By Michael Neal, Arizona Public Service In 2006, Arizona Public Service (APS) began reclearing its transmission rights-of-way (ROW), but the utility did not have a formal herbicide program in place. A more formal approach would make sense in the desert southwest, as there are significant challenges to applying herbicides across seven different climate zones, within varying biotic communities, often combined with difficult terrain and limited accessibility to power lines. APS decided ...

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