🧪 Pesticide Dilution Calculator

Safe and Effective Chemical Application: A Sprayer's Guide

Applying herbicides and pesticides requires precision. Using too much of a product ("overdosing") can result in phytotoxicity, where you kill the grass you intended to protect. Using too little ("underdosing") often results in poor control and the development of resistant weed populations.

Mastering the Tank Mix

The order in which you add materials to your spray tank is critical to prevent the mixture from "clogging" or becoming ineffective. Always follow the **WALES** method:

• Wettable powders & Dry flowables first.
• Agitate the tank thoroughly.
• Liquid flowables and suspensions.
• Emulsifiable concentrates.
• Surfactants or Oils last.

When to Use a Surfactant

Many weed killers require a "Non-Ionic Surfactant" (NIS) or "Methylated Seed Oil" (MSO). These products reduce the surface tension of the water, allowing the chemical to stick to the waxy leaf of the weed rather than beading up and rolling off. Without the correct adjuvant, your herbicide may be up to 50% less effective.