Counties in green contain at least one population of kochia with genetically confirmed resistance to Groups 2, 9, and 14 herbicides. Gray counties are those that submitted samples, but did not have resistance to all three herbicide groups. (Photo source: Zack Bateson, Research Director, National Agricultural Genotyping Center)

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Counties in green contain at least one population of kochia with genetically confirmed resistance to Groups 2, 9, and 14 herbicides. Gray counties are those that submitted samples, but did not have resistance to all three herbicide groups. (Photo source: Zack Bateson, Research Director, National Agricultural Genotyping Center)