Accurate and non-destructive estimation of palmate compound leaf area in cassava (Manihot esculenta Crantz) based on morphological traits of its selected lobes
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Abstract
Results indicated that total area of cassava compound leaf showed the best-predicted (R2 = 0.9847) using LW of middle lobe using the zero-intercept linear regression; for faster and simpler data collection, L of middle lobe was selected as predictor and the power regression was utilized in estimation of LA (R2 = 0.9299); a more complicated predictor using average LW of middle, left-most, and right-most lobes combined with number of lobes (NoL) did not significantly increase accuracy (R2 = 0.9882) compared to that using LW of middle lobe as predictor. L/W ratio was more consistent in large lobes, especially for the middle lobes (STD = 0.259). Model validation assured that all predictors combined with each appropriate models were reliable; therefore, they are recommended for estimating LA of the cassava leaf
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References
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