12 HERBICIDAL CONTROL 



POUNDS-PER-ACRE FORMULAS; MAKING SPRAY SOLUTIONS FOR A PARTICULAR NUMBER 

 OF POUNDS PER ACRE OF ACID EQUIVALENT OR ACTIVE INGREDIENTS: 



Using liquid herbicide : 



The -pints needed per 100 gallons of solution = 



wanted lbs, acid equiv. or act, ingr. per acre X 800 

 gals, epray per acre X lbs. acid eq. or act. ingr. in 1 gal. 



Example: If a 2,4-D formulation containing 4 pounds acid equivalent per 

 gallon is to be applied at 5 pounds acid equivalent in 120 gal- 

 lons of solution per acre, the pints needed per 100 gallons of 

 solution are: 



5 X800 ^„ . ^ 



■ or 8.3 pmts 



120 X 4 



The milliliters needed per gallon of solution = 



wa nted lbs, acid equiv. or act, ingred. per acre X 3785 



gals, spray per acre X lbs. acid eq. or act. ingr. in 1 gal. 



Using solid (dry) herbicide : 



The pounds needed per 100 gallons of solution = 



wanted lbs, acid equiv. or act, ingred. per acre X 100 

 gals, spray per acre X % acid eq. or act. ingred. 



Example: If a formulation of dalapon containing 71% acid equivalent is 

 to be sprayed at the rate of 30 pounds acid equivalent in 200 

 gallons of solution per acre, the pounds of herbicide needed per 

 100 gallons of solution are: 

 30 X 100 



200 X .71 



or 21.1 pounds 



POUNDS-PER-100-GALLONS FORMULAS; MAKING SPRAY SOLUTIONS WITH A PARTICULAR 

 NUMBER OF POUNDS OF ACID EQUIVALENT OR ACTIVE INGREDIENTS PER 100 GALLONS: 



Using liquid herbicide : 



The pints needed per 100 gallons of solution = 



wanted lbs. acid equiv. or act. ingred. per 100 gals. X 8 

 lbs. acid equiv. or act. ingred. in 1 gal. herbicide 

 Example: If a 2,4,5-T formulation containing 4 pounds acid equivalent 

 per gallon is used to prepare a solution with 5 pounds acid 

 equivalent per 100 gallons, the pints needed per 100 gallons are: 



5X8 _ . 

 — : — or 10 pmts 

 4 



Using solid (dry) herbicide : 



The pounds needed per 100 gallons of solution = 



wanted lbs. acid equiv. or act. ingred. per 100 gals. 



% acid equiv. or act. ingred. in the herbicide 



Example: If an Ammate formulation containing 95% active ingredients 



is used to prei are a solution with 60 pounds active ingredients 



per 100 gallons of solution, the pounds per 100 gallons are: 



60 



or 63.2 poimds 



0.95 



