2015
DOI: 10.1590/1678-4499.0130
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Abstract: Leaf area changes affect solar radiation interception (K*), interception efficiency (ε int ) and extinction coefficient (k) of an orange tree top (cv. Pêra-Rio). In order to measure radiation transmitted through the crown a mobile sensor was horizontally installed below the crown and 0.65 m from the trunk, moving around it at 3 rpm. The model used for k determination (Monsi & Saeki theory) was assessed with independent data to estimate K*. With absence of leaves, it was detected an intense interference of trun… Show more

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Cited by 16 publications
(5 citation statements)
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“…Transpiration and photosynthesis of a plant and its microclimate characteristics essentially depend on the absorbed solar radiation, which is conditioned by leaf area and its efficiency of interception of radiant energy. The reduction in the canopy leaf area determines an exponential decrease of solar radiation interception efficiency and, consequently, reduction of the photosynthesis process and dry mass accumulation (PILAU;ANGELOCCI, 2015). This correlation is in accordance with the results found in the present study, in which the 'C13' citrange cultivar had the largest leaf area on both evaluation periods, followed by the 'Troyer' citrange at 45 DAE, and had the largest shoot and root dry mass accumulation and shoot development.…”
Section: Shoot and Root Developmentsupporting
confidence: 92%
“…Transpiration and photosynthesis of a plant and its microclimate characteristics essentially depend on the absorbed solar radiation, which is conditioned by leaf area and its efficiency of interception of radiant energy. The reduction in the canopy leaf area determines an exponential decrease of solar radiation interception efficiency and, consequently, reduction of the photosynthesis process and dry mass accumulation (PILAU;ANGELOCCI, 2015). This correlation is in accordance with the results found in the present study, in which the 'C13' citrange cultivar had the largest leaf area on both evaluation periods, followed by the 'Troyer' citrange at 45 DAE, and had the largest shoot and root dry mass accumulation and shoot development.…”
Section: Shoot and Root Developmentsupporting
confidence: 92%
“…A área foliar é um importante fator de qualidade produtiva, sendo ela responsável pela interceptação da radiação solar absorvida (Pilau & Angelocci, 2015). Em condições de estresse hídrico, a planta reage diminuindo sua área foliar, tanto pela redução do tamanho das folhas como pela perda de folhas mais velhas (Barnabás et al, 2008).…”
Section: Resultsunclassified
“…Essa parcela é praticamente coberta por vegetação rasteira e ladeada por vegetação arbórea desenvolvida de terra firme e de mangue, e apresenta elevação topográfica entre 8 e 10 m do nível do mar. Logo, é composta por múltiplas facetas em função do maior índice de área foliar, o que permite melhor aproveitamento por meio do espalhamento da radiação (MARTINS et al, 2015;PILAU;ANGELOCCI, 2015;SOUZA et al, 2012).…”
Section: Foram Ainda Registradas As Espécies Sporobolus Virginicus El...unclassified