Disease management in organic apple orchards in Vermont is focused on controlling diseases with sulfur fungicides The objective of this two year study was to evaluate the target and non-target effects of an organic disease management system containing agricultural biostimulants compared to two sulfur-based systems on foliar and fruit diseases  pest and beneficial arthropods  tree growth  yield and fruit quality on four cultivars  `Ginger Gold'  `Honeycrisp' and `Liberty' and `Zestar!'