Investigations of oak wilt and of maple blight: I. The effects of temperature and moisture on the development of oak wilt. II. The development of oak wilt in bur oak (Quercus macrocarpa Micheaux). III. The etiology of the maple blight disease of sugar maple (Acer saccharum Marshall)
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8-FOOT LEVEL A. J. Riker Abstr agar air temperatures American elm areas average bark Berbee blighted trees bole branches bud-group mortality buds bur oak carbohydrate dead trees defoliated saplings defoliation plots diameter dieback discoloration disease development disease incidence diseased trees Dutch elm disease early fall frosts effects of defoliation effects of temperature fagacearum Fergus Florence County foliage following defoliation following inoculation forest fungi Fusarium wilt growth healthy host inches dbh incitant incubation infection influenced inoculated seedlings inoculation periods insect defoliation internal temperatures isolates July leaf lings maple blight maple saplings mellea northern pin oak oak wilt fungus Parmeter pathogen Phytopathology pin oak logs quercina rainfall rhizomorphs root collar sapstream sapwood soil moisture soil temperatures spores stands studies sugar maple sunlight symptom development TEMP temperatures which occurred thermocouples tion tissue trees and saplings trees inoculated twig dieback twig mortality understory upper crown wilt symptoms Wisconsin