UACES Facebook Fungicides and Mix Rates for the Major Rice Diseases
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Fungicides and Mix Rates for the Major Rice Diseases

by Yeshi Wamishe, Extension Plant Pathologist - Rice, and Jarrod Hardke, Rice Extension Agronomist - July 8, 2021

The time is getting near for rice disease pressure to increase. Have you planned your fungicides to manage the major rice diseases that may prevail in your field? Remember, the crop benefits increase with a well-managed field.  Here below are the commercial fungicides labeled for rice in Arkansas, showing the minimum and maximum rates. Mix rates are also given if you wish to make mixes yourself.

Table 1:  Fungicides for major rice diseases.

Product Min-Max (fl oz/A) Strobilurin Triazole Other
Quadris 8.5 - 12.5 azoxystrobin    
Stratego 16.0 - 19.0 trifloxystrobin propiconazole  
Flint Extra 3.8 - 4.7 trifloxystrobin    
GEM RC 3.8 - 4.7 trifloxystrobin    
Quilt 14.0 - 34.5 azoxystrobin propiconazole  
Quilt Xcel 14.0 - 27.0 azoxystrobin propiconazole  
Elegia 32     flutolanil
Note:  Elegia helps to suppress resistant sheath blight pathogen.  Resistant sheath blight has not been reported in Arkansas; however, rotating fungicides with different modes of action is known to delay resistance.

 

Table 2:  Rates of active ingredients in Stratego.

Product Labeled Rate

Contains Tilt Equivalent Rate

Contains GEM 500 SC or GEM RC Equivalent Rate

  fl oz / A
Stratego

16.0

4.6

4.0

Stratego

17.0

4.9

4.2

Stratego

18.0

5.2

4.5

Stratego

19.0

5.5

4.7

Note:  In the absence of Stratego, Flint Extra can be used with various rates of Tilt as desired.

 

Table 3.  Rates of active ingredients in Quilt.

Product Labeled Rate Contains Quadris Equivalent Rate Contains Tilt Equivalent Rate
  fl oz / A
Quilt 14.0 4.2 4.0
Quilt 15.0 4.5 4.3
Quilt 16.0 4.8 4.6
Quilt 17.0 5.1 4.9
Quilt 18.0 5.4 5.2
Quilt 19.0 5.7 5.5
Quilt 20.0 6.0 5.8
Quilt 21.0 6.3 6.1
Quilt 22.0 6.6 6.4
Quilt 23.0 6.9 6.6
Quilt 24.0 7.2 6.9
Quilt 25.0 7.5 7.2
Quilt 26.0 7.8 7.5
Quilt 27.0 8.0 7.8
Quilt 28.0 8.3 8.1
Quilt 29.0 8.6 8.4
Quilt 30.0 8.9 8.7
Quilt 31.0 9.2 9.0
Quilt 32.0 9.5 9.2
Quilt 33.0 9.8 9.5
Quilt 34.0 10.1 9.8
Quilt 34.5 10.3 10.0

 

Table 4:  Rates of active ingredients in Quilt Xcel.

Product Labeled Rate Contains Quadris Equivalent Rate Contains Tilt Equivalent Rate
  fl oz / A
Quilt Xcel 15.75 8.9 4.5
Quilt Xcel 16.00 9.1 4.5
Quilt Xcel 17.00 9.6 4.8
Quilt Xcel 17.50 9.9 5.0
Quilt Xcel 18.00 10.2 5.1
Quilt Xcel 19.00 10.8 5.4
Quilt Xcel 20.00 11.3 5.7
Quilt Xcel 21.00 11.9 5.9
Quilt Xcel 22.00 12.5 6.2
Quilt Xcel 23.00 13.0 6.5
Quilt Xcel 24.00 13.6 6.8
Quilt Xcel 25.00 14.2 7.1
Quilt Xcel 26.00 14.8 7.4
Quilt Xcel 27.00 15.3 7.6

 

        Table 5.  Rates of active ingredients in Amistar Top

Product Labeled Rate Contains Quadris Equivalent Rate Contains Difenoconazole Equivalent Rate
  fl oz / A lb
Amistar Top 10 8 0.081
Amistar Top 11 8.8 0.089
Amistar Top 12 9.6 0.097
Amistar Top 13 10.4 0.105
Amistar Top 14 11.2 0.113

 

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