Row Covers

[lycomania]

Hi TomatoVille!
This year I used row cover material over my single row of tomatoes, which I had planted very early through clear plastic sheeting. Through testing I learned that the sheeting increased my soil temperatures nicely, and I thought the row cover would
also help keep things warmer (and protect from light frosts).

What happened is that some of my leaves seemed to be rotting under the cover.
I suspect it was just a few that were in contact with it. So, I removed the cover early and everything is just great.

I was just wondering if you had any ideas why I had some leaf problems under it? It was standard poly-spun type row-cover stuff, and during the time it was on, it was nice sunny and dry-ish weather, as I remember. Thanks!