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Monday, January 30, 2006
03:20 PM

Soybean Seed Treatment Fungicides
(Revised January 2006)
 

Soybean seed treatment fungicides can be effective in preventing or reducing damage from pathogens that may be carried on the seed or pathogens present in the soil that cause seed decay, seedling blights and root rots of soybean.  Soybean seed treatment fungicides are recommended if there is a concern about seed-borne diseases (ex. Phomopsis seed decay), if the field has a history of a specific early-season soybean disease (ex. field has a history of Phytophthora root rot) or conditions at planting are not favorable for rapid germination and emergence thus favoring early-season soybean diseases (ex. cold and wet soils might favor Pythium seed decay and seedling blight).   Soybean seed treatment fungicides will not improve the germination of seed that has a poor germination rate because of physical cracks in the seed coat, weathering during the seed production year and other physiological factors. 

 A number of products are labeled for use on soybean seed.  Basically these products can be divided into fungicides that are effective against the water mold fungi Pythium and Phytophthora or those effective against fungi other than Pythium and Phytophthora, i.e. Rhizoctonia, Fusarium, Macrophomina and other soil or seed-borne fungi.  Metalaxyl and mefenoxam are labeled for use against Pythium and Phytophthora.  These active ingredients are available alone or in combination with other soybean seed treatment fungicides.  Azoxystrobin, captan, carboxin, fludioxonil, PCNB, TBZ (thiabendazole) and thiram are labeled for use against fungi other than Pythium and Phytophthora.  These active ingredients are available alone, in combinations or in combination with products effective against Pythium and Phytophthora.  The following tables lists soybean seed treatment fungicides by active ingredients and is divided into products effective against water mold fungi, products effective against fungi other than water molds and products that contain both types of soybean seed treatment fungicides.    

As with many agricultural businesses, the fungicide seed treatment industries have gone through several mergers and acquisitions.  I have tried to make this list as comprehensive and current as possible; however, label registrations and products can change at any time.  Before using any agricultural pesticide, read and follow directions on the label accompanying that product.  Product names have been used for clarity.  Reference to specific trade names does not imply endorsement of these products by the University of Missouri; discrimination is not intended against similar products not listed.  Federal Law requires that bags containing treated seeds shall be labeled with the following information: “This seed has been treated with (common chemical names of active ingredients) fungicide(s).  Do not use treated seed for food, feed or oil purposes.”
--Dr. Laura Sweets, MU Pathologist

 

Soybean Seed Treatment Fungicides Effective Against Pythium and Phytophthora 

 

Active Ingredient

 

Examples of Product Trade Names (Company)

 

metalaxyl

 

Allegiance Dry (Trace Chemicals LLC)

Allegiance-FL (Gustafson LLC)

Allegiance-LS (Gustafson LLC)

 

mefenoxam

 

Apron XL LS (Syngenta)

 

Soybean Seed Treatment Fungicides Effective Against Fungi Other Than Pythium and Phytophthora 

 

Active Ingredient

 

Examples of Product Trade Names (Company)

 

azoxystrobin

 

Protege FL (Gustafson LLC)

 

captan

 

Bean Guard (Trace Chemicals LLC.)

Captan 30-DD (Gustafson LLC)

Captan 400 (Gustafson LLC)

Captan 400 C (Gustafson LLC)

Enhance (Trace Chemicals LLC)

HiMoly/Captan-D (Trace Chemicals LLC)

Rival Flowable (Gustafson LLC)

Vitavax M DC (Helena)

 

carboxin

 

Bean Guard (Trace Chemicals LLC)

Enhance (Trace Chemicals LLC)

Kernel Guard Supreme (Trace Chemicals LLC)

RTU-Vitavax-Thiram (Gustafson LLC)

Vitaflo-280 (Gustafson LLC)

Vitavax CT (Helena)

Vitavax M DC (Helena)

Vitavax M (Helena)

Vitavax-PCNB (Gustafson LLC)

Vitavax T-L (Trace Chemicals LLC)

Vitavax-200 (Gustafson LLC)

Vitavax-34 (Gustafson LLC)

 

fludioxonil

 

Maxim 4FS (Syngenta)

 

PCNB

 

Rival Flowable (Gustafson LLC)

RTU-PCNB (Gustafson LLC)

Vitavax-PCNB (Gustafson LLC)

 

TBZ (thiabendazole)

 

LSP (Gustafson LLC)

Rival Flowable (Gustafson LLC)

RTU Flowable (Gustafson LLC)

 

thiram

 

Protector-D (Trace Chemicals LLC)

Protector-L (Trace Chemicals LLC)

RTU Flowable (Gustafson LLC)

RTU-Vitavax-Thiram (Gustafson LLC)

Triple Noctin L (Trace Chemicals LLC)

42-S Thiram (Gustafson LLC)

Vitaflo-280 (Gustafson LLC)

Vitavax CT (Helena)

Vitavax M (Helena)

Vitavax T-L (Trace Chemicals LLC)

Vitavax-200 (Gustafson LLC)

 

Soybean Seed Treatment Fungicides Containing Products Effective Against Both Pythium and Phytophthora and Fungi Other Than Pythium and Phytophthora 

 

Active Ingredient

 

Examples of Product Trade Names (Company)

 

azoxystrobin + metalaxyl

 

SoyGard (Gustafson LLC)

 

captan + carboxin + metalaxyl

 

Bean Guard Allegiance (Trace Chemicals LLC)

 

captan + PCNB + thiabendazole + metalaxyl

 

Rival Pak (Gustafson LLC)

 

carboxin + PCNB + metalaxyl

 

Prevail (Trace Chemicals LLC)

 

carboxin + thiram + metalaxyl

 

Stiletto (Trace Chemicals LLC)

Stiletto Pak (Trace Chemicals LLC)

 

chloroneb + mefenoxam

 

Catapult XL (Agriliance, LLC)

Delta Coat XL (Agriliance, LLC)

 

chloroneb + metalaxyl

 

Catapult (Agriliance, LLC)

Delta-Coat AD (Agriliance)

 

fludioxonil

 

Maxim 4FS (Syngenta)

 

mefenoxam + fludioxonil

 

ApronMAXX RFC (Syngenta)

ApronMAXX RTA (Syngenta)

ApronMAXX RTA + moly (Syngenta)

Maxim XL (Syngenta)

Warden RTA (Agriliance)

 

thiram + metalaxyl

 

Protector-L-Allegiance (Trace Chemicals LLC)


University Outreach and Extension David Reinbott, reinbottd@missouri.edu
Agriculture Business Specialist
Last modified: January 30, 2006