Integrated Desease Management Guide For Small Grain

 

Disease Management Practices Seed and Seedling Diseases Root and Crown Diseases Head Diseases Virus Diseases

 

Seed and seedling disease control in small grains


 
Crop Disease Fungicide common name Fungicide trade name Remarks
Barley, Oats, Rye, Wheat Seed decay and seedling blights including the scab fungus (seed treatments do not control the head blight phase of scab disease) captan Captan 30-DD Thiram formulations are not registered for oats. Vitavax formulations, Raxil-Thiram, and Terra-Coat LT-2 are not registered for rye. Use according to instructions on label. Do not use treated seed for feed or food.
captan Captan 300
captan Captan 400
captan Captan 400DD
thiram Thiram-50WP
thiram Gustafson 42-S
carboxin Vitavax Not for use on rye
carboxin + captan Vitavax 20-20 Not for use on rye
carboxin + thiram Vitavax 200 Not for use on rye
difenconazole + mefanoxam Dividend XL RTA For wheat use only. Apply 5-10 fl oz /100 pounds of seed.
difenconazole + mefanoxam Dividend Apron XL LS For wheat use only. Apply 0.5 - 1.0 fl oz/100 pounds of seed.
PCNB Gustafson LT-2N Not for use on rye
tebuconazole + thiram Raxil-Thiram Not for use on rye
Barley Loose smut (Ustilago nuda),
Covered smut (Ustilago hordei)
carboxin Vitavax Use according to instructions on label. Must be applied as a slurry treatment for complete coverage.
carboxin Vitavax 34
carboxin Vitavax 75W
carboxin + captan Vitavax 20-20
carboxin + thiram Vitavax 200
tebuconazole + thiram Raxil-Thiram
Covered smut (Ustilago hordei) PCNB Terra-Coat LT-2 Use according to instructions on the label. Should be applied as a slurry treatment for complete coverage.
Barley stripe (Helminthosporium gramineum) imazalil Gustafson Flo-Pro IMZ Use according to label instructions.
Oats Loose smut (Ustilago avenae), Covered smut (Ustilago kolleri) carboxin Vitavax Use according to instructions on label. Must be applied as a slurry treatment for complete coverage.
carboxin Vitavax 34
carboxin + thiram Vitavax 200
Loose smut (Ustilago avenae) PCNB + tebuconazole + thiram Terra-Coat LT-2 Raxil-Thiram Use according to instructions on the label. Should be applied as a slurry treatment for complete coverage.
Wheat Loose smut (Ustilago tritici) carboxin Vitavax Use according to instructions on label. Must be applied as a slurry treatment for complete coverage.
carboxin Vitavax 34
carboxin + captan Vitavax 20-20
carboxin + thiram Vitavax 200
difenconazole + mefanoxam Dividend XL RTA Apply 5-10 fl oz/100 Ibs of seed.
difenconazole + mefanoxam Dividend Apron XL LS Apply 0.5-1.0 fl oz/100 Ibs of seed.
tebuconazole + thiram Raxil-Thiram  
triadimenol Baytan 30 Flowable This material is only registered for application by certified seed conditioners and is not available for farmer application. Rate is 0.75-1.5 fl oz/100 lb of seed. Caution: Treated seed should not be planted late in the planting season or planted more than 1.5 inches deep. Use according to label instructions.
Wheat Common bunt or
Stinking smut (Tilletia caries)
carboxin Vitavax Use according to instructions on label. Must be applied as a slurry treatment for complete coverage.
carboxin Vitavax 34
carboxin + captan Vitavax 20-20
carboxin + thiram Vitavax 200
PCNB Gustafson LT-2N  
tebuconazole + thiram Raxil-Thiram  
difenconazole + mefanoxam Dividend XL RTA Apply 5-10 fl oz/100 Ibs of seed.
difenconazole + mefanoxam Dividend Apron XL-LS Apply 0.5-1.0 fl oz/100 Ibs of seed.
Wheat Common root rot complex(Helminthosporium sativum and Fusarium spp.) imazalil Gustafson Flo-Pro IMZ Use according to label instructions.
difenconazole + mefanoxam Dividend XL RTA Apply 5-10 fl oz/100 Ibs of seed.
difenconazole + mefanoxam Dividend Apron XL-LS Apply 0.5-1.0 fl oz/100 Ibs of seed.
Wheat Powdery mildew (Erysiphe graminis f.sp. tritici) tridimenol Bayton 30 Flowable

This fungicide will prevent the overwintering of powdery mildew and leaf rust in susceptible cultivars.

Rate is 1.5 fl oz/100 lb of seed. It is only registered for application by certified seed conditioners and is not available for farmer application.

Caution: Treated seed should not be planted late in planting season or planted more than 1.5 inches deep. Use according to label instructions.

Wheat Leaf rust (Puccinia recondita) difenconazole + mefanoxam Dividend XL RTA Apply 5-10 fl oz/100 Ibs of seed.
difenconazole + mefanoxam Dividend Apron XL-LS Apply 0.5-1.0 fl oz/100 Ibs of seed.
       

Dividend formulations provide a degree of fall season powdery mildew, leaf rust, and leaf and plume blotch in winter wheat. For full season control, foliar fungicides may be required in the spring on cultivars that are susceptible to moderately susceptible to powdery mildew.


Last updated March 05, 1999.