Leaf water/sun scald or some disease?

BlackThumb · June 9, 2010

I was hoping to get some opinions on the following leaf condition.

Before the leaf developed any condition. I noticed that condensation and rain had a tendency to collect along the edges of these leaves for some reason. I typically water at night, but one night I was too tired and hot to water in the evening so I waited till morning when it just started to get light but hours before the sun directly hits these plants.

1: My primary suspicion is water simply collected along the edges of the leaves and a few other areas where I had noticed before the water was prone to collect; and this particular day was one of the hottest and brightest days this year; so the water acted like a magnifying glass to cause sun scald.

2: My secondary suspicion is that perhaps it is some sort of opportunistic virus, bacteria, fungus or mold that was attracted by the moist conditions where the water frequently condenses and collects on the leaves. Perhaps it was merely a coincidence that the leaf damage started a day after I watered in the morning and it was unusually hot and bright. I don't see any discoloration, slime, webbing, or powder that is typically present for a fungus, mold or mildew.

3: Perhaps it's something else I haven't thought of.

June 9, 2010	#1
BlackThumb Tomatovillian™ Join Date: Jun 2010 Location: SW Ohio USA Posts: 13	Leaf water/sun scald or some disease? I was hoping to get some opinions on the following leaf condition. Before the leaf developed any condition. I noticed that condensation and rain had a tendency to collect along the edges of these leaves for some reason. I typically water at night, but one night I was too tired and hot to water in the evening so I waited till morning when it just started to get light but hours before the sun directly hits these plants. 1: My primary suspicion is water simply collected along the edges of the leaves and a few other areas where I had noticed before the water was prone to collect; and this particular day was one of the hottest and brightest days this year; so the water acted like a magnifying glass to cause sun scald. 2: My secondary suspicion is that perhaps it is some sort of opportunistic virus, bacteria, fungus or mold that was attracted by the moist conditions where the water frequently condenses and collects on the leaves. Perhaps it was merely a coincidence that the leaf damage started a day after I watered in the morning and it was unusually hot and bright. I don't see any discoloration, slime, webbing, or powder that is typically present for a fungus, mold or mildew. 3: Perhaps it's something else I haven't thought of.