. Pruning of ponderosa pine : effect on growth. Ponderosa pine Pruning; Ponderosa pine Growth. Table annual diameter increment after pruning of ponderosa pine trees, by pruning treatment and growth periods Proportion of live-crown 1941-46 1946-51 1951-57 1941-57 length removed Inches 0 1/4 . 225 .177 .171 .190 1/2 .180 .159 .163 .167 3/4 .088 .102 .142 .112 125 _. 0 1/4 1/2 3/4 PROPORTION OF LIVE CROWN LENGTH REMOVED Figure length directly after pruning and 16 years later. 4. Please note that these images are extracted from scanned page images
. Pruning of ponderosa pine : effect on growth. Ponderosa pine Pruning; Ponderosa pine Growth. Table annual diameter increment after pruning of ponderosa pine trees, by pruning treatment and growth periods Proportion of live-crown 1941-46 1946-51 1951-57 1941-57 length removed Inches 0 1/4 . 225 .177 .171 .190 1/2 .180 .159 .163 .167 3/4 .088 .102 .142 .112 125 _. 0 1/4 1/2 3/4 PROPORTION OF LIVE CROWN LENGTH REMOVED Figure length directly after pruning and 16 years later. 4. 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, bookcollectionameri, bookcollectionbiodiversity
