Major Categories of Herbicides An herbicide is a substance used to kill unwanted plants

1. Major Categories of Herbicides • An herbicide is a substance used to kill unwanted plants • Pre emergence : • Pre-plant incorporated - herbicides are soil applied prior to planting and mechanically incorporated into the soil • Post emergence : • Contact herbicides - destroy only the plant tissue in contact with the chemical • Systemic herbicides - are translocated through the plant, either from foliar application down to the roots, or from soil application up to the leaves • Selective herbicides • Non-selective herbicides

2. Preemergence

6. Preemergence Cool Season Application

8. Translocated • Vantage, Poast sethoxydim translocated selective for grasses • Envoy clethodim translocated selective for grasses • Fusilade fluazifop-p-butyl translocated selective for grasses • Roundup glyphosate translocated nonselective • Basagran bentazon translocated nutsedge • Manage halosulfuron translocated nutsedge • Lontrel clopyralid translocated composites and legumes • Many labels 2,4-D translocated selective for broadleaf weeds

11. Contacts Finale glufosinate contact nonselective Gramoxone paraquat contact nonselective Reward diquat contact nonselective Goal oxyfluorfen contact nonselective Scythe pelargonic acid contact nonselective

13. Fumigants

15. Granular Combinations