Ponderosa and Lodgepole Pine Seedling Bud Burst Varies with Lift Date and Cultural Practices in Idaho Nursery (Classic Reprint)

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Excerpt from Ponderosa and Lodgepole Pine Seedling Bud Burst Varies With Lift Date and Cultural Practices in Idaho NurserySpringtime warming allows for trees to break dormancy and begin growth. Figure 4 also shows the cumulative high temperatures before the two spring lifts. This summary of temperatures does not tell us what the requirements are for bud burst. It does show us the temperatures that have made the lodgepole pine seedling tops ready to grow immediately upon exposure to favorable conditions, on March 18. By April 8 they were beginning to grow ih-the nursery bed.We did not lift any trees between November 26 and March 18 because of frozen soil. When the frost finally left the ground in mid-march, the lodgepole seedlings broke bud very quickly in the greenhouse. Within 15 days nearly 100 percent of the trees broke bud, while in late November it took 45 days to achieve the same amount of bud burst.Three weeks later the seedlings were so close to breaking bud in the nursery bed that 14 percent did break bud in the time period between lifting and when they were placed in the greenhouse. This indicates that the lodgepole seedlings were coming out of dormancy before the spring lifts.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.