Revista mexicana de fitopatología Print version ISSN 0185-3309
RAMIREZ-LEGARRETA, Manuel Rafael et al. Inoculum Incidence and
Climatic Variables as Tools to Make Decisions of Fire blight
[Erwinia amylovora (Burill) Winslow et al.] Management During
Apple Tree [Malus sylvestris (L.) Mill. var. domestica (Borkh.)
Mansf.] Bloom Period. Rev. mex. fitopatol [online]. 2009,
vol.27, n.2, pp. 123-133. ISSN 0185-3309. The presence of
Erwinia amylovora (Ea) was determined in 2006 and 2007 in 180
samplings of flowers chosen at random in Cuauhtémoc, Chihuahua,
Mexico from four 60 tree blocks, being each and every single one
of them chosen during cv. Golden Delicious apple tree flowering.
Each block represented a different decision to make, with
regards to the use of antibiotics: climate variables, Ea
presence in stigmas, climate + Ea variables in stigma and
witness. Results obtained from six cv. Golden Delicious orchards
located in Canatlan, Durango, Mexico, were validated in 2008. It
was indicated by these results that