Issue link: https://read.dmtmag.com/i/635697
www.goodfruit.com Diseases 6 Fire blight central Research plot in Washington has become a test bed for studying bacterial disease. 8 Fire blight management Mixing materials may bring growers closer to a method to mitigate losses from fire blight. 10 A closer look at rots WSU pathologist is studying how to prevent spread of disease from Manchurian crab apple trees. 18 Which trees to pull Little cherry disease researchers explain why some trees with no symptoms should still be removed. 19 Controlling challenges Differing life cycles pose problems in controlling little cherry virus 2 vectors. 26 Pruning cankers Winter pruning of cankers can help to reduce bacterial spot in peaches and nectarines. Grape Diseases 14 Northwest trunk diseases As Northwest vineyards age, trunk diseases become more of a concern. 17 Pathogen concerns Oregon investigates finding of bacterium that causes Pierce's disease in wine grapevines. Centerpiece 20 Don Gibson's drive Silver Pear Award honoree leads from the road as president of Mt. Adams Orchard Corp. The essential resource for growers PHOTO BY ROSS COURTNEY/GOOD FRUIT GROWER Don Gibson fields a phone call while inspecting operations at a pear packing facility in Bingen, Washington. Examples of postharvest rot, above, and sunburn, below, on Red Delicious apples. Postharvest diseases caused by Phacidiopycnis washingtonensis and Sphaeropsis pyriputrescens can look similar to sunburn on the surface after a few months in RA storage. Find out more in "Getting to the rot of the problem," beginning on page 10. PHOTO BY TJ MULLINAX/GOOD FRUIT GROWER www.goodfruit.com Good Fruit Grower FEBRUARY 15, 2016 3