Seed Source, Seed Size, and Seedling Grade Relationships in South Florida Slash Pine
Differences in survival, growth, and pest resistance of planted South Florida slash pine (Pinus elliottii Engelm. var. densa Little and Dorman) from two sources, two seed sizes, and three seedling grades are reported. Seedlings from the northerly source had morphological characteristics more closely resembling typical slash pine than did those from the southerly source. Six years after outplanting, the northerly source, medium size seeds, and large seedling grade had survived best. The northerly source and large seedling grade grew fastest. Seedlings infected by the fungus Scirrhia acicola were smaller and had greater mortality than noninfected seedlings. These findings indicate the possibility of improvement in survival and early growth of planted South Florida slash pine by careful selection of seed source and seedling grade.
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Document Type: Journal Article
Affiliations: Silviculturist, Southeastern Forest Expt. Sta., Forest Service U.S. Dept. Agric., Asheville, N. C.
Publication date: 1966-02-01
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