Carrington Research Extension Center
North Dakota State University
NDSU Extension Service
North Dakota Agricultural Experiment Station

Ag Alert


July 8, 1999

DRY BEAN HERBICIDE APPLICATION TIMING LIMITS AND CULTIVATION TIMING

Delays in herbicide application in dry edible bean may have occurred due to frequent rain, windy conditions, etc. The following are application timing limits for post-emergence herbicides based on dry bean stage: Pursuit, Raptor = Prior to flowering. Assure II, Poast, and Select = 30 days or more before harvest. Basagran = No crop stage restrictions. Refer to the herbicide label for other herbicide application timing considerations including weed size.

Also, consider the following label recommendations regarding the timing of between-row cultivation following post-emergence herbicide application in dry bean: Basagran = Do not cultivate within 5 days of application. Timely cultivation 2-3 weeks after application may assist weed control. Pursuit and Raptor = For maximum weed control, cultivate 7-10 days following application. Assure II = Do not cultivate within 7 days after application as damage to the grass roots may result in unsatisfactory control. Poast = Do not cultivate within 7 days after application. Cultivating 7-14 days after treatment may help season-long control. Select = Cultivation of treated grasses within 7 days after application may reduce weed control.


Greg Endres, Area Extension Specialist/Cropping Systems, Email: gendres@ndsuext.nodak.edu
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