PT  - JOURNAL ARTICLE
AU  - Erwin A. Elsner
AU  - Gerald L. Jubb, JR.
TI  - Leaf Area Estimation of Concord Grape Leaves from Simple Linear Measurements
AID  - 10.5344/ajev.1988.39.1.95
DP  - 1988 Jan 01
TA  - American Journal of Enology and Viticulture
PG  - 95--97
VI  - 39
IP  - 1
4099  - http://www.ajevonline.org/content/39/1/95.short
4100  - http://www.ajevonline.org/content/39/1/95.full
SO  - Am J Enol Vitic.1988 Jan 01; 39
AB  - Simple linear measurements of Concord grape leaves were tested for suitability as predictors of actual leaf area. True leaf areas were determined using a Li-CorTM leaf area meter and were examined for correlations of linear measurements of leaves and combinations of those measurements. Linear measurements were strongly correlated with actual leaf areas. Both a one- and a two-variable model were found suitable for estimating Concord leaf area: Area = -3.01 + 0.85 (W x L) (R2 = 0.9841) or Area = -1.41 + 0.527(W2) + 0.254(L2) (R2 = 0.9884) where W = maximum leaf width and L = length of the leaf midvein.