Diseases of forest and shade Diseases of forest and shade trees, ornamental and miscellaneous plants in the United States in 1921 diseasesofforest23mart Year: 1922 450 BEEOK ( atropurdcca) White h&artv/ood rot caused by ?orn'.._s (L.) ?r. Maine (STD) BIRCK (Eetula spp .) Cari<:er caused by Helanconium betulinuni c- Kze. Ohio - first appearance in state. (RUT) \.'hite streaked gapvjood r_ot causfcd ' by Pleurotus ostreatus Jacq. Maine (STD) Pig. 85- Geographical distribution of ash rust in the U. S. as reported to the Plant Disease Survey. Vhite heartv/ocd rot c
Diseases of forest and shade Diseases of forest and shade trees, ornamental and miscellaneous plants in the United States in 1921 diseasesofforest23mart Year: 1922 450 BEEOK ( atropurdcca) White h&artv/ood rot caused by ?orn'.._s (L.) ?r. Maine (STD) BIRCK (Eetula spp .) Cari<:er caused by Helanconium betulinuni c- Kze. Ohio - first appearance in state. (RUT) \.'hite streaked gapvjood r_ot causfcd ' by Pleurotus ostreatus Jacq. Maine (STD) Pig. 85- Geographical distribution of ash rust in the U. S. as reported to the Plant Disease Survey. Vhite heartv/ocd rot caused by pcriies igniarius (L.) Fr. Idaho - quite on occidentalis) 'â 'â 'ood rot caused by Pvcnoporus cinnabarinus Karst. = (Folystictus cinnabarinus] (Jacq.; Fv.) V/ashin'ton /itches broom - cause vinlcnown VJashire ton Drou-rht injury caused by extremely dry hot weather. Nev; York - a fev; trees v/ere injured or killed, especially v/here the birches v;ere planted in filled-in lav/ns. I BUCKEYE (Aesculus glabra) Leaf blotch caused by aesculi (?k.) Stev/art = (Phyllosticta paviae Desm., p. sphaeropsidea Ell. « Ev.) Ohio - period of greatest injury v.'as durin: July and August the host vvas in full leaf, cf considerable importance and becoming more prevalent, all species of Aesculus are apparently susceptible. Iov;a - averare amount of prevalence, trace of loss. BUCKTHORN (Rliamnus spp.) Rust caused by Puccinia coronata Gda. Connecticut (JLi>) New York - much more prevalent than in previous years. Illinois - especially prevalent in northern part of state,
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