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Forest Pathology in Relation to Plant Pathology
Proof of Pathogenicity
27 other sections not shown
air pollution areas Ascomycetes ascospores aspen associated bacteria bacterium bark Basidiomycetes basidiospores beech beetle blight blister rust branches brown rot cambium canker fungi caused cell wall cellulose Chapter chemical compliments of Dr conidia conifers crops decay fungi decline disease cycle Dutch elm disease enzymes factors ﬁber FIGURE ﬁnd ﬁre ﬁrst foliage diseases forest pathology fruit bodies fungicide fungus genetic growth hardwoods heart rot host hyphae identiﬁcation increase infection inﬂuence inoculation inoculum invasion leaf lignin maple mellea moisture mycoplasma mycorrhizae Nectria needle nematodes nitrogen nursery nutrients occur organisms parasitic pathogen pathologists perithecia phloem Photograph compliments Phytopathology plant plantations population problem produce recognize reduced resistance result Ribes root rot saprophytic Scleroderris canker seed seedlings signiﬁcant soil species speciﬁc spores stain stem surface symptoms teliospores temperature tion tissue TREE DISEASES USDA vessels virus viruses western white pine white pine wilt diseases wood decay wounds xylem