Castagnoli, S., Riedl, H., Spotts, 1., Long, 1., Shearer, P., Pscheidt, J., Olsen, J., Hirnyck, R., Peachey, R., & State University. Extension Service, O. (2012). 2012 pest management guide for tree fruits in the Mid-Columbia area : Hood River, The Dalles, White Salmon. : Corvallis, Or. : Extension Service, Oregon State University.