The effect of varying levels of potassium on the frost resistance of birch seedlings.
Seven hundred one-year-old Roth seedlings were given different concentrations of potassium fertilizer. Over the study period seedlings were subjected to artificial growing and dormant phases. Frost resistance of the seedlings was assessed by artificial freezing tests and electrical imped...
Main Author: | Jozefek, Helen |
---|---|
Format: | Article |
Language: | English |
Published: |
Finnish Society of Forest Science
1989-01-01
|
Series: | Silva Fennica |
Online Access: | https://www.silvafennica.fi/article/5369 |
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