By Sam Jones
Grape growers in Napa County are constantly looking for innovative ways to decrease waste while increasing productivity in their vineyards, but not all of these methods are high-tech or brand-new. For many, the act of accumulating, turning and spreading compost is a basic but key part of their vineyard management strategy, and has been practiced since ancient civilizations first prioritized agriculture. “Composting has always been considered key to better farming and is a key practice employed in Napa Valley vineyards,” said Michael Silacci, winemaker for Opus One and president of the Napa Valley Grapegrowers. “When composting is done properly using good management techniques and temperature monitoring, the result is a fine source of nutrients for plants and it has a positive impact on preventing soil erosion by rebuilding soil structure and supporting plant growth.” By increasing microbial activity in these waste materials – think oak leaves, grape stems, manure – pulled from their property, vintners are able to not only benefit soil health, but also keep as much of its waste on-site as possible.
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