landscape fabric v. plastic--blight avoidance

[lumierefrere]

Last year I lost nearly everything to late blight. This year, beyond more dedicated spraying, I'm intending to cover the soil. Thinking of disease (and slugs)-- Are there benefits or drawbacks to landscape fabric? The plastic mulch I've used in the past has seemed so light and narrow, I want something heavier. Has anyone tried tarps? You could cut them in strips, 4' wide or whatever required. Nice and heavy, no struggling with them if the wind blows and certainly reusable for many seasons.

Barb