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      Estimativa da área foliar do feijão-vagem (Phaseolus vulgaris L.) por meio da largura máxima do folíolo central Translated title: Model to estimate the leaf area of snap bean

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          Abstract

          O experimento objetivou estabelecer um modelo matemático para estimar a área foliar de feijão-vagem de crescimento determinado por meio da largura máxima do folíolo central. As medidas foram realizadas em seis plantas (método não-destrutivo) e em quatro plantas (método destrutivo) aos 21, 30, 37, 44 e 51 dias após a emergência. A área foliar real foi determinada por meio do medidor "Area Meter" (modelo LICOR LI-3000). Os modelos matemáticos obtidos por regressão foram aplicados aos métodos destrutivos e não destrutivos, e comparados à área foliar estimada e a real. O modelo de potência (AF = 0,1026*L1,6871, R²=0,98) estima a área foliar (AF) de plantas de feijão-vagem de crescimento determinado, portanto a largura máxima do folíolo central (L) pode ser usada para determinar a área foliar pelo método não-destrutivo.

          Translated abstract

          An experiment was conducted to establish a mathematical model based on the linear measurement of the maximum width of the central leaflet to estimate the leaf area of determinate type of snap bean. The measurements were made using the non-destructive method in six plants and the destructive method in four plants on the 21, 30, 37, 44 and 51 days after emergence. The area of each leaflet was obtained by using an area meter LICOR LI-3000 model. The models, obtained by regression, were tested in destructive and non-destructive methods comparing the estimated and the measured leaf area. The model AF = 0.1026*L1,6871 (R²=0.98) was effective to estimate the leaf area (AF) of snap bean plants in non-destructive way showing that the maximum width of the central leaflet (L) estimates the real leaf area.

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          Curso de Estatística experimental

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            Estimativa da área foliar de plantas daninhas: XIII - Amaranthus retroflexus L

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              Estimating Summer Squash Leaf Area Nondestructively

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                hb
                Horticultura Brasileira
                Hortic. Bras.
                Associação Brasileira de Horticultura (Vitoria da Conquista )
                1806-9991
                March 2003
                : 21
                : 1
                : 64-68
                Affiliations
                [1 ] Universidade Estadual de Londrina Brazil
                [2 ] IAPAR
                Article
                S0102-05362003000100013
                10.1590/S0102-05362003000100013
                ac87c7d4-fbd8-4f79-b16c-a99cdcdcb147

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0102-0536&lng=en
                Categories
                HORTICULTURE

                Horticulture
                Phaseolus vulgaris L.,non-destructive method,linear measure,método não-destrutivo,medida linear

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