The applied rate is between 3 and 6 fl ozs per treated acre.
It seems you are working from field acre.
The rate of application per treated acre is supposed to be between 3 and 6 fl. ozs per acre.
The label says to adjust to treated acre per when spraying in bands.





The label for asparagus says 3 to 7 ozs per treated acre.

 

"Treated acres" refers to the actual area treated when applying herbicides in bands, while "field acres" includes both treated and untreated areas.
The application rate should be the same for both band and broadcast applications, but the treated acreage will vary based on the band width. 

 

• Treated acres: When applying herbicides in bands, only a portion of the field is treated. To calculate treated acres, multiply the field acreage by the ratio of the band width to the row width. 
• For example, a 50% band on a 10-acre field would treat 5 acres. 
   
• Field acres: This includes both treated and untreated areas. 
   

The amount of water and herbicide should be calculated for the treated acres. For example, a 3-pound-per-acre rate for broadcast application would require 3 pounds of herbicide per crop acre. However, to apply the same herbicide in 10-inch bands on 30-inch rows, only 1 pound would be needed. To calculate the amount needed for band application, multiply the broadcast rate by the band width divided by the row width