Research in a newly planted organic vineyard showed just how difficult and labor-intensive weed control is under organic conditions. Not only can weeds and cover crops compete with young vines and reduce growth, but also mechanical means to control weeds can injure the tender trunks. Dr. Carol Miles, extension specialist at Washington State University, recently completed a two-year trial of sustainable weed management in a three-acre certified organic vineyard in WSU’s Northwestern Washington Research and Extension Center at Mount Vernon. Results of the trial were published in 2012 in HortTechnology, the scientific journal of the American Society for Horticultural Science. […]