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J.H. Lieth, L.R. Oki, P. Ng, M.C. Garcia-Navarro, S.H. Kim, and L.-Y. Li

47 ORAL SESSION 8 (Abstr. 430–435) Modeling–Floriculture/Foliage

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Edward A. Evans and Fredy H. Ballen

to estimate the demand for green-skin avocados in the United States and to use the findings to shed light on the possible price effects resulting from changes in the quantity supplied. Our study represents a first attempt to provide an empirical model

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P.R. Fisher, J.H. Lieth, and R.D. Heins

24 ORAL SESSION 9 (Abstr. 078–085) Modeling & Statistics/Cross-commodity

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Hassan Zekki, André Gosselin, and Laurent Gauthier

24 ORAL SESSION 9 (Abstr. 078–085) Modeling & Statistics/Cross-commodity

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Bin Liu and Royal D. Heins

47 ORAL SESSION 8 (Abstr. 430–435) Modeling–Floriculture/Foliage

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A. Maaike Wubs, Yun T. Ma, Ep Heuvelink, Lia Hemerik, and Leo F.M. Marcelis

In many cases, it is desirable to quantify the growth of horticultural products with functions (e.g., to analyze growth differences between treatments or as an input for crop simulation models). In all cases, measurements of fruit growth and

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F.J. Montero, J.A. de Juan, A. Cuesta, and A. Brasa

The importance of rapid, nondestructive, and accurate measurements of leaf area (LA) in agronomic and physiological studies is well known, but a search of the literature revealed little information available for grape (Vitis vinifera L.). The results described herein include a comparison of 12 different mathematical models for estimating leaf area in `Cencibel'. The simplest, most accurate regression equations were: LAi = 0.587 LW (R 2 = 0.987) and LAi = 0.588 LW (R 2 = 0.994), where LAi is leaf area measured using image analysis and LW is leaf length × maximum width. Use of maximum width (W), leaf length (L), petiole length (Lp), and dry weight of leaves (DML) as single variables in the regression equations were not as closely associated with total leaf area, although their R 2 values were also highly significant.

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Baldev Lamba and Grace Chapman

, pointing to the rapid acceptance and importance of the sustainability paradigm. Many institutions of higher learning are promoting a variety of “green” and “sustainable” initiatives in a race to become leaders and models of transforming education and

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J.H. Lieth, P.R. Fisher, and R.D. Heins

24 ORAL SESSION 9 (Abstr. 078–085) Modeling & Statistics/Cross-commodity

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Royal D. Heins and James Faust

29 ORAL SESSION 11 (Abstr. 074-080) Cross-commodity: Modeling/Statistics