| Weed Problem | Chemical rate per acre | Product per acre | Remarks |
|---|---|---|---|
| Reduced triazine carryover and optimum control of virorous orchardgrass sods | Paraquat 0.5 lb
+ surfactant followed by paraquat 0.5 lb + surfactant 10-14 days later + residual herbicide treatments as required for specific infestations |
Gramoxone Inteon 2.0 pt
+ surfactant as labeled followed by Gramoxone Inteon 2.0 pt + surfactant as labeled 10-14 days later + residual herbicide(s) |
Use double paraquat (4.0 pints total) applications for vigorous orchardgrass stands where single applications have not been effective. Observe paraquat use instructions and precautions. Tank-mix with residual herbicides as listed below for the specific weed infestation. High triazine rates are not required for orchardgrass control where the double paraquat application is used. |
| Alternate method for control of tall fescue and orchardgrass sods | Glyphosate 1.0-3.0 lb
+ residual herbicide treatment as required for specific infestation |
Roundup Weather Max 0.7-1.9 qt
or Touchdown Total 0.75-2.2 qt or other labeled glyphosate formulation + surfactant as labeled + residual herbicides |
For fescue control, apply 3.0 pound rate of Roundup Weather Max or Touchdown Total when most plants have reached the boot stage. For orchardgrass control, apply the 2.0 pound rate of Roundup Weather Max or Touchdown Total when most plants have reached the early boot to seedhead stage. 1.0 to 1.5 pounds of Roundup Weather Max or Touchdown Total can be used in 3 to 10 gallons of water for orchardgrass control when orchardgrass is a minimum of 12 inches tall. Use of atrazine with these treatments is recommended for optimum sod control. |
