Search Results - "Wittwer, R.F"

Long-term growth and ecophysiological responses of a southeastern Oklahoma loblolly pine plantation to early rotation thinning by Hennessey, T.C., Dougherty, P.M., Lynch, T.B., Wittwer, R.F., Lorenzi, E.M.

“…A thinning levels study was initiated in a 9-year-old loblolly pine ( Pinus taeda L.) plantation containing 26.6 m 2 ha −1 basal area during the spring of 1984…”
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Effects of stand development and weather on monthly leaf biomass dynamics of a loblolly pine ( Pinus taeda L.) stand by Dougherty, P.M., Hennessey, T.C., Zarnoch, S.J., Stenberg, P.T., Holeman, R.T., Wittwer, R.F.

“…Annual leaf biomass production, monthly needle accretion and monthly needlefall were measured in an 11-to 17-year-old thinned stand of loblolly pine. Initial…”
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Thinning improves growth of crop trees in natural shortleaf pine stands by Wittwer, R.F. (Oklahoma State University, Stillwater, OK.), Lynch, T.B, Huebschmann, M.M

“…Dense, previously unthinned, 24- to 28-yr-old natural shortleaf pine (Pinus echinata Mill.) stands in the Ouachita Mountains of eastern Oklahoma showed good…”
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Maximum Size-Density Relationship between Lorey's Mean Height and Trees per Hectare by Lynch, T.B, Wittwer, R.F, Stevenson, D.J, Huebschmann, M.M

“…A linear relationship between the logarithm of Lorey's mean height and the logarithm of number of trees per hectare at maximum density can be derived from well…”
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Productivity, crown architecture, and gas exchange of North Carolina and Oklahoma/Arkansas loblolly pine families growing on a droughty site in southeastern Oklahoma by Blazier, Michael A., Hennessey, Thomas C., Lynch, Thomas B., Wittwer, Robert F., Payton, Mark E.

“…Biomass production, crown architecture, leaf gas exchange, and specific gravity of North Carolina Coastal (NCC) and local Oklahoma/Arkansas (O/A) families of…”
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Effects of reproduction cutting method and hardwood retention on shortleaf pine seed production in natural stands of the Ouachita Mountains by Wittwer, R.F, Shelton, M.G, Guldin, J.M

“…Shortleaf pine (Pinus echinata Mill.) seed production was monitored for 4 yr in stands harvested by a range of even- and uneven-aged reproduction cutting…”
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Estimating seed quality and quality in shortleaf pine (Pinus echinata Mill.) cones from natural stands by Wittwer, R.F, Tauer, C.G, Huebschmann, M.M, Huang, Y

“…The quantity and quality of seeds were studied in 886 shortleaf pine cones collected from 48 trees in each of two 15-ha natural stands in western Arkansas,…”
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Segregation and linkage relationships of isoenzymes in shortleaf pine (Pinus echinata Mill.) by Raja, R.G, Tauer, C.G, Wittwer, R.F, Huang, Y

“…Segregation and linkage relationships were analyzed between 28 isoenzyme loci in ten natural stands representing much of the natural range of Pinus echinata…”
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Shortleaf pine seed production in natural stands in the Ouachita and Ozark Mountains by Shelton, M.G. (USDA, Forest Service, Monticello, AR.), Wittwer, R.F

“…Seed production of shortleaf pine (Pinus echinata Mill.) was monitored from 1965 to 1974 to determine the periodicity of seed crops in both woods-run stands…”
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Pattern of growth of sapwood, heartwood, and stem volume of open-grown eastern redcedar in grasslands by Alemayehu, D. (Oklahoma State University, Stillwater, OK.), Engle, D.M, Wittwer, R.F, Anderson, S

“…The relationship of sapwood width, heartwood width, and stem volume with tree age was studied in 141 open-grown eastern redcedar(Juniperus virginiana L.) trees…”
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Relationship between throughfall and stand density in a Pinus taeda plantation by Stogsdill, W.R. (Arkansas Univ., Monticello, AR (USA). Dept. of Forest Resources), Wittwer, R.F, Hennessey, T.C, Dougherty, P.M

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Nutrient uptake in fertilized plantations of American sycamore [Platanus occidentalis] by Wittwer, R.F, Immel, M.J, Ellingsworth, F.R

“…Annual applications of ammonium nitrate (169 kg/ha elemental N), alone and in combination with concentrated superphosphate (112 kg/ha elemental P), increased…”
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