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WWW.POTATOGROWER.COM 25 THE BEST PRODUCTS • THE BEST SERVICE • THE BEST PRICE 208-356-4317 • WWW.MAUPINAG.COM 1217 S. RAILROAD AVE • SUGAR CITY, ID 83448 Celebrating 39 Years! SINCE 1982 A U T H O R I Z E D D E A L E R F O R ® Liquid Handling Products BANJO PARTS ROLLERS ROLLER CHAIN SPROCKETS BELTED CHAIN HYDRAULIC PARTS METAL SHAFTS HYDRAULIC MOTORS GEAR BOXES/ELECTRIC MOTORS BEARINGS BELTED CHAIN SPROCKETS 4085-7MaupinWelding12v.indd 1 4085-7MaupinWelding12v.indd 1 1/4/21 4:45 PM 1/4/21 4:45 PM VANGUARD MONITORING SYSTEMS MONITOR STARTER FERTILIZER FLOW AND BLOCKAGE VANGUARD MONITORING MONITOR STARTER FERTILIZER CALL OR VISIT US ONLINE! NE 308.381.2905 IA 515.289.2746 IN 765.533.4809 AGEXPRESS.COM 4083-2AgExpressElectronics16h.indd 1 4083-2AgExpressElectronics16h.indd 1 10/15/20 10:43 AM 10/15/20 10:43 AM not spread in storage. However, disease severity will increase in infected tubers in storage if conditions are favorable. Black dot-infected tubers going into storage may look completely disease-free. However, under favorable conditions, fungal mycelia will grow out from microsclerotia and colonize the potato surface, causing raised lesions after two to three months in storage. This can lead to the impression that infection and disease occurred in storage. Managing temperature and humidity in storage can delay or prevent the onset of black dot blemish development. Considerable silver scurf infection can occur in storage, sometimes affecting all the tubers in a storage. How much disease develops depends on the number of infected tubers going into storage, environmental conditions in storage, and how long tubers are stored. As with black dot, cooler temperatures, lower humidity and adequate ventilation help reduce development of silver scurf in storage. Modifying the storage environment will not eliminate silver scurf development, but will reduce the production of spores and secondary infection of healthy tubers. If long-term storage is planned, the storage should not be opened to pack and ship a portion of the lot and then re-closed. Major losses have occurred in such situations, due to the dislodging of spores by the use of equipment and pressure differences when the storage is opened, with the air system then spreading the pathogen spores throughout the pile. In summary, if you start to notice increasing levels of blemish diseases on your stored potatoes, it is important to determine whether you have silver scurf or black dot infection. Silver scurf can lead to further disease due to secondary infection in storage. Black dot will not lead to further infection of healthy tubers, but additional symptoms may appear on already infected tubers. In either case, it is probably best to pack and ship tubers for the fresh market as soon as possible. If long-term storage was planned, do not open the storage facility, and keep temperatures at the lower range of optimum based on the end use of the potatoes to inhibit disease development.