"This USDA website will not be updated during a lapse in federal funding. Content on this website will not be current or maintained until funding issues have been resolved. However, if there is information that affects security, life, and property, this website will continue to update that information during a funding lapse."

Home Publications Tree Planters' Notes Tree Planters' Notes, Issue 73 (1965) Stand, Growth, and Nitrigen Content of Red Pine Seedlings

Stand, Growth, and Nitrigen Content of Red Pine Seedlings

D-D mixture, methyl bromide, Nemagon, and Vapam were used to control nematodes and fungi--the possible causes of pre- and postemergence losses of red pine in a West Virginia nursery. Their effects on growth and nitrogen content of the seedlings also were determined. Methyl bromide was the most effective material for improving seedling stands . the first year, Vapam was partially effective, and the other materials were ineffective. After the first year, none of the treatments resulted in a significantly greater seedling top growth than what occurred in the control. Only seedlings from the methyl bromide treatment showed a significantly greater root length. At the beginning of the third growing season, seedlings in the methyl bromide and control plots had the best top growth. There were no significant differences in the nitrogen content of the seedling tops from any of the treatments the first year. Only the roots from the methyl bromide treatment had a significant increase in nitrogen content. At the beginning of the third growing season, the tops of seedlings from the methyl bromide plots contained less nitrogen than did seedlings from the other plots.


Download this file:

PDF document Download this file — PDF document, 110Kb

Details

Author(s): Jack R. Sutherland, R. E. Adams

Publication: Tree Planters' Notes - Issue 73 (1965)

Personal tools