Materials and rates are covered in the Extension publication Texas Citrus Disease Management Guidelines . The effectiveness of chlorine is dependent upon water pH, time of exposure and the amount of free chlorine present. SOPP affixes to minor surface lesions in the peel, but it too requires water pH control. The selection of fungicides is such that the packinghouse operator can choose those that are most economical in a particular packingline operation. Sizing Citrus are sorted into size categories for uniformity, eye appeal and ease of packing.
Sizes correspond to half of the respective ring size of fruit.
Both belt and roller speeds are critical to cause fruit to spin on Its equatorial axis and permit proper sizing. Research has shown proper belt speed to be about 225 feet per minute and roller speed to be 102 rpm. Thus, each roller separates only one size of fruit, one fruit at a time, dropping the smallest size first and the largest size last. The longitudinal sizer typically is set up over packing tables so that packing must be done in conjunction with sizing. Consequently, all fruits of a given size are collected on one conveyor line rather than being scattered over several different sizers across the packinghouse.