Preliminary Investigations On Dry Cold Storage Of Southern Pine Seed No78

Author : Mary L. Nelson
Publisher : Forgotten Books
ISBN 13 : 9780366820405
Total Pages : 26 pages
Book Rating : 4.8/5 (24 download)

DOWNLOAD NOW!

Download or read book Preliminary Investigations on Dry, Cold Storage of Southern Pine Seed (Classic Reprint) written by Mary L. Nelson and published by Forgotten Books. This book was released on 2018-09-19 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Preliminary Investigations on Dry, Cold Storage of Southern Pine Seed Early attempts at the Southern Forest Experiment Station to store south ern pine seed made use of a variety of containers, such as sealed glass jars, paper bags, and even sealed wax - paper bags. Some seed lots were disinfected with formaldehyde, other lots were untreated. No record was made of the moisture content of the seed at time of storing, nor was the germination per centage (measure of initial seed quality) always determined for the fresh seed. Temperatures during the storage period were disregarded. A concise, quantita tive summary of experiments during this early period cannot be made, but the nature of the results is readily apparent when the data are grouped loosely by species and by treatment previous to storage. The results were highly erratic and generally unsatisfactory (see table The viability of longleaf seed was usually greatly reduced within a year. For instance, the germination per centage of a longleaf seed lot dropped in 1 year from an initial value of 49 percent to 14 percent when stored, without disinfection, in sealed glass; yet the following season, the germination percentage of a lot under comparable storage conditions with 77 percent initial germination dropped in 1 year to percent. On the other hand, longleaf seed from the 1925 crop, with a ger mination of 75 percent when fresh, when stored in sealed glass after treatment with formaldehyde kept remarkably well for 1 year (germination percent) and moderately well for 2 years more percent and percent germina tion after 2 and 3 years, respectively). Since the longleaf seed were usually dried by air currents from an electric fan after treatment with formaldehyde, it was thought that this thorough drying might have been the factor responsible for the good preservation of these seed lots. This led to measurements of seed moisture content before storage, and in 1935 a cautious surmise was expressed that moisture content was important in the storage of longleaf pine seed. 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.