The purpose of this research is to collect performance data to support registration of sulfentrazone herbicides on basil. Leafy green and culinary herb growers are affected by a limited number of herbicides, resulting in tremendous manual weed removal. Therefore, screening existing preemergent herbicides and collecting their performance on weed control will help with their registration to provide California leafy green and herb growers more choices for chemical weed suppression and save labor cost for manual weeding.

This research is sponsored by the Western IR-4 and collaborated with Ratto Bros, Inc. in Modesto, CA. Two separate fields were seeded with four basil cultivars (‘Passion,' ‘Obsession,'...