. Ponderosa pine saplings respond to control of spacing and understory vegetation. Ponderosa pine; Ponderosa pine Spacing. 50 DC o —I < z z < 40 30 20 - 10 _. Vegetation left CD Vegetation removed ° 1,000 — 500 -~ 250 125 62. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Barrett, James W. (James Willis), 1922-. Portland, Or. : Pacific Northwest Forest and Range Experiment Station, U. S. Dept. of Agriculture

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Keywords: ., bookcentury1900, bookcollectionbiodive, booksubjectponderosapine