Author: James Lindow Clayton

Publisher: Forgotten Books

Published: 2018-09-09

Total Pages: 22

ISBN-13: 9781390471885

Excerpt from A Comparison of the Nutrient Content of Rocky Mountain Douglas-Fir and Ponderosa Pine Trees Data on the content of nitrogen, phosphorus, sulfur, sodium, potassium, calcium, and magnesium in Douglas - fir and ponderosa pine trees are presented for the Silver Creek Study Area, in the southwestern Idaho batholith. Suppressed, intermediate, and dominant trees of each species were cut and sampled from two habitat types in the study area. Needles (stratified by age), bark, heartwood, and sapwood (stratified by bole size), and branches (stratified by branch size), were analyzed for the elements of interest. No significant differences in chemical content between habitat types were detected for either species. Interspecific differences in chemical concentration were found in one or more elements for each plant part. Trends in elemental concentration over needle age, bole size, and branch size were also suggested by the data. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.