Golfdom, September 2012
www turfgrasstrends com September 2012 TurfGrass Trends 37 excellent snow mold protection but may not be practical for most facilities or larger areas such as fairways PCNB is a popular product because it provides a reasonable level of control at an affordable price Trinity and Torque will both provide a reasonable level of snow mold control 0 to 20 percent disease allowed at costs that most facilities can afford If greater levels of control are desired and can be afforded mixing in products such as Daconil 26 36 and Insignia will improve disease suppression A final consideration about snow mold fungicides is how soil temperatures affect their residual efficacy Once soil temperatures consistently eclipse 32 degrees F fungicides applied prior to snow cover quickly degrade Continued on page 38 FIGURE 3A FIGURE 3B The pink snow mold pathogen does not require snow cover to develop and can be an extreme problem LEFT Figure 2A Gray snow mold patches range in size from two inches to three feet Figure 2B 2C Examining affected foliage for reddish brown or dark wrinkled sclerotia is a good way to identify gray snow mold 2D Speckled snow mold has much smaller sclerotia than gray snow mold which never have a red color and give the remaining mycelium a peppered look
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