Growth, Ectomycorrhizal Development, and Root Soluble Carbohydrates of Black Oak Seedlings Fertilized by Two Methods

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Abstract:

Pisolithus tinctorius inoculated and noninoculated Quercus velutina seedlings were grown in book planters and fertilized by two methods. Fertilizer mixtures composed of nitrogen-phosphorus-potassium (NPK) or nitrogen-magnesium (NMg) were applied as a mist to the foliage of seedlings or as a solution to their rooting medium. Seedling growth, ectomycorrhizal development, and soluble carbohydrate content of short roots were significantly affected by type of fertilizer and method of application. Fructose content of short roots of seedlings receiving foliar NPK was significantly greater than in seedlings which had NPK and NMg added to the rooting medium. Significantly more ectomycorrhizae were formed on seedlings receiving foliar applied NPK and NMg than those receiving the same fertilizers as a solution to their rooting medium. Fructose content of short roots was significantly correlated with ectomycorrhizal development and accounted for 89 percent of the variation in the susceptibility of short roots to infection by Pisolithus. These results suggest that it may be possible to avoid high concentrations of soil nutrients and to stimulate ectomycorrhizal development on Quercus seedlings by applying fertilizers directly to the foliage as a fine spray mist. Forest Sci. 27:617-624.

Keywords: Quercus velutina; foliar fertilization; pisolithus tinctorius; seedling nutrition

Document Type: Journal Article

Affiliations: Senior Research Technician, School of Medicine, University of Missouri, Columbia, Missouri 65211

Publication date: September 1, 1981

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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