Research Triangle Park, North Carolina, USA
June 30, 2011

Source: Bayer CropScience LP

If you are in an area where the risk is low to moderate the following items can increase your likelihood of having white mold outbreaks.

• Early planting increases risk of white mold
• High seeding rate and/or narrow row spacing increases risk
  • Earlier canopy closure
  • Decreased air flow, trapping humidity
  • Slows drying of soil surface
• Temperatures
  • Optimum for growth – below 85 degrees
  • Above 85 degrees – fungal growth slows, eventually stopping
  • Ambient temperature under the canopy at the soil surface may be much lower than above the canopy
• No-till
  • Disease severity is frequently lower in no-till fields
  • Sclerotia left on the surface produce fewer spores
• Soil moisture
  • Moist conditions are best, up to saturation
  • Persistent dry conditions will slow and stop fungal growth
• Humidity
  • High humidity promotes symptom development
• Soybean stage
  • Initial infections often occur near the R1 growth stage
  • Subsequent infection events may occur throughout the season, weather dependent

Proline is an important tool for managing white mold in soybeans, while promoting healthy crop development and yield improvement versus untreated crops.

Application parameters for white mold activity:

• Apply preventatively at R1 (flowering) growth stage
• Use rate – 3 fl oz/A
• May apply a sequential application at R3 (max. 3 applications per season)
• Apply by ground in 10 GPA or by air in 5 GPA
• 2 hour rainfastness
• 21 day pre-harvest interval

Always read and follow label instructions.
Bayer, the Bayer Cross and Proline are registered trademarks of Bayer.
Proline is not registered in all states.
For additional product information call toll-free 1-866-99-BAYER (1-866-992-2937) or visit our web site at www.BayerCropScienceUS.com.

Website: http://www.bayercropscience.com

Published: June 30, 2011