Nutritional aspects of the littleleaf disease of pine (1948)Roth, E. R., Toole, E. R., & Hepting, G. H. (1948). Nutritional aspects of the littleleaf disease of pine. Journal of Forestry, 46(8), 578-587. Retrieved from http://www.ingentaconnect.com/content/saf/jof/1948/00000046/00000008/art00007 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 http://www.ingentaconnect.com/content/saf/jof/1948/00000046/00000008/art00007
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