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THE DEPENDENCE OF LEAF AREA SIZE AND DRY MATTER OF BEAN ON PLANT DENSITY
Acta Horticulturae, 1997 The effect of crop density on the leaf area and the dry weight growth per bean plant was examined in the agro-ecological conditions of northern Sumadija (Serbia) during the period 1993 - 1995. Small plot field trials were conducted using a split-plot design in four replicates. The soil type was brown forest soil.
Božić, M. +4 more
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Estimating leaf area density of Osmanthus trees using ultrasonic sensing
Biosystems Engineering, 2019Leaf area density is a key tree canopy parameter required for the intelligent profiling of spray applications. A method to calculate leaf area density of target trees based on the echo signals of ultrasonic sensors was proposed. The relationship between leaf area and leaf mass of Osmanthus trees (Osmanthus fragrans) was analysed.
Huichun Zhang +2 more
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Photographic method to measure the vertical distribution of leaf area density in forests
Agricultural and Forest Meteorology, 2000Many current vegetation–atmosphere models require structural information describing the canopy in order to calculate rates of mass and energy exchange. One of the most important pieces of information is the variation with height in leaf area density, ρ (m2 leaf area per m3 canopy volume), but it is notoriously difficult to measure this in forest ...
Patrick Meir
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Predicting plant leaf area production: shoot assimilate accumulation and partitioning, and leaf area ratio, are stable for a wide range of sorghum population densities [PDF]
, 2002 Predicting plant leaf area production is required for modelling carbon balance and tiller dynamics in plant canopies. Plant leaf area production can be studied using a framework based on radiation intercepted, radiation use efficiency (RUE) and leaf area ratio (LAR) (ratio of leaf area to net above-ground biomass).
Lafarge, T. A., Hammer, Graeme L.
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Experiment of Canopy Leaf Area Density Estimation Method Based on Ultrasonic Echo Signal
Agriculture (Switzerland), 2022 Variable-rate spray systems with canopy leaf area density information detection are an important approach to reducing pesticide usage in orchard management. In order to estimate the canopy leaf area density using ultrasonic sensors, this article proposed
Mingxiong Ou +2 more
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Leaf Area Index as Vegetation Density Measure for Hydraulic Analyses
Journal of Hydraulic Engineering, 2013AbstractThe correct parameterization of vegetation using measurable plant characteristics is essential for reliable flow resistance estimates. This paper focuses on the impact of density and distribution of the leaf mass on the drag force. Direct drag force measurements on flexible artificial plants were conducted in a stand. The experiments were novel
J. Jalonen, J. Järvelä, J. Aberle
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Ecology and Evolution, 2015 : The relationship between spatial density and size of plants is an important topic in plant ecology. The self-thinning rule suggests a 123/2 power between average biomass and density or a 121/2 power between stand yield and density.
Peijian Shi +2 more
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Forests, 2019 The morphology, inclination, and spatial distribution of leaves in different parts of tree crowns are important determinants of the radiation, momentum, and gas exchange between the canopy and the atmosphere.
Christoph Leuschner +1 more
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Effect of Leaf Orientation, Leaf area, and Plant Densities on Corn Production1
Agronomy Journal, 1974AbstractThe effect of corn (Zea mays L.) leaf orientation on grain yield and production practices has been the subject of conflicting reports over the past few years. Plant population is reported to be the cause of the discrepancies. The objectives of the present study were to determine the effect of plant population and leaf orientation on corn plant ...
D. K. Whigham, D. G. Woolley
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Sizedensity metrics, leaf area, and productivity in eastern white pine
Canadian Journal of Forest Research, 2005Sizedensity metrics are used extensively for silvicultural planning; however, they operate on biological assumptions that remain relatively untested. Using data from 12 even-aged stands of eastern white pine (Pinus strobus L.) growing in southern New Hampshire, we compared size-density metrics with stand productivity and its biological components ...
Innes, James C. +4 more
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