How to Manage Pests

Pesticides: Water-Related Toxicology of Active Ingredients

Step 2. How will the pesticide be applied?

Because how you apply the pesticide can impact the risks to water quality, indicate

• How much area you're treating.
• How much pesticide will come in contact with the soil.
• The application rate.

Click Go after making your selections.

What area is being treated?

• Will you apply the pesticide to more than 50% of the field?
• Or will you treat less than 50% of the field, by using strip applications or spot sprays, for instance?

How much pesticide will come in contact with the soil?

• Surface applied means that you will apply the pesticide to bare ground or an incomplete canopy.
• Foliar applied means that you will apply the pesticide when the crop or weeds are at nearly full canopy.
• Soil incorporated means that you will incorporate the pesticide into the soil.

What is the application rate?

• Rates above 1/4 pound of active ingredient per acre are considered the "standard" rate by WIN-PST.
• Rates from 1/10 to 1/4 pound active ingredient per acre are considered to be low by WIN-PST.
• Rates less than 1/10 pound of active ingredient per acre are considered to be ultra low by WIN-PST.

Note:

• If you don’t know the percent active ingredient for a product, to use to calculate pounds of active ingredient, you can look up the product in an online database.
  • Pesticide products from California Department of Pesticide Regulation
  • Pesticide products from National Pesticide Information Retrieval System

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