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ABSTRACT
Fertilizer treatments were established in duplicate in a 75- to 80-year-old mixed stand of sugar maple (Acer saccharum Marsh.) and black cherry (Prunus serotina Ehrh.) on Cookport silt loam soil in a randomized-blocks-with-split-plot experimental design. The main unit treatments were control, N-only, P-only, NP, and NPK, and the subunit treatments were nonlime and lime. Foliage samples were obtained from 5 dominant-codominant trees of each species in each plot for 1 pretreatment year and 3 consecutive years following treatments. Regression analysis of foliar mean values from each treatment plot and year was used to determine if a statistically significant relationship existed for concentrations of N, P, K, Ca, Mg, Na, and Mn of the sample trees. The mutual prediction between black cherry and sugar maple foliage analysis data was statistically significant for several of the parameters investigated.
1 Contribution of the Department of Silviculture, State Univ. of New York, College of Environmental Science and Forestry, Syracuse, NY 13210. Presented before Div. S-7, Soil Sci. Soc. Am. Nov. 12, 1974, at Chicago, Illinois.
2 Professor of Forest Soil Science and Technical Research Assistant, respectively. The assistance of Dr. J. V. Berglund of SUNY and Mr. M. M. Armstrong of Armstrong Forest Division of Texas Gulf Sulphur Co., Johnsonburg, Pennsylvania is gratefully acknowledged.
Received for publication January 27, 1975. Accepted for publication June 27, 1975.
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