@article {Lederer89, author = {Robert F. Lederer}, title = {Green Survival: Taking The Story To America}, volume = {4}, number = {4}, pages = {89--92}, year = {1978}, doi = {10.48044/jauf.1978.021}, publisher = {Arboriculture \& Urban Forestry (AUF)}, abstract = {Thompson, S.V. et al. 1977. Pesticide applications can be reduced by forecasting the occurrence of fireblight bacteria. California Agriculture 31 (10): 12-14.Fireblight, caused by the bacterium Erwinia amylovora, is an erratic and devastating disease. Blight {\textquotedblleft}strikes{\textquotedblright} have been continuously and carefully pruned from diseased trees since fireblight first arrived in California. Chemical spray treatments, first used to control the disease in the 1940{\textquoteright}s, have been relied upon heavily, especially in the critical flowering period. Until recently, it has been common practice to spray or dust trees with copper or antibiotic materials at 5-day intervals throughout the flowering period. It became apparent that spray applications were frequently unnecessary. Lack of data on the occurrence of the bacteria prohibited the development of a usable forecasting system. In the late 1960{\textquoteright}s we began developing a selective, differential growth medium for the isolation of fireblight bacteria. This medium has been a key element in the development of a monitoring program that allowed us to correlate the occurrence of fireblight bacteria with weather.}, issn = {1935-5297}, URL = {https://auf.isa-arbor.com/content/4/4/89}, eprint = {https://auf.isa-arbor.com/content/4/4/89.full.pdf}, journal = {Arboriculture \& Urban Forestry (AUF)} }