Soil Fertility for Organic Orchards and Vineyards

While the basics of N-P-K for organics are fairly universal concepts, the production of perennial crops has very different cycles from those of vegetables. Many past EcoFarm sessions on soil fertility have primarily focused on vegetables. Perennial crops are often more sensitive to nutrient balances and ratios, micronutrient deficiencies, and timing issues for application of fertilizers. Compost in spring or fall? When and if to use limestone? Are foliar applications worthwhile and for which nutrients? Fascinating topics like the interaction between nutrient applications and disease progression will also be addressed.