This is about the time of year paranoia sets in. I start to see things that are not right and think that the entire vineyard is destined to die off. 
This time, it's browning on the edge of the leaves. I noticed similar leaf oddities last year, but yellow rather than brown. And this is definitely more an issue far from the veins. Also, strangely enough, the phenomenon is scattered through the vineyard (3 vines on row 7, 1 on row 4, 1 row 3). I'll do the research over the next few days.
1 comment:
Hmm, based on UCDE handouts it kinda looks like phosphorus deficiency, described as 'appears as red dots and later as red bars aligned at right angles to the veins'.
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