Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"canopy architecture"”.
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The feedback effects of canopy architecture : why are African acacias flat-topped?
… flat topped crown. This study identifies this architecture using the simple measures of height, diameter and spread. In this way the flat-topped species are identified and differentiated from the other acacia species (A. nilotica & A. tortilis). It has been suggested that this shape is an …
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Canopy Architecture and Plant Density Effect in Short-Season Chickpea (Cicer arietinum L.)
… optimum population density of varying chickpea canopy types, i.e., leaf type and growth habit, by investigating seed yield responses at 30 to 85 plants m-2 and ii) identify desirable parental traits for breeding programs by assessing growth and yield parameter responses to varying leaf types and …
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Plant Architecture, Photosynthetic Responses, and Population Biology in the Palms Socratea Durissima and Scheelea Zonensis on Barro Colorado Island, Panama (Physiological, Tropical)
I investigated the role of canopy architecture and biomass allocation in the population biology of the palms Socratea durissima and Scheelea zonensis on Barro Colorado Island, Panama. Canopy architecture and biomass allocation change as plants mature, and can affect light interception and carbon …
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Characterizing vegetation structure using waveform LiDAR
The structure of light penetration through the canopy plays an important role in water, carbon, and energy fluxes between the biosphere and the atmosphere. Total foliage and foliage distribution are major aspects of canopy structure that significantly influence light and vegetation interaction. …
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Genetics by Nutrient Availability Interactions on Short-term Carbon Pools and Fluxes in Young Pinus taeda Plantations
… nutrient limitations due to more favorable canopy architecture and lower N demand. Our results clearly show that contrasting ideotypes have the potential to respond differently to differences in nutrient availability in terms of biomass partitioning, leaf physiology, and leaf biochemistry …
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Optimizing nitrogen fertilization practices under intensive vineyard cover cropping floor management systems
… were very few differences in pruning weights, canopy architecture, components of yield, and primary fruit chemistry amongst nitrogen treatments. Sauvignon blanc petiole nitrogen concentration, season-long chlorophyll content index (CCI) values, and berry YAN were most affected by the highest …
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From Hyperspectral Indices to Global Fluorescence: PACE Vegetation Indices as Predictors of Terrestrial Photosynthesis
… further emphasizes the significant role of canopy structure and chlorophyll information captured by these two indices in explaining global SIF variability. Seasonal analyses indicate that while EVI and CIRE are most effective in most forests and agricultural systems, moisture-sensitive …
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The Role of Host, Environment, and Fungicide Use Patterns in Algorithms for Improving Control of Sclerotinia Blight of Peanut
… of moisture, soil temperature, vine growth and canopy density and summing the values for the previous 5 days. Spray thresholds of FDI 16, 24, 32, 40, 48 were compared to a 60, 90, 120 DAP (days after planting) schedule and the standard demand program. Field trials in 1994 indicated that …
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Aspects of the biology of climbers in southern Africa
… was found to be positively correlated with tree canopy architecture and trellis availability. More climbers entered host trees with low canopies (< 15 m) than those with high canopies. Trees with low canopies had more climbers entering vertically into the canopy while trees with high canopies had …
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The Impact of Prohexadione-calcium on Grape Vegetative and Reproductive Development and Wine Chemistry
… Seyval. P-ca (375 mg/L) increased Cabernet franc canopy gaps but increased Cabernet Sauvignon lateral leaf area and leaf layer number. P-ca reduced components of yield for all cultivars. In 2001, P-ca (250 mg/L) was applied singularly at weekly intervals to Cabernet Sauvignon clusters and pre and …
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Physiological aspects of relative changes in nitrogen and plant density stress tolerances over a 38-year period of US maize hybrid introductions
… enhanced tolerance to higher density; and canopy architecture changes. Newer hybrids were known to accumulate more dry matter and nitrogen in the post-silking period, but achieving a more comprehensive knowledge of pre-silking and post-silking dynamics required further understanding of dry …