Late Blight Risk Monitoring- Michigan State University
2009

Product
Green 
Rate
Yellow 
Rate
Orange
Rate
Pink 
Rate
Red 
Rate

Season Limit:
(lbs or pts of product)

pt or lb/acre pt or lb/acre pt or lb/acre pt or lb/acre pt or lb/acre per acre
Residual Surface Protectant Fungicides 
Chlorothalonil-based compounds
Bravo WS 6SC 1.0  1.5 1.5 1.5 1.5 15 pts
Bravo ZN WS  1.0  1.5 1.5 2.2 2.2 22.5 pts
Bravo Ultrex 0.9  1.36 1.36 1.36 1.36 13.6 lbs
Echo 720 1.0  1.5 1.5 1.5 1.5 15 pts
Echo ZN  1.5  2.2 2.2 2.2 2.2 22.5 pts
Equus 720 1.0  1.5 1.5 1.5 1.5 15 pts
Equus DF  1.5  2.2 2.2 2.2 2.2 13.6 lbs
EBDC-based compounds
Dithane DF Rainshield NT 1.5 2.0 2.0 2.0 2.0 15 lbs
Manex II 4SC 2.25 3.0 3.0 3.0 3.0 22.5 pts
Manzate 75WP 1.5 2.0 2.0 2.0 2.0 15 lbs
Penncozeb 80W or 75DF 1.5 2.0 2.0 2.0 2.0 14 or 15 lbs
Polyram 80DF 1.5 2.0 2.0 2.0 2.0 14 lbs
Copper-based compounds
Champ 4.6FL 2.67 2.67 2.67 2.67 2.67 N/A
Kocide 4.5FL 2.67 2.67 2.67 2.67 2.67 N/A
Organotin-based compounds (use only in combination with chlorothalonil or EBDC)
Supertin 80DF 1.5 2.0 2.0 3.75 3.75 11.25 oz
Agritin 80DF 1.5 2.0 2.0 3.75 3.75 11.25 oz
New Compounds (as of 2004)
Tanos
0.375
0.5
0.5
0.5
0.5
3.3 lbs
Quadris Opti
1.6
1.6
1.6
1.6
1.6
24 pts
Reason 500SC (use only in combination with chlorothalonil or EBDC)
0.34
0.5
0.5
0.5
0.5
1.5 pts
 
Residual Systemic Protectant Fungicides 
Acrobat 50WP (use only in combination with chlorothalonil or EBDC) 7 Day 0.32 0.4 0.4 0.4 0.4 2.2 lbs  
5 Day  0.25 0.32 0.32 0.4 0.4 2.2 lbs  
Acrobat MZ        2.25 2.25 11.25 lbs
Curzate 60DF  (use only in combination with chlorothalonil or EBDC) 0.21 0.21 0.21 0.21 0.21 22.4 lbs
Previcur Flex 6SC (use only in combination with chlorothalonil or EBDC)
0.7
0.9
0.9
1.2
1.2
6 pts
Amistar 80WG (for late blight use only in combination with chlorothalonil or EBDC) 0.25 0.25 0.25 0.25

0.25

 

2.5 lbs
Headline 2.09SC (for late blight use only in combination with chlorothalonil or EBDC) 0.75 0.75 0.75 0.75

0.75

 

4.5 pts
Gem (for late blight use only in combination with chlorothalonil or EBDC) 0.5 0.5 0.5 0.5

0.5

 

3.0 lbs
Gavel 75WDG 1.5 2.0 2.0 2.0

2.0

 

12 lbs
Omega 500F 0.34 0.34 0.34 0.34

0.34

 

3.5 pts
Phostrol (for late blight use only in combination with copper products, chlorothalonil or EBDC) 2.5 2.5 10.0 10.0

10.0

 

N/A

DISCLAIMER
References to commercial products or trade names on this page are provided as a convenience only and do not imply endorsement by MSU Extension or bias against those not mentioned.

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Page Last Updated - April 17, 2009