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Agronomy • 2m 3s
Darren Hefty talks about applying lime, or calcium carbonate, to crop fields.
Up Next in Agronomy
The Hefty brothers identify puncturevine and share tips for control.
The Hefty brothers offer tips on getting smallflower buttercup under control.
Herbicide Modes of Action
Darren and Brian Hefty explain why farmers use different categories of herbicides, or "modes of action", when controlling weeds in crop fields.