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Economic Impact of Grapevine Leafroll Disease on Vitis vinifera cv. Cabernet franc in Finger Lakes Vineyards of New York

Shady S. Atallah, Miguel I. Gómez, Marc F. Fuchs, Timothy E. Martinson
Am J Enol Vitic.  2012  63: 73-79  ; DOI: 10.5344/ajev.2011.11055

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Tables

  • Table 1

    Description of GLRD prevalence and Cabernet franc yield over time.

    Table 1
  • Table 2

    Description of disease control scenarios.

    Table 2
  • Table 3

    Cabernet franc production, cost, revenue, and financial assumptions.

    Table 3
  • Table 4

    Net present value (NPV) of no GLRD control scenarios under different Cabernet franc yield reduction (30 and 50%) and quality penalty (0 and 10%) conditions.

    Table 4
  • Table 5

    Economic impact of GLRD in a Cabernet franc vineyard under planting virus-tested vines, vine roguing, and vineyard replacement.

    Table 5
  • Table 6

    GLRD control decision matrix in a Cabernet franc vineyard based on yield reduction, GLRD prevalence, and a quality penalty.

    Table 6
  • Table 7

    Net present value (NPV) of scenarios depicting late vector-mediated (LVM) transmission occurring in a Cabernet franc vineyard in years 12, 16, or 20 with (TLV) and without roguing (NLV).

    Table 7
  • Table 8

    Sensitivity analysis with respect to the price (p) of Cabernet franc grapes: the recommendation of replacing the vineyard beyond 25% GLRD prevalence is unchanged.

    Table 8

Additional Files

  • Supplemental Data


    Survey Instrument
    To construct economic analysis scenarios, the following survey was conducted among 10 vertically integrated vineyard-winery operations in the Finger Lakes region of New York State from fall 2009 through spring 2010. The wineries selected had vineyards with a history of GLRD infection based on grafted V. vinifera cultivars, including cv. Cabernet franc, showing typical leafroll symptoms or GLRaV-1, GLRaV-2, and/or GLRaV-3 infection as indicated by ELISA and/or RT-PCR (Fuchs et al. 2009b). Respondents provided information about perceived ranges of GLRD prevalence, magnitudes of yield reduction due to the disease, disease control measures adopted by vineyard managers, and penalties incurred due to poor fruit quality.

    Files in this Data Supplement:
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