Grape Notes

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Figure 1. Cabernet Sauvignon in SLO County with magnesium deficiency symptoms.
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Spring Fever 2019

June 18, 2019
Numerous vineyards throughout this region and elsewhere in California have displayed unusual leaf symptoms this spring, consisting of yellowing and/or bronzing of the leaf blades along with necrotic margins in some cases or even necrotic interveinal areas.
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