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WWW.POTATOGROWER.COM 35 Lockwood of Idaho COMMITTED TO YOUR SUCCESS! See our complete new and used inventory at: www.lockwoodmfg.com Rexburg 208-681-4201 Paul 208-438-2171 Blackfoot 208-785-3054 Give us a call to learn how our harvesters, 4-row and 6-row windrowers and VACS can improve your operation. Also ask about our Air Cup, Pick and Belted Cup planters. Visit our new store location: 1601 W. Bridge Street, Blackfoot, Idaho Proven and Reliable 163295LocIda13s.indd 1 11/1/16 2:54 PM • Non-residual chemistry • Zero hour REI • No buffer zones • No buffer zones NEW! from BioSafe THE ALTERNATIVE TO FUMIGANTS IS HERE TerraStart is a microbicide soil treatment for the control of soil-borne pathogens in field grown crops. 1.888.273.3088 | biosafesystems.com Scan to learn more 163599BioSaf13s.indd 1 2/13/17 10:41 AM rot decay between varieties, as seen in the table below. F. sambucinum is considered the pathogen that most commonly causes dry rot development in stored potatoes. Identifying and growing varieties that are less susceptible to dry rot development may provide a management strategy to begin the storage season. Unfortunately, you may not always have the market option to select less susceptible varieties. However, having awareness of the potential for dry rot development will help modify management strategies to lessen the impact of dry rot. Fusarium seed piece decay can be caused by both Fusarium coeruleum and F. sambucinum, with F. coeruleum being more aggressive—especially after planting, thus reducing stand. Seed treatments containing mancozeb are highly effective against both Fusarium seed piece decay fungi. Additionally, seed treatments containing fludioxonil (e.g., Maxim MZ, Maxim 4FS, Spirato, CruiserMaxx Potato formulations), difenoconazole (CruiserMaxx Potato Extreme) or prothioconazole (Emesto Silver) are also effective against Fusarium dry rot pathogens. Liquid seed treatments can provide more effective coverage of the cut surface if applied properly. Treating seed with effective fungicides is even more critical when seed is pre-cut and stored prior to planting. This practice gives the dry rot fungi a head start on decay if not properly carried out. Many seed treatments mentioned above are also effective against Rhizoctonia canker and black scurf. Combining liquid seed treatments with a mancozeb dust is highly effective for Fusarium seed piece decay management. However, the use of dust is problematic from a worker safety standpoint. The level of Fusarium seed piece decay in a seed lot prior to cutting can be predictive of the amount of Fusarium dry rot that a grower may experience in a field. Selecting seed lots with lower levels of Fusarium dry rot in storage, encouraging conditions favorable for wound healing, and treating seed with an effective fungicide will help ensure Fusarium seed piece decay does not develop in the field, which will in turn reduce the threat of dry rot in storage.