16 



BULLETIN 815, U. S. DEPARTMENT OF AGEICULTURE. 



In Tables III and IV are presented the detailed performance 

 records of 25 representative trees from the Lisbon investigational 

 plat, mcluding examples of all the strains. These trees were arbi- 

 trarily selected by taking evei-y fourth tree of the Lisbon strain, 

 as listed in Table I, every eighth tree of the Open strain, every third 

 tree of the Bull and Dense-Unproductive strains, and two of the 

 three trees of the Sporting strain, always including the highest and 

 lowest ranking trees of each strain. In this way the selection included 

 6 trees of the Lisbon strain, 10 of the Open strain, 4 of the Bull strain, 

 3 of the Dense-Unproductive strain, and 2 of the Sporting strain. 



Table II. — Distribution of lemon trees of the Lisbon variety in the investigational per- 

 formance-record plat, shoiuing also the strain and the rank in crop production of each 

 individual tree for the 4~year period from July, 191-3, to June, 1917, inclusive. 



[The positions of trees in ranks 22 and 81 are not indicated in the table. They were both No. 10 in rows 25 

 and 83, respectively, both belonging to the Sporting strain. The tree numbers count from the southern 

 end, which is taken as the head of the row. Explanation of symbols: ©= Lisbon strain, n= Bull strain, 

 <J=0pen strain, A= Dense-Unproductive strain, (3= Sporting strain, X= not included in records.] 





















Number of 



row 























Serial No. of the tree 

 in the row. 



35 



34 



33 



32 



31 



30 



29 



28 



27 



23 



56 



57 









'3 









1 



• 





a 



1 



^ 



s 



« 



1 



DQ 



A 

 • 



A 



« 



115 



66 

 120 



85 

 75 

 121 

 70 

 84 

 68 

 87 

 83 

 89 



d 



'm 



M 



A 

 A 

 A 

 • 

 A 

 A 

 9 

 • 

 • 

 G 

 G 

 • 



118 



116 

 119 

 59 

 114 

 117 

 35 

 39 

 30 

 18 

 17 

 97 



II 



.a 

 g 



CO 



i 





1 



.g 



CO 



« 



d 



1 



7 





















8 



• 



o 



111 

 11' 



• 



69 

 48 

 77 

 64 

 93 

 62 

 96 

 80 

 79 

 90 

 61 



• 

 • 



38 

 47 

 67 

 05 

 73 

 92 

 52 

 105 

 112 

 50 

 45 



• 

 • 

 • 

 • 

 X 

 X 

 X 

 X 

 • 

 • 

 • 



•51 

 49 

 29 

 36 



"58 

 82 

 53 



• 

 • 

 • 

 • 

 • 



X 

 X 

 X 



'• 

 • 

 • 



37 

 60 

 55 

 33 

 63 



"54 

 34 

 44 



Gt 4 



A102 



G 



G 



• 

 G 



G 

 • 



76 



13 



1 



2 



72 



88 



14 



46 



12 



16 



104 



G 

 • 



• 

 G 

 • 

 • 

 • 

 • 

 G 



6 

 56 

 42 



3 

 74 

 40 

 71 

 95 

 21 

 15 

 43 











9 











10 .. 



110 a 



2 



• 

 • 

 G 

 O 

 G 

 G 

 • 



8 

 98 

 91 

 99 

 23 

 86 

 31 

 26 

 94 











11 



12 



78 

 101 

 106 



28 

 113 



• 

 • 

 • 

 • 



H 

 D 

 D 

 D 

 D 

 • 

 D 



41 

 7 



25 



10 



5 



103 



19 



D 

 D 

 D 

 D 

 • 

 D 

 D 



32 



57 



13. . 



97 



14 



?0 



15 



108 



16 . 



107: A 



''4 



17 



100 

 109 



• 

 • 



9 



18 















The following notes regarding some of the methods of recording 

 and compilmg the data presented in Table III may assist the reader 

 to understand and interpret it. 



Commercial performance records were not being obtained on the 

 orchard in which this plat was located, and the workmen were 

 unacquainted with such operations. Consequently on a few occasions 

 the fruit from some of the performance-record trees was removed 

 by the regular workers in the grove before the records were made. 

 Fortunately the most of such losses occurred in the summer or 

 fall when the production was light and the total recorded crops 

 were not greatly affected thereby, but the record for tree 1-83-10 

 is considerably reduced by similar losses in January and February, 

 1914, at which time the production was very heavy. At least 200 

 pounds of fruit was picked at that time and not recorded, so that 

 the relative rank for this tree is really considerably higher than is 



