Mulched cover crops as an alternative to conventional weed management systems in vineyards

S STEINMAUS*, C L ELMORE�, R J SMITH�, D DONALDSON§, E A WEBER§, J A RONCORONI� & P R M MILLER** *Department of Biological Sciences, California Polytechnic State University, San Luis Obispo, CA, USA, �Department of Plant Sciences, University of California, Davis, CA, USA, �University of California Cooperative Extension, Sonoma County, Santa Rosa, CA, USA, §University of California Cooperative Extension, Napa County, Napa, CA, USA and **Department of Rural Engineering, Federal University of Santa Catarina, Florianópolis, SC, Brazil