Other research indicates that glyphosate can alter the mix of bacteria and fungi that interact with plant root systems, making them more susceptible to parasites and pathogens.

The roots appear healthier on the conventionally raised plant, right.
David Eggen for The New York Times

Tagged: Weed killerGMOGlyphosateSoilRootsMicrobiomePlantsCropsBiologyScience

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