In a field trial led by Josiah Hunt, the Oasis Vineyard project evaluated the effects of biocharBiochar is a carbon-rich material created from biomass decomposition in low-oxygen conditions. It has important applications in environmental remediation, soil improvement, agriculture, carbon sequestration, energy storage, and sustainable materials, promoting efficiency and reducing waste in various contexts while addressing climate change challenges. More and compost on vineyard productivity over six harvest seasons. The study found that plots treated with both biochar and compost experienced an average yield increase of more than 30% compared to control plots.

Initiated in 2016, the trial was conducted on an 8-acre site in Monterey County, California, with Pinot Noir vines planted in 2017. The soil, primarily Oceano Sand with low organic matter content (0.7%), was amended prior to planting. Treatments included:

• Control: No amendments
• Compost: 15 tons per acre
• Biochar: 10 tons per acre
• Compost + Biochar: 15 tons compost and 10 tons biochar per acre

All plots received identical irrigation and fertilization regimes.

Economic analysis revealed that by the sixth harvest, additional revenue per acre was $11,432 for biochar, $15,689 for compost, and $17,607 for the combined treatment, after accounting for amendment costs. Notably, grape quality remained consistent across all treatments.

These findings suggest that integrating biochar and compost into vineyard soil management can enhance yields and provide economic benefits without compromising grape quality.

READ MORE: Oasis Vineyard Field Trial with Biochar and Compost _ 6th harvest report