Soybeans: Pythium Damping-Off

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Soybeans: Pythium Damping-Off (Pythium spp.)

Author:	OMAFRA Staff
Creation Date:	04 July 2005
Last Reviewed:	28 July 2007

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

Excerpt from Chapter 3, Field Crop Protection Guide, Order this publication

Integrated Pest Management Options
- Seed Treatment
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Integrated Pest Management Options

Seed Treatment

Can occur on all soil types but losses are greatest in cold, wet, clay soils. Minimize soil compaction and remove excess moisture through increased drainage. Plant when soil temperatures are above 13°C (55°F). Treat seed with metalaxyl or metalaxyl-M. No known resistance but some degree of tolerance available in cultivars. Rotation has limited effect. Pythium control less affected by rate.

fludioxonil + metalaxyl-M – Apron Maxx RTA
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.

metalaxyl – Allegiance FL, Apron FL
	Allegiance FL	Apron FL
Active ingredient	metalaxyl	metalaxyl
Trade name	Allegiance FL	Apron FL
Rate (product)	46-93 mL per 100 kg seed	46-93 mL per 100 kg seed

Comments
Do not graze or feed livestock on seeded area for 4 weeks after planting.

metalaxyl-M – Apron XL LS
Active ingredient	metalaxyl-M
Trade name	Apron XL LS
Rate (product)	20-40 mL per 100 kg seed

Comments
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 livestockk on seeded area for 4 weeks after planting. Read label for more information regaring resistant strains of fungus.

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