Figure 2.
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Historical series of total rainfall for late spring (April-June) over northern Portugal (purple line). Very high rainfall totals are seen in 1983, 1988, 1993, 2008 and 2016. Also shown are total grape must production in millions of litres (Ml; green line) and numbers of phytosanitary treatments recommended to control mildew and other fungal infestations (grey bars).
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