54 MANUAL OF TROPICAL AND SUBTROPICAL FRUITS 



vary greatly with different sorts, they serve at least to show 

 what may be expected from one variety under certain conditions. 



According to George B. Cellon, a Trapp tree seven to ten 

 years old will yield, under good cultural treatment, between 

 five and ten crates of fruit, counting forty fruits to the crate, 

 which is about the average pack. The returns from one of the 

 largest groves near Miami for two seasons, however, show an 

 average of only one and one-half crates to a tree. This is a 

 low yield, and should certainly be exceeded. Krome, who has 

 kept careful crop records, finds that his Trapp trees at five 

 years of age yield one to four crates a tree, two and a half 

 crates being the average. Charles Montgomery of Buena 

 Vista, Florida, has obtained yields of about the same amount, 

 his estimate being that a mature Trapp grove should produce 

 500 crates to the acre. 



The yield of other varieties in Florida is not so well known, 

 since none except Pollock has been planted to any extent, and 

 even this variety is grown in comparatively small numbers. 

 In regularity of bearing Trapp excels Pollock, the latter showing 

 a tendency to fruit in alternate years. 



In Guatemala and Mexico, many seedling trees of the 

 Guatemalan race tend to produce good crops only in alternate 

 years. The feature is not so marked in trees of the West 

 Indian race which have been observed, nor in those of the 

 Mexican ; nor is it true that all Guatemalans possess it. It is 

 possible that over-production one season results in a crop 

 failure the following one, and it is probable that unfavorable 

 cultural conditions have something to do with the matter. 



SEASON 



The season during which avocados are obtainable in southern 

 Florida has been, until very recently, from July until January. 

 A few Trapps may hang on until February or even as late as 



