Dry Edible Beans: Rhizoctonia (Rhizoctonia solani)

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Pub 812: Field Crop Protection Guide > Chapter 5: Dry Edible Beans > Rhizoctonia

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

Table of Contents

1. Integrated Pest Management Options
   • azoxystrobin - Dynasty 100FS
   • carbathiin + thiram – Vitaflo 280
   • fludioxonil + metalaxyl-M – Apron Maxx RTA, Apron Maxx RFC
   • thiamethoxam + metalaxyl-M + fludioxonil - Cruiser Maxx Beans
   • trifloxystrobin - Trilex FS
2. Related Links...

Integrated Pest Management Options

This disease occurs when conditions are cool and wet during planting or when these conditions result in a delay in seedling emergence or developement. Mid-to-late-season moisture stress (dry conditions) can increase the disease incidence.

Management practices include:

1. selecting varieties with good general tolerance to root rots,
2. promoting root growth through a good fertility program,
3. rotating crop (3 years between bean crops),
4. not overworking the soil and avoiding working it when it is wet,
5. removing excessive water through increased tile drainage and minimizing compaction and,
6. applying seed treatments that protect the plant during germination and early growth.

Consult your seed company and the Ontario Pulse Crops Committee Variety Trials at www.ontario.ca/crops.

Due to the threat of anthracnose infection to this crop, ALL edible bean seed should be treated with DCT or Dynasty 100FS. See Anthracnosae (Colletotrichum lindemuthianum), previous page, for more details. Other seed treatment products may be needed to protect against other edible bean diseases.

Active ingredient	azoxystrobin
Trade name	Dynasty 100FS
Rate (product)	10 mL per 100 kg seed
Comments	One application as a seed treatment. For additional disease control, use in combination with Apron Maxx RFC or Cruiser Maxx Beans.

 

Active ingredient	carbathiin + thiram
Trade name	Vitaflo 280
Rate (product)	260 mL per 100 kg seed
Comments	Ensure good seed coverage.

 

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 for details prior to use. Do not graze or feed livestock on treated areas for 45 days after planting. For anthracnose control, tank-mix with 10 mL of Dynasty 100FS per 100 kg seed.

 

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. For anthracnose control, tank-mix with 10 mL of Dynasty 100FS per 100 kg of seed.

 

Active ingredient	trifloxystrobin
Trade name	Trilex
Rate (product)	21 mL per 100 kg seed
Comments	For use in commercial seed treatment facilities only. Apply using standard commercial seed treatment equipment. Not for use in hopper-box, planter-box, slurry-box or similar seed treatment applications. Uniform application on seed is necessary to ensure seed safety and best disease protection.

 

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Related Links...

• Agronomy Guide for Field Crops - Publication 811
• Diseases
• Dry Edible Beans