Dec. 15 (Bloomberg) -- Rudy Marchesi and his girlfriend spent one Saturday in October stuffing 140 hollow cow horns with manure and burying them on his Oregon vineyard. It's the secret to a great pinot noir, he says.
Marchesi is one of a growing number of Oregon winemakers who have embraced biodynamic farming, an alternative to chemical fertilizers and pesticides. Adherents spray their soil with diluted solutions of compost, use horsetail tea to control fungi and pick their grapes during certain phases of the moon and planets.
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