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Response of Yellow‐Poplar and Red Oak to Fertilization in West Virginia
Author(s) -
Auchmoody L. R.,
Smith H. Clay
Publication year - 1977
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1977.03615995004100040040x
Subject(s) - human fertilization , basal area , botany , horticulture , biology , zoology , fagaceae , agronomy , ecology
Fertilization tests with small sawlog‐size yellow‐poplar ( Liriodendron tulipifera L.) and red oak ( Quercus rubra L.) were begun in the northern mountain section of West Virginia in the spring of 1970. Treatments were made with N, P, N‐P, and N‐P‐K. During the first year, N was broadcast at 336 kg/ha, P at 97 kg/ha, and K at 93 kg/ha. Second season application included 112 kg/ha of N and 97 kg/ha of P. Basal‐area response to N over a 3‐year period amounted to a 47% increase for yellow‐poplar and a 29% increase for red oak. There was no response to P, either alone or in combination with N. Negative effects on basal‐area growth were observed where KCl was applied. Foliar response in leaf weight and color was attributed mostly to N, although P in combination with N produced slightly heavier and darker green leaves than N only. Foliar N in yellow‐poplar corresponding to the best basal‐area growth was about 3.0% N.