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Ciência Rural

Print version ISSN 0103-8478

Abstract

SOUZA, Adilson Pacheco de et al. Estimates of leaf area of fig tree 'Roxo de Valinhos' using linear dimensions of the leaf blade. Cienc. Rural [online]. 2014, vol.44, n.7, pp.1172-1179. ISSN 0103-8478.  https://doi.org/10.1590/0103-8478cr20130699.

This study aimed to generate and validate models to estimate the area of leaf of ​​fig tree 'Roxo de Valinhos' using linear measurements easily taken. It was collected 600 leaves, including the maximum variation in size, age and shape of leaves, wherefore, 200 leaves were used in the validation of the regressions. The statistical indicators MBE, RMSE, adjustment index and performance index were applied to evaluate the performance of 51 models estimate, derived from the application of measures of length, width and transversal, and their interactions together. The best results were obtained using the equations AF=0,1289(C+C1+C2)1,8450 and AF=0,9781[(C+C1+C2)/3]1,8451, which provide deflections and scatterings of 0.63 and 47.85cm², with adjustments, correlations and performance of 91, 95 and 87%, respectively. In the estimates based on only one measure it should be applied the equation AF=2,879C1,5451

Keywords : Ficus carica L.; leaf measures; growth analysis.

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