kru neem englishat library.uvm.edu evaluation of alternative fungicides for organic apple production in were to: (i) compare the efficiency of potassium bicarbonate, neem oil, and . scab, which is one of the most important apple diseases in New England (47, 13). . th e sam e letter d o n o. t d iffer sig n ifican tly. , Kru sk al-W allis p airw ise co.