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Effects of Fertilization on Shoot Growth of Defoliated and Undefoliated Red Oak SeedlingsAuthor(s): Johnson Parker
Source: Res. Pap. NE-399. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 3p.
Publication Series: Research Paper (RP)
Station: Northeastern Research Station
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DescriptionFertilization of red oak (Quercus rubra L.) seedlings increased their terminal shoot growth. Dry, liquid, and liquid + dry fertilizer was applied to groups of undefoliated, once-defoliated, and twice-defoliated seedlings. Terminal shoot growth was measured after the first and second growing season and compared to that of a similar group of unfertilized seedlings. On the average, defoliated seedlings treated with dry or liquid + dry fertilizer grew more than unfertilized, undefoliated seedlings. The foliage color of twice-defoliated seedlings was not influenced by fertilization, but a difference in leaf color between unfertilized and some of the fertilized seedlings was observed. The liquid + dry fertilizer stimulated growth more than the other fertilization treatments.
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CitationParker, Johnson. 1978. Effects of Fertilization on Shoot Growth of Defoliated and Undefoliated Red Oak Seedlings. Res. Pap. NE-399. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 3p.
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