Scleroderris Canker of Conifers : Proceedings of an International Symposium on Scleroderris Canker of Conifers, Held in Syracuse, USA, June 21–24, 1983

The "International Symposium on Scleroderris Canker of Conifers" held June 21-24, 1983 in Syracuse, New York was the result of mutual interest expressed by the USDA Forest Service, the Canadian Forestry Service, and the State Uni­ versity of New York College of Environmental Science and Forestry (SUNY ESF). The Symposium was an official function of the working party canker diseases (Scleroderris), Subject group S.2.06.02 Division II IUFRO. We wish to express our thanks to the USDA Forest Service, Research and the Canadian Forestry Service for financial support of the program, and SUNY ESF for hosting the Symposium. A major research program was launched in 1977 to study the biology of the European strain as found in North America. Support for this research resulted from spec i a 1 fund ing by the Congress of the United States to the USDA Forest Service, North Central Forest Experiment Station. Most of these funds were released as cooperative research grants to universities in the Lake States and the northeast. Many of the research papers delivered at this Symposium are the direct result of these research grants. While the Symposium deliberately emphasized the North American experience 'with Gremmeniella abietina in order to provide a focus for the meeting, we were anxious that this Symposium would also include studies from other countries. Front Matter....Pages i-xiii Welcome Address on Behalf of the Usda Forest Service....Pages 1-2 Welcome to the Symposium from the Canadian Forestry Service....Pages 3-4 History of Scleroderris Canker in Canada....Pages 5-7 Scleroderris Canker, Gremmeniella abietina ( Lagerb .) Morelet, in Canada -- an Overview....Pages 8-10 Scleroderris Canker in the Province of Ontario, Canada....Pages 11-15 Scleroderris Canker in the Province of Quebec, Canada....Pages 16-20 Scleroderris Canker in the Maritime Provinces of Canada....Pages 21-24 Scleroderris Canker in Newfoundland....Pages 25-25 Historical and Current Scleroderris Situations in the United States....Pages 26-31 Brunchorstia Dieback in Europe....Pages 32-41 Differences in Disease Syndrome with Pathogen Race and with Host and Environment....Pages 42-46 Pathogenicity and Host Range of Races of Gremmeniella abietina in Hokkaido....Pages 47-53 Metabolites of Gremmeniella abietina ....Pages 54-58 Genetic Variation in Gremmeniella abietina ....Pages 59-67 The Use of Polyacrylamide Gel Electrophoresis for Rapid Differentiation of Gremmeniella abietina Isolates....Pages 68-76 Dispersal of Conidia of Gremmeniella abietina Related to Weather....Pages 77-81 Inoculum Potential of Gremmeniella abietina in New York....Pages 82-95 The Infection Process in Pines By Gremmeniella abietina ....Pages 96-103 Effect of Environmental Factors on the Post-Infection Behavior of Gremmeniella abietina ....Pages 104-110 Gremmeniella abietina in Norway Spruce, Latent Infection, Sudden Outbreaks, Acid Rain, Predisposition....Pages 111-113 The Role of Insects in the Dynamics of Scleroderris Canker in New york....Pages 114-121 Effects of Sulfur Dioxide on Infection of Red Pine by Gremmeniella abietina ....Pages 122-129 Evaluation of Possible Effects of Acid Rain on Scleroderris Canker of Red Pine in New York....Pages 130-141 Five-Year Survey of Scleroderris Canker in Young Red Pine Plantations....Pages 142-147 Factors Affecting the Development of Disease Epidemics by Gremmeniella abietina ....Pages 148-152 The Movement of Gremmeniella abietina from the Alps to the Appenines....Pages 153-157 Experiences with Scleroderris Canker on Pinus cembra L. In Afforestations of High Altitude....Pages 158-161 Disease Increase Rates for Scleroderris Canker in Lewis County, New York....Pages 162-165 Pruning as a Silvicultural Tool in the Management of Pinus resinosa Infected with Gremmeniella Abietina ....Pages 166-176 The Growth of Trees Affected by Gremmeniella abietina ....Pages 177-180 Physiological and Biochemical Factors in Austrian Pine Clones with Different Susceptibility to Gremmeniella abietina ....Pages 181-188 Screening Conifers for Resistance to Gremmeniella abietina ....Pages 189-196 Response in Canada of Jack Pine Provenances to Gremmeniella abietina ....Pages 197-206 Resistance of Lodgepole Pine to Scleroderris Canker in Northern Sweden....Pages 207-211 Testing Fungicides for Control of Gremmeniella abietina in New York....Pages 212-216 Interactions between Epiphytic Bacteria and Conidia of Gremmeniella abietina ....Pages 217-225 Scleroderris Canker Survey Using Aerial Photography....Pages 226-235 Disease Management of Scleroderris Canker By Regulatory Action....Pages 236-242 The Use of a Quarantine to Control Scleroderris Canker in New York....Pages 243-247 The Transfer of Scleroderris Technology in Canada....Pages 248-256 Technology Transfer of Scleroderris Research Results....Pages 257-260 Overview and Summary of the Scleroderris Canker Symposium and Future Research Needs....Pages 261-269 Back Matter....Pages 270-273