Physiological Grading of Ponderosa Pine Nursery Stock
A system for grading seedlings based on their expected root growth following planting is described. This system is not expensive to install and operate, and will enable the nurseryman to predict seedling root growth for specific planting dates. Properly used, it can eliminate expensive planting failures caused by the use of seedlings whose expected seasonal root growth is not programmed for the planting site environment.
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Document Type: Journal Article
Affiliations: Plant Physiologist, Pacific Southwest Forest and Range Exp. Sta., U.S. Forest Serv., Berkeley
Publication date: 1971-01-01
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