Herbicide Basics
Retired UT Extension Agent, Mike Dennison, talks about the basics of herbicides. There are two kinds of herbicides: pre-emergent (these keep plants from sprouting) and post-emergent (these kill plants that are already growing). Using both kinds at the appropriate times gives the best overall control of weeds. There are also contact herbicides that kill what they touch and only what they touch and there are systemic herbicides that are transported through the plant and kill the entire plant.
Mike also talks about the levels of toxicity of different herbicides and compares them to common substances.
Mike was referencing the publication Introduction to weeds and Herbicides: https://extension.psu.edu/introduction-to-weeds-and-herbicides
Related Videos:
Pre-Emergent Herbicides
Three Common Herbicides
How To Wipe On Herbicide
Herbicide Modes Of Action
Related Resources:
Managing Weeds in Warm Season Lawns
2,4-D Technical Fact Sheet
Dicamba: Past, Present, and Future
Applying Pre-Emergent Herbicides to Lawns
Alternatives to Synthetic Herbicides for Weed Management in Container Nurseries
Recommended Chemicals for Weed and Brush Control
Mike also talks about the levels of toxicity of different herbicides and compares them to common substances.
Mike was referencing the publication Introduction to weeds and Herbicides: https://extension.psu.edu/introduction-to-weeds-and-herbicides
Related Videos:
Pre-Emergent Herbicides
Three Common Herbicides
How To Wipe On Herbicide
Herbicide Modes Of Action
Related Resources:
Managing Weeds in Warm Season Lawns
2,4-D Technical Fact Sheet
Dicamba: Past, Present, and Future
Applying Pre-Emergent Herbicides to Lawns
Alternatives to Synthetic Herbicides for Weed Management in Container Nurseries
Recommended Chemicals for Weed and Brush Control