Incorporation of SuperFifty Prime into a citrus fruit set and quality management programme will contribute substantially towards increased production. SuperFifty Prime treatments reduce oxidative stress build-up during reproduction in nutritionally sound trees and will improve fruit-set and marketable grade. In addition, SuperFifty Prime application scheduled 3-5 days prior to a stress event (cold, drought, heat or salinity) will reduce crop losses and significantly increase yield in citrus.