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How to Manage Pests

Pesticides: Water-Related Risks of Active Ingredients

About this database

All values are from the Pesticide Properties Database developed and maintained by USDA-NRCS, except where noted. The risk ratings include the NRCS WIN-PST adjustments for application area, rate, and method. Soil type and field conditions may be customized.

Almond: Peach Twig Borer

Comparison among pesticides included in UC IPM Pest Management Guideline

when applied under these conditions.

Soil type and field conditions       
  • DEFAULT soil highly susceptible to pesticide movement
  • Field slope is less than 15% (Default)
  • Field does not have macropores (Default)
  • Field does not have a high water table (Default)

Site conditions    Change*
  • Low probability of rainfall/irrigation expected within 7-14 days of pesticide application (Default)

Application conditions    Change^
  • Application to more than 50% of the field (M) (Default)
  • Surface applied (S) (Default)
  • Application rate more than 1/4 pound AI per acre (Q) (Default)

note Application rate, method, soil type, field conditions, and site condition may not be typical for this crop or your location.
To change these conditions to match your own, use the "change" buttons or links.

See detail
Table
Data file
Delete Active ingredient (AI)
(Sample trade name)

Application
conditions

Change^?

Potential Pesticide Hazard on High-Risk Soils
Fish (Long-term) Human (Long-term)  
Leaching Adsorbed runoff Solution runoff Leaching Solution runoff pH
Azinphosmethyl
(Guthion)		 M-S-Q
 
H
   
I
X
     
L
   
I
n/a
Bacillus thuringiensis ssp. kurstaki
 M-S-Q   no known risk** no known risk** no known risk** no known risk** no known risk** no known risk**
Bifenthrin
(Brigade)		 M-S-U
   
I
     
L
 
H
       
V
     
L
n/a
Chlorpyrifos
(Lorsban)		 M-S-Q
 
H
     
L
 
H
   
I
   
I
n/a
Cyfluthrin
(Baythroid)		 M-S-U
   
I
     
L
 
H
       
V
       
V
n/a
Diazinon
 M-S-Q
 
H
 
H
X
   
I
 
H
n/a
Diflubenzuron
(Dimilin)		 M-S-Q
     
L
     
L
   
I
       
V
       
V
n/a
Esfenvalerate
(Asana)		 M-S-U
   
I
   
I
 
H
       
V
       
V
n/a
Lambda-Cyhalothrin
(Warrior with Zeon)		 M-S-U
   
I
     
L
 
H
     
L
   
I
n/a
Methidathion
(Supracide)		 M-S-Q
 
H
   
I
X
   
I
 
H
n/a
Methoxyfenozide
(Intrepid)		 M-S-Q
       
V
       
V
       
V
       
V
       
V
n/a
Narrow range oil
(Supreme)		 M-S-Q   no known risk** no known risk** no known risk** no known risk** no known risk** no known risk**
Permethrin
(Ambush)		 M-S-U
   
I
       
V
 
H
       
V
     
L
n/a
Spinetoram
(Delegate)		 M-S-Q
     
L
       
V
     
L
       
V
       
V
n/a
Spinosad
(Success)		 M-S-Q
       
V
       
V
       
V
       
V
       
V
n/a
key-blue No mitigation measures needed          key-red  Mitigation measures may be needed
Shorter bars indicate less risk
** No known risk: UC IPM knows of no water quality risk associated with this pesticide.

^Change application conditions

  1. Click "change" button under "application conditions" for a pesticide.
  2. Change application conditions below.
  3. Click Change/Delete button above.
What area is being treated? More information

(M) applied to more than 50% of the field  (B) applied to more than 10%, up to 50% of the field
(P) applied to 10% or less of the field
How much pesticide comes in contact with soil? More information

(S) surface applied   (F) foliar applied   (I) soil incorporated

What is the application rate? More information

(Q) more than 1/4 pound AI per acre  
(L) less than or equal to 1/4 pound AI per acre but at least 1/10 pound AI per acre
(U) less than 1/10 pound AI per acre

*Change site condition

  1. Change site condition below.
  2. Click Change button.

This setting effects all pesticides in the table.

 Rainfall/Irrigation:   low probability   high probability

     (within 7-14 days of pesticide application)

Key
Application conditions

Hazard

Area treated
M = more than 50% of field (broadcast application)
B = 50% to 10% of field
P = 10% or less of field (spot treatment)

Soil contact
S = surface applied
F = foliar applied (directed spray at nearly full canopy)
I = soil incorporated (with light tillage or irrigation)

Application rate
Q = more than 1/4 lb AI/acre
L = less than or equal to 1/4 lb AI/acre but at least 1/10 lb AI/acre
U = less than 1/10 lb AI/acre

 V = Very low
L = Low
I = Intermediate
H = High
X = Extra high

Statewide IPM Program, Agriculture and Natural Resources, University of California
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