Use allowed under Special Local Needs permit No. 860051. Authorization must be obtained from County Agriculture Commissioner before using. Use amount given for large mature trees and less for smaller trees. Citrus fruit are susceptible to brown rot caused by Phytophthora spp. The soil borne fungus is splashed onto the fruit during rain storms therefore generally the lower fruit are infected.
Prevention is the key to control.
Prune the tree skirts to 24 inches or more above the ground. Direct the spray so that the ground and up to 4 feet have good coverage. Repeated applications may be needed. Anthracnose is caused by Colletotrichum gloeosporioides and can infect stems, leaves, and fruit. It is generally a problem in groves where there is a population of this fungus.