10 CIRCULAR 7 73, U. S. DEPARTMENT OF AGRICULTURE 



Distribution of decay by types was as follows: 



Distribution 



Kind of decay : Carlots {number) Average per carlot (percent) 



Gray mold rot 16 2.7 



Rhizopus rot 14 2.5 



Other decay _ 2 1.0 



On the basis of all carlots inspected there were 2.5 percent of gray 

 mold rot, 1.9 percent of rhizopus rot, and 0.1 percent of other decay — 

 a total of 4.5 percent. 



Grapefruit 



Approximately 43,000 carlots of domestic grapefruit were unloaded 

 during the 7-year period. Nearly 58 percent were boat shipments, 

 mostly from Florida but partly from Texas. Forty-two percent were 

 rail shipments from Florida, Texas, California, and Arizona, from 

 which there were a few scattered carlots ; most of the rail unloads were 

 from Florida. A few carlots came from Florida by truck. Nearly 

 3,500 carlots were imported by boat. 



Inspections were made on 1,157 carlots, or approximately 6 percent 

 of all rail unloads. Distribution of decay within them was as follows: 



Carlots in indicated Carlots in indicated 



decay class decay class 



Decay class (percent) : Number Percen t Decay class (percent)— Number Percent 



569 49.2 Continued 



Trace-4 507 43.8 15-19 7 0.6 



5-9 60 5.2 20-24 2 .2 



10-14 12 1.0 



Decay, averaging 2.4 percent per carlot showing decay, was found 

 in 588 carlots, or 51 percent of those inspected. Distribution of decay 

 by types was as follows: 



Distribution 



Kind of decay : Carlots (number) Average per carlot (percent) 



Blue mold' rot 376 2.4 



Stem-end rot 163 2.1 



Other decay 91 1.5 



A summary of all grapefruit inspections is presented in table 4. 

 Most of the carlots inspected were from Florida or Texas. The total 

 of decays ranged from 0.5 to 2.7 percent and averaged 1.2 percent for 

 the entire period. Blue mold rot was more prevalent than stem-end 

 rot in 5 years. Decay was most prevalent in fruit from California 

 and least so in that from Florida. Stem-end rot was reported only 

 from Florida and Texas. In the analysis of Florida and Texas data 

 by months it was found that decay was least prevalent from Novem- 

 ber through February. Blue mold rot was most prevalent from 

 March through July. Stem-end rot was most prevalent during July, 

 September, and October. 



