Effects of Fertilization on Shoot Growth of Defoliated and Undefoliated Red Oak Seedlings

Johnson Parker

Treesearch

Effects of Fertilization on Shoot Growth of Defoliated and Undefoliated Red Oak Seedlings

Informally Refereed

Authors:

Johnson Parker

Year:

1978

Type:

Research Paper

Station:

Northern Research Station

Source:

Res. Pap. NE-399. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 3p.

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Download (PDF 369 KB): https://research.fs.usda.gov/download/treesearch/14652.pdf

Abstract

Fertilization 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.

Citation

Parker, 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.