Spurgeplus
ARS News has the results of a study showing that aerial spraying of herbicide on leafy spurge (Euphorbia esula) on ranchland led to increased populations of the spurge and had a decade-plus impact on the native plant species there. The study looked at the after effects of a one-time application of the herbicide - presumably, more spraying would lead to a reduction in the amount of spurge, but would also further negatively impact the native plant species.
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