Provenance has the great effect on the production of tree and in its quality. The provenance trial has been the major aspects of forest research since long time. It has the history of hundreds year in developed countries like Germany and the USA but in developing countries like Nepal, it has been the new development however the realization of its importance has begun.
| Attachment | Size |
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| Importance of provenance trial of Douglas fir.pdf | 1.28 MB |
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