BUD VARIATION IN THE EUREKA LEMON. 



67 



in the plat, 35 were above this average and 41 below it, as shown m 

 Tabic VI. The limits of the average individual-tree production 

 within the strain were 338.24 pounds and 165.86 pounds, being 

 108.21 pounds (or 47.1 per <'ent) above the mean and 64.17 pounds 

 (or 27.9 per cent) below it, respectively. In each of the other strains 

 represented by 10 or more individuals, the individual-tree variations 

 are also considerably greater above the mean than below it. 



Table XI. — Average annual crop of the individual lemon trees of several of the important 

 strains found in the investigational performance-record plat of the Eureka variety, ranked 

 according to the tveight of their average total crops, for the 6-year period from July, 1911, 

 to June, 1917, inclusive. 



m 



Description of trees. 



Average annual production per tree. 





Total crop. 



Green grade. 



Tree-Ripe grade. 



Cull grade. 



'A 



Pounds. 



Num- 

 ber. 



Pounds. 



Num- 

 ber. 



Pounds. 



Num- 

 ber. 



Pounds. 



Num- 

 ber. 



10 



Highest producing (all 

 Eureka strain) 



299. 45 

 230. 03 

 217. 55 

 200.39 

 179. SO 

 153. 72 

 144. 79 

 96.09 



89. 44 



1,341.83 

 1,051.88 

 980. 83 

 902. 91 

 808. 88 

 721. 25 

 597. 33 

 405. 00 



379. 42 



201. 71 

 144. 63 

 155. 67 

 131. 58 

 119.07 



87.69 

 117.17 



73.42 



68.46 



754.00 

 541.58 

 576.83 

 490. 16 

 445. 68 

 328. 58 

 426. 93 

 266. 30 



250. 25 



63.83 

 57.20 

 39.85 

 46.17 

 41.43 

 52. 80 

 18. 00 

 14.93 



13.48 



292. 65 

 263. 29 

 183. 75 

 212.07 



188. 70 



264. 50 



79.47 



66.82 



60.83 



33.92 



28. 20 

 22.03 

 22.63 

 19.36 

 13.23 

 "9.62 

 7.74 



7.50 



295. 18 



7fi 





247. 01 



2 

 117 



Dense-Productive strain... 

 Entire plat . . 



220. 25 

 200. 68 



10 



Small-Open strain 



174. 50 



9 



Pear-Shape strain 



128. 17 



17 





90.93 



10 

 10 



Dense- Unproductive strain 

 Lowest producing (irre- 

 spective of strain) 



71.88 

 68. 33 



Table XII shows the percentage of fruit of the three commercial 

 picking grades produced by the trees of the various Eureka strains, 

 together with the average number and percentage of variable fruits 

 recorded in each strain. The strains are here listed in the order of 

 their rank by percentages of fruit of the Green grade produced per 

 tree. The Shade-Tree, Dense-Unproductive, and Dense-Productive 

 strains rank considerably above the others under this classification. 

 However, it should be remembered that while in general fruit of the 

 Green grade is superior to that of the Tree-Ripe grade, the fruit of 

 the three strains just mentioned is much inferior in texture, thickness 

 of skin, and other characteristics to that of the Eureka strain; hence, 

 the superiority which would appear to be indicated by a study of 

 this table alone is entirely lost when consideration is given to the 

 character of the fruit itself. 



While the trees of the Small-Open strain are shown to have pro- 

 duced a slightly higher percentage of Green-grade fruit than the 

 trees of the Eureka strain, the actual production of the trees of the 

 Small-Open strain is so much less than that of those of the Eureka 

 strain that the inferiority of that strain is very apparent. The 

 decreased percentage of Cull-grade fruit produced by the trees of the 

 Shade-Tree, Dense-Unproductive, and Dense-Productive strains is 



