%0 Journal Article %T Incidencia de In¨®culo y Variables Clim¨¢ticas como Herramientas en la Toma de Decisiones del Manejo del Tiz¨®n de Fuego [Erwinia amylovora (Burill) Winslow et al.] Durante la Floraci¨®n del Manzano [Malus sylvestris (L.) Mill. var. domestica (Borkh.) Mansf.] %A Ram¨ªrez-Legarreta %A Manuel Rafael %A Jacobo-Cu¨¦llar %A Juan Luis %A ¨¢vila-Marioni %A Mario Ren¨¦ %A Parra-Quezada %A Rafael ¨¢ngel %A Zacatenco-Gonz¨¢lez %A Mar¨ªa Guadalupe %A Romo-Chac¨®n %A Alejandro %J Revista mexicana de fitopatolog¨ªa %D 2009 %I Scientific Electronic Library Online %X the presence of erwinia amylovora (ea) was determined in 2006 and 2007 in 180 samplings of flowers chosen at random in cuauht¨¦moc, 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 in both 2006 and 2007, ea was detected in 90% of the samplings, determining that ea management based on bacteria presence, derived in unnecessary antibiotic application, thus. the ea presence was detected in 2008 on 100% of the orchards and samplings performed in canatl¨¢n, durango, mexico. the decision concerning antibiotics application was made upon climate variables, obtaining similar damage levels to the levels registered in chihuahua, mexico. consequently, it was confirmed that the ea presence was consistent in apple production systems on the northern and central region of mexico, which epidemics rely more on climatic conditions and handling provided by the producer than on the inoculums availability. %K sprays %K antibiotics %K prediction. %U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S0185-33092009000200005&lng=en&nrm=iso&tlng=en