Name: Comparative Effects of Urea Fertilizer and Red Alder in a Site III, Coast Douglas-Fir Plantation in the Washington Cascade Range (en Inglés)
Price: 71797.00 COP
Availability: InStock
Author: United States Department of Agriculture
ISBN: 9781508796084

portada Comparative Effects of Urea Fertilizer and Red Alder in a Site III, Coast Douglas-Fir Plantation in the Washington Cascade Range (en Inglés)

Comparative Effects of Urea Fertilizer and Red Alder in a Site III, Coast Douglas-Fir Plantation in the Washington Cascade Range (en Inglés)

Formato

Libro Físico

Editorial

Createspace

Autor

United States Department of Agriculture

Idioma

Inglés

N° páginas

Encuadernación

Tapa Blanda

Dimensiones

28.0 x 21.6 x 0.2 cm

Peso

0.11 kg.

ISBN13

9781508796084

Categorías

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Comparative Effects of Urea Fertilizer and Red Alder in a Site III, Coast Douglas-Fir Plantation in the Washington Cascade Range (en Inglés)

United States Department Of Agriculture (Autor) · Createspace · Tapa Blanda

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Reseña del libro "Comparative Effects of Urea Fertilizer and Red Alder in a Site III, Coast Douglas-Fir Plantation in the Washington Cascade Range (en Inglés)"

Five randomly assigned treatments were used to quantify effects of adding varying numbers of red alder (Alnus rubra Bong.) or nitrogen (N) fertilization on growth of a 10-year-old conifer plantation at a medium-quality site in the western Washington Cascade Range. Zero, 20, 40, and 80 alder trees per acre were retained along with about 300 conifers per acre. Nearly all conifers were coast Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco). A fifth treatment substituted N fertilizer for N-fixing alder. Changes in average tree height, and in numbers of trees, basal area, and volume per acre between plantation ages of 10 and 27 are compared. In pure conifer plots, gross volume growth averaged 26 percent greater on fertilized than nonfertilized plots, indicating measurable benefits of additional N.