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Showing 1 to 20 of 65 for “"Stem Diameter"”.
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Methods for modeling whole stem diameter growth and taper
Stem profile models which allow for both taper and form changes (Gray 1956) were constructed and evaluated. Gray defined form to be the basic shape of the tree, e.g. cone or parabolid, and taper to be the rate of narrowing in diameter given a tree form. Ormerod's stem profile model was selected as …
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Effect of upper stem diameter and errors of measurement on the accuracy of volume equations
Measurements of DBH, upper diameters, merchantable height and total heights were made on 80 standing white oaks (<i>Quercus alba</i>) which were then felled for detailed measurements of the same parameters. The data obtained were used to evaluate the accuracy of standing tree measurements, to …
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Efficacy, uptake, and translocation of stem applied triclopyr ester in four formulation solvents
… solvent, vegetable oil, and kerosene following stem applications to red maple (Acer rubrum), white oak (Quercus alba), and Virginia pine (Pinus virginiana). Another objective was to explore correlations between efficacy and uptake and translocation. Additional objectives included examining the …
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Mapping the Distribution of Barrier Island Slash Pine Woodland and Determining Growth Responses of Pinus elliottii to Hurricane Katrina (2005) on Cat Island, Mississippi
… with mean radial growth rate (mm y ̄ ˡ), stem diameter (cm), and change in radial growth rate (% change) five years post Hurricane Katrina. The overarching hypothesis is that growth rate in <em>P. elliottii </em>on Cat Island, is a function of elevation. The two sub-hypotheses tested were …
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Response of marula to simulated browsing on a productivity gradient
… by showing a trend of increasing treee height, stem diameter, old shoot extension, number of new shoots, new shoot length, leaf biomass and foliar nitrogen along a productivity gradient. Conversely, marula saplings showed a trend of decreasing flavonoid content, condensed tannin concentration, …
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Canopy transpiration of beech forests in Northern Bavaria – Structure and function in pure and mixed stands with oak at colline and montane sites
… Assessed structural characteristics were stem diameter, tree height, stand density, basal area, sapwood area and leaf area index LAI. At the within-tree level the axial xylem sap flow density, Js, declined radially from outer to inner sapwood in beech. This decrease was stronger in small …
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Compatible taper and volume equations for yellow-poplar in West Virginia
… are an important component of most inventory systems for use in estimating upper stem diameter, form, and tree volume. Compatible taper and volume functions can be derived through the mathematical integration of taper functions. Non-linear regression techniques were employed to estimate the …
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Characterizing Low Nutrient Stress Resistance in Crop Sunflowers (Helianthus annus)
… assessed for stress resistance using height, stem diameter, biomass, and root structure traits. Sunflowers responded to nutrient stress through a decrease in overall size and increased root width near the surface and steeper lateral root angles. Height, stem diameter, biomass, root mass, root …
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Sensor development for estimation of biomass yield applied to Miscanthus Giganteus
… Therefore, a novel yield monitoring system was proposed. The approach taken was to employ an indirect measure by determining a volume of biomass entering the harvester as a function of time. The volume can be obtained by multiplying the diameter related cross-sectional area, the height …
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Pinching and Spacing Effects on Cut Sunflower (Helianthus annuus) Production in East Texas
… 1 showed non-pinched plants produced marketable stem lengths and flower sizes, while pinched plants’ stem length, stem diameter, flower diameter, and disk diameter decreased compared to the non-pinched plants. The objective for experiment 2 was to evaluate pinching and spacing treatments on ‘Pro …
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Componentes de produção do gergelim brs seda submetido a diferentes desbastes e espaçamentos
… components of production: Plant height (HPL), stem diameter (IDS), insertion height of the first fruit (FFI), number of fruits per plant (PFN), number of fruit branches (BFN), weight 1000 seeds (SMW) and productivity (PDT). The experiment was conducted in a factorial 2 x 4 conducted a …
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Biofertilizante bovino via água de irrigação: ação no crescimento, produção e qualidade dos frutos de maracujazeiro amarelo .
… plot. The common biofertilizer promoted greater stem diameter growth of passion fruit, faster development of the main stem and the side branches and biofertilizer enriched chemically on the plant production and productivity of the plants. The interaction types x doses of biofertilizers exercise …
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Respostas iniciais do maracujazeiro - amarelo a adubação com esterco bovino num argissolo vermelho - amarelo
… Were evaluated at 60 days after transplanting stem diameter of the plants, the secondary branch diameter, number of tertiary branches, length of internodes. After harvesting the fruits were evaluated: fruit weight, fruit diameter, fruit length, thickness of the rind and pulp yield. The stem …
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Factors Affecting the Regrowth of <i>Ilex glabra</i> in a Routinely Burned Longleaf Forest
… use of prescribed fire on <em>Ilex glabra</em> stems/m<sup>2</sup> and factors affecting the regrowth of <em>I. glabra</em> after a prescribed burn to gain beneficial knowledge for management purposes. Environmental factors and morphological parameters of <em>I. glabra</em> were sampled before …
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Terrestrial Movements and Habitat Use of Gopher Frogs (Rana capito) at Fort Benning, Georgia
… correlated with pine basal area and pine stem diameter, and positively correlated with hardwood basal area. Small mammal burrow density was negatively correlated with pine and hardwood basal area. The total number of observations at gopher tortoise burrows was positively correlated with …
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Crescimento do porta enxerto 'Sunki tropical' (Citrus sunki hort. ex tan) em substratos orgânicos.
… plants. We evaluated the results for length and stem diameter (DC, DC), length and diameter of the main root (CRP, DRP), leaf number (N ° F), leaf area (LA), dry matter (FS), reason leaf area ratio (LAR), leaf weight ratio (PPR), specific leaf area (SLA), specific leaf weight (PEF), absolute …
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Effects of Soil Amendments and Biostimulants on the Post-transplant Growth of Landscape Trees
… red maple was highest in the peat-treated trees. Stem diameter and dry mass for the control and compost treatments were higher than the biostimulant treatments in irrigated plots, but no differences were observed in non-irrigated plots. Granular humate-treated trees resulted in higher stem …
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Predicting the colonization of Heterobasidion annosum (Fr.) Bref. in thinned, loblolly pine (Pinus taeda L.) plantations on high hazard sites
… was obtained by excavations of 190 tree root system from plantations located in Eastern Virginia and Central Alabama. Multiple regression analysis indicated that stem diameter (DBH), radical growth (GR5) live crown ration (LCR), and SR samples were the most effective parameters in explaining the …
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Aspen mycorrhizae: ecology, syntheses and growth studies
… formed mantles but no Hartig nets. Dry weight, stem diameter, height and number of roottips increased in the young aspen seedlings inoculated with a majority of the fungi listed above. The implications for aspen survival and growth are discussed.
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Economic Analysis of Sunflower (Helianthus annuus) Spacing in East Texas
… spacing and cultivars. In both experiments, the stem height, stem diameter, flower diameter, and disk diameter increased as spacing increased. Also, as spacing increased, the days-to-harvest decreased. The 8 × 15 cm spacing produced the largest percentage of unmarketable and smaller size flowers …
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