Weather Variables for Within-Vineyard Awareness of Botrytis Risk

Figure 1

Accumulated daily Bacchus index, integrating temperature and surface wetness duration from E-L 19 (5% capfall), total daily rainfall, mean botrytis bunch rot (BBR) severity (%), and where available, the estimated date of 20°Brix of grape juice at (a) Kay, 2009-10, (b) Kay, 2012-13, (c) CP 1, 2010-11 (no surface wetness data from Mar 31 onwards), (d) CP 1, 2011-12, (e) CP 1, 2012-13, and (f) CP 1, 2013-14.

(a)

(b)

(c)

(d)

(e)

(f)