2019 ASHS Annual Conference

Muscadine Grapes (Vitis rotundifolia. L) are the predominant grape variety commonly grown in Florida, with current markets existing for juice, wine, and fresh fruit. They can adapt to the Florida environment better than Vitis vinifera. because they are naturally resistant to a local bacterial pathogen (Xylella fastidiosa. L) and are well-adapted to warm and humid climates. However, most Florida vineyard soil displays low soil fertility because of the sandy soil. The sandy soil is highly susceptible to erosion, depleted in organic matter contents and, therefore, in water-holding capacity and nitrate retention. There is some evidence suggesting that Biochar can adjust soil organic matter contents and buffer pH, and consequently stimulate soil microbial activity and sequestration capacity for nutrients. Improved fertilization using Biochar will not only enhance the sustainability, productivity and profitability of Florida wine grape vineyards and wineries, but also minimize the potential deleterious environmental impact of fertilizers leaching and runoff in grapes production facilities. Thus, this study intended to test the applications of Biochar to improve soil condition and muscadine growth and nutrient uptake in Florida’s vineyard. We apply the Biochar at five different rates and monitor the soil characteristics, root development, plant growth and nutrient status. Our goal is to provide information for developing Biochar application and nutrient program guidelines for grapes producers to enhance whole vine nutrition management and increase total productivity.