Monarch butterfly

52 House Democrats tell Obama the chief cause of decline of monarch butterflies is GMO crops

52 Democrat Members of the US Congress have written to President Obama telling him that the chief cause of the 90% decline in monarch butterfly populations is GM herbicide-tolerant crops. Glyphosate herbicides sprayed on the GM crops have wiped out the monarchs’ food, milkweed.

The letter says, “With the advent of herbicide-resistant genetically engineered crops, the use of herbicides like glyphosate has increased from less than 20 million pounds per year in 1992 to over 250 million pounds per year in 2011.

“As a result, researchers now estimate that more than half of milkweed has been wiped out in the Midwestern Farm Belt since 1999, and more than 98% of milkweed has been wiped out from corn and soybean areas in Iowa due to the widespread overuse of glyphosate.”

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