For anyone interested, here is a comparison of Dual Magnum vs. Outlook on tropical spiderwort control in peanut from some past research of Dr. Prostko (UGA Weed Specialist)
Outlook is the activated isomer of the herbicide formerly sold as Frontier (dimethenamid). If you are not very familiar with Outlook, it is in the same herbicide family as Dual Magnum (chloroacetamide), has the same mode of action (very long chain fatty acid synthesis inhibitor – WSSA#15), and this active ingredient has been around since the 1990’s.
If any Worth County grower has any fields where tropical spiderwort has or will be a problem in peanut let us know. We will look to collaborate with Dr. Prostko on additional research with testing some product efficacy.