Pre-planting cover crops affect weed and vine growth on first-year vineyards
These authors use cover crops right before vineyard establishment -along with an herbicide that turns the cover crop into a mulch- to suppress weeds and improve vine growth.
The full text appears in the journal HortScience: http://hortsci.ashspublications.org/cgi/reprint/32/6/1040
154 cover crops and herbicides before vineyard establishment .pdf