Littleleaf disease of pine is a serious and widespread deterioration of unknown cause, affecting shortleaf and to a lesser degree loblolly pine. Diseased shortleaf pines show a marked deficiency of nitrogen and calcium in the foliage. A variety of fertilizers and other soil amendments have been tested for their effect in preventing or inducing some degree of recovery from littleleaf. The addition of large quantities of nitrate or ammoniacal fertilizers was generally effective in reducing the incidence of littleleaf among healthy trees, and inducing improvement among many trees already diseased. At the concentrations used, salts or combinations of salts of 14 other elements applied in various ways, and organic matter added as leaf mold, stable manure, and compost have had little or no beneficial effect. Littleleaf seems to be associated with failure of the trees to absorb sufficient nitrogen, even where soil nitrogen is present in amounts regarded as adequate for the development of normal shortleaf pine.
Document Type: Journal Article
Publication date: August 1, 1948
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The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.