. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. 12 BULLETIN 1186, U. S. DEPARTMENT OF AGRICULTURE. One small 28-year-old experimental plantation at Jelsa had 100 per cent of the trees attacked by the blister rust and 6 per cent already destroyed. None of the remaining trees will make merchantable Fig. 3.—A white-pine tree growing near black currants at Bagley Wood, near Oxford, England. This tree illustrates the typical appearance of white pines in a 12-year-old plantation in which 95 per cent of the trees are attacked by
. [Bulletins on forest pathology : from Bulletin , Washington, , 1913-1925]. Trees; Plant diseases. 12 BULLETIN 1186, U. S. DEPARTMENT OF AGRICULTURE. One small 28-year-old experimental plantation at Jelsa had 100 per cent of the trees attacked by the blister rust and 6 per cent already destroyed. None of the remaining trees will make merchantable Fig. 3.—A white-pine tree growing near black currants at Bagley Wood, near Oxford, England. This tree illustrates the typical appearance of white pines in a 12-year-old plantation in which 95 per cent of the trees are attacked by blister rust. Each limb shown here, as well as the trunk, is diseased. DENMARK. The white-pine blister rust has been known on the island of Born- holm, Denmark, since 1890, when Eostrup collected the first infected twig at Since that date the disease has become preva- 10 Pathological collection, Royal Agricultural College, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Dept. of Agriculture. [Washington : U. S. Dept. of Agriculture]
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