pendimethalin (Prowl H2O)
Rate 1.9 to 3.8 lb ai/A
Time Apply to dormant, established alfalfa before dodder germinates.
Remarks Besides dodder, treatment controls most annual grasses and certain broadleaf weeds as they germinate. Controls most annual grasses and several broadleaf weeds, including dodder, as they germinate. Incorporation with rain or sprinkler irrigation enhances control. Will not control emerged weeds.
Caution Do not apply to seedling alfalfa. Preharvest interval is 50 days for hay or forage. Do not exceed 4 quarts/A product per year. Refer to label for crop rotation restrictions.
Site of action Group 3: microtubule assembly inhibitor
Chemical family Dinitroaniline