STATISTICAL COMPARISON OF FLORIDA CITRUS FRUIT SIZE DISTRIBUTIONS FOR THE 1995-97 SEASONS

LERIN, EDUARDO

Abstract


As a result of 1995-96 and 1996-97 Citrus Sampling System Evaluation projects, contracted by the Florida Citrus Commission with the University of South Florida (USF), size distribution data was collected weekly at 20 different citrus processing plants throughout the state of Florida. In all, almost 300 loads of citrus were checked. This paper compares the collected data with data from the Florida Agricultural Statistics Service (FASS). Accurate prediction of the fruit-size distribution is important for citrus processors so that proactive adjustments can be made to the extraction line to optimize yield and quality. In the FASS monthly maturity test results and fruit size reports, data is presented from 4/5 bushel samples collected from the grove and sized. This size distribution is presented as a percent of fruit falling within given size ranges. These size ranges were grouped to correspond to the sample collected by the University of South Florida (USF). The USF data was collected in the processing plants, prior to extraction, and can be used to validate the sampling techniques used by the FASS. Since there is little knowledge about the fruit size distribution, this paper discusses the results of a parametric statistical analysis performed on the data.

Keywords


citrus; potassium nitrate; monopotassium phosphate; dipotassium phosphate; foliar fertilization; fruit size

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283