Irrigation in the Pacific Northwest

Chemical Injection Rate (Batch/Bulk Application)

Calculates the chemical injection rate for batch or bulk chemical applications. Learn more about the units used on this page. More information on calculating chemigation injection rates.

Chemical Injection Volume:
Injection Time:
Chemical Injection Rate:



The Equation

Use this equation to determine the minimum amount of water that must be mixed with dry chemicals to fully dissolve the chemicals in the solution.


= Minimum volume of water required to add in order to compleatly dissolve the dry chemical.

= Weight of the chemical to be mixed in lbs.

= Solubility of the chemical according to the pesticide label of fertilizer solution charts. (lb/gal)


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