Spray Programs to Control Citrus Rust Mite in Florida

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Abstract
Experiments to avoid the constant use of zineb (zinc ethylene-bis-dithiocarbamate) against citrus rust mite, Phyllocoptruta oleivora (Ashmead), by integrating 5.2 ounces of zineb per 100 gallons of spray, 2,0 ounces of Chlorobenzilate (ethyl 4,4[image]-dichlorobenzilate) and 160.0 ounces of sulfur in spray programs were conducted on Valencia orange trees. Three sprays were used in each program postbloom midsummer and fall. Chlorobenzilate was a good substitute for zineb in postbloom sprays, but poor in the summer; sulfur was unsatisfactory in both postbloom and summer sprays; and Chlorobenzilate, zineb and sulfur were equal in the fall. The sequence of postbloom Chlorobenzilate, summer zineb and fall sulfur was a good substitute for three applications of zineb.

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