Dodder Control in Seed Fields

Dodder control: Three steps to excellent control include:   

1. Mow hay as close as possible at the cutting before going for seed. Dodder lives on alfalfa plants, so all germinated dodder can be controlled if all alfalfa top- growth is removed. Essentially no dodder germinates after June in rain-fed alfalfa fields.  
2. Finish killing the dodder and tops of alfalfa with a contact herbicide such as Gramoxone^® Extra. To minimize recovery time of alfalfa, treat stands within 5 days of cutting.  
3. Good coverage and spray conditions are important. Application instructions include:  

• a) Add non-ionic surfactant at 1 qt/100 gallon spray mix;  
• b) Use flat-fan nozzles;  
• c) Use 60 psi pressure;  
• d) Use spray volume of at least 20 GPA with a ground rig;  
• e) Spray when wind is 5 mph or less.  

Be sure to read label and use suggested application rates.