00000nam 2200000za 4500 9.846265 CaOODSP 20221107153147 cr ||||||||||| 180417q2009 onc |o f000 0 eng d CaOODSP eng n-cn--- H164-223/2009E-PDF Integrated management of late blight on potatoes [electronic resource]. [Ottawa] : Health Canada, [2009?] [7] p. Issued also in French under title: Lutte intégrée contre le mildiou de la pomme de terre. "Late blight has been a problem for potato growers in North America since the 1840s. The recent arrival of a new form of the late blight fungus, the "A2 mating type", is resulting in many new strains of the fungus. These new strains are sometimes more aggressive pathogens and some may have overcome genetic resistance in some potato cultivars or be resistant to some fungicides. For example, strains have been found in North America that differ in their response to the fungicide metalaxyl: some strains are sensitive and some strains are insensitive"--p. [1]. gccst Agri-food products gccst Crops Canada. Health Canada. Lutte intégrée contre le mildiou de la pomme de terre (CaOODSP)9.855370 PDF 59 KB https://publications.gc.ca/collections/collection_2018/sc-hc/H164-223-2009-eng.pdf