Soybeans: Pythium Damping-Off (Pythium spp.)


Pub 812: Field Crop Protection Guide > Pub 812: Soybeans > Pythium Damping-Off

Field Crop Protection Guide 2011-2012, Order 2011-2012 publication

Table of Contents

  1. Integrated Pest Management Options
    • Seed Treatment
      • fludioxonil + metalaxyl-M – Apron Maxx RTA
      • fludioxonil + metalaxyl-M – Apron Maxx RFC
      • thiamethoxam + metalaxyl-M + fludioxonil - Cruiser Maxx Beans
      • metalaxyl – Allegiance FL, Apron FL
      • metalaxyl-M – Apron XL LS
  2. Related links...

 

Integrated Pest Management Options

Seed Treatment

This disease can occur on all soil types but crop losses are greatest in cold, wet, clay soils. Try to minimize soil compaction and remove excess moisture through increased drainage. Plant seed when soil temperatures are above 13°C (55°F). Treat seed with metalaxyl or metalaxyl-M. There is no known resistance but there is some degree of tolerance available in varieties. Consult with your seed company and the Ontario Oil and Protein Seed Crop Committee Variety Trial Results at www.gosoy.ca for variety profiles. Crop rotation has limited effect. Pythium control is less affected by product rate.

 
Active ingredient fludioxonil + metalaxyl-M
Trade name Apron Maxx RTA
Rate (product) 325 mL per 100 kg seed
Comments For both commercial seed treatment plants and on-farm treatment using standard gravity- or mist-type seed treatment equipment. Compatible with Rhizobium-based inoculants. Check with inoculant manufacturers prior to use. Ensure uniform coverage.

 

 
Active ingredient fludioxonil + metalaxyl-M
Trade name Apron Maxx RFC
Rate (product) 100 mL plus 230 mL of water per 100 kg seed
Comments For commercial and on-farm application. Compatible with Rhizobium-based inoculants. Check with inoculant manufacturers prior to use. Do not graze or feed livestock on treated areas for 45 days after planting.

 

 
Active ingredient thiamethoxam + metalaxyl-M + fludioxonil
Trade name Cruiser Maxx Beans
Rate (product) 195 mL per 100 kg seed
Comments For use in commercial seed treatment facilities only. Compatible with Rhizobium-based inoculants. Check with inoculant manufacturers for details prior to use. Do not graze or feed livestock on treated areas for 45 days after planting.

 

 
Active ingredient metalaxyl
Trade name Allegiance FL
Rate (product) 46-93 mL per 100 kg seed
Comments Do not graze or feed livestock on seeded area for 4 weeks after planting.

 

 
Active ingredient metalaxyl
Trade name Apron FL
Rate (product) 46-93 mL per 100 kg seed
Comments Do not graze or feed livestock on seeded area for 4 weeks after planting.

 

 
Active ingredient metalaxyl-M
Trade name Apron XL LS
Rate (product) 20-40 mL per 100 kg seed
Comments For use in commercial seed treatment facilities only. Do not use in hopper-box, planter-box, slurry-box or other non-commercial seed treatment applications at or immediately before planting. Do not graze or feed livestock on seeded area for 4 weeks after planting. Read label for more information regarding resistant strains of fungus.

 


Related links...

 


For more information:
Toll Free: 1-877-424-1300
E-mail: ag.info.omafra@ontario.ca
Author: OMAFRA Staff
Creation Date: 2 May 2011
Last Reviewed: 11 May 2011