Potato Grower

April 2017

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DISEASE THREATS DISEASE CONTROL PROTECT POTATOES FROM EARLY BLIGHT AND WHITE MOLD. Growing high-quality potatoes requires ultimate balance and precision. Too much nitrogen late in the growing season reduces crop yields, but not enough early on suppresses tuber growth. The same irrigation practices that promote healthy canopy growth to support tuber bulking – and increase yield – cause moist conditions that can lead to serious fungal disease pressures in potatoes. EARLY BLIGHT Thrives in wet conditions and can lead to smaller potatoes, lower dry matter content and yield loss. WHITE MOLD Thrives in moist conditions and excessive irrigation. White mold causes a rapidly spreading, cottony white growth and might cause plant death. It also overwinters, potentially resulting in ongoing losses. CROP ROTATION The University of Idaho Extension recommends rotating crops grown in a particular fi eld to prevent diseases from overwintering. FUNGICIDES Can help eradicate both diseases and should be applied preventively or at the fi rst sign of Early blight symptoms. MONITORING Vigilant monitoring and management of Early blight and White mold is needed as potato crops get closer to maturity and harvest. ULTIMATE BALANCE TRIAL CONDUCTED BY MILLER RESEARCH, IDAHO COMMISSION. LUNA TRANQUILITY ® HELPS REDUCE EARLY BLIGHT SEVERITY BY 97% Luna Tranquility helps improve yield by 10% PROTECTION MEANS PROFIT 612 UNTREATED Yield (cwt./A) LUNA TRANQUILITY ® 11 oz. CHLOROTHALONIL 1.5 pt. MANCOZEB 2 lb. ENDURA ® 5.5 oz. 674 638 636 626 +$543 PER CWT./A 1 AN ADDITIONAL 10% IN YIELD MEANS TRIAL BY MILLER RESEARCH, IDAHO COMMISSION SHOWS: LEARN MORE AT LUNAFUNGICIDES.COM © 2017 Bayer CropScience LP, 2 TW Alexander Drive, Research Triangle Park, NC 27709. Always read and follow label instructions. Bayer, the Bayer Cross, Luna, and Luna Tranquility are registered trademarks of Bayer. Endura is a trademark of BASF. Not all products are registered for use in all states. For additional product information, call toll-free 1-866-99-BAYER (1-866-992-2937) or visit our website at www.CropScience.Bayer.us. 1 Average yield gain in dollars per cwt./acre is based on Potatoes 2015 Summary (September 2016); United States Department of Agriculture National Agricultural Statistics Service, page 18.

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