BUD VARIATION IN THE LISBON LEMON. 



55 



Table VIII shows the average monthly production of fruit of 

 the Green and Tree-Ripe grades by the trees of the various strains 

 and also presents these same data in terms of monthly percentages 

 of the average annual production of each grade. In this latter 

 form the data for the various strains are directly comparable, 

 showing the variations between the strains in season of bearing. 

 These variations are more clearly presented in figures 6 and 7. In 

 figure 6 the monthly percentages of production are grouped by strauas. 



'^vyp CSA7- 



FiG . 7.— Diagram showing the percentage of the total yield of fruit of Lisbon lemons of the G reen and Tree- 

 Ripe grades, by weight, which was produced each month by the trees of the various strains in the in- 

 vestigational performance-record plat during the 3-year period from July, 1914, to Jime, 1917, inclusive. 

 These are the same data that are presented in figure 6, being here rearranged to show more clearly the 

 variations between the different strains each month . The strains are listed from left to right in the same 

 order as in figure 6. Arrangement of strains: 1, 10 highest producing trees; 'Z, 22 trees of the Lisbon 

 strain; 3, 11 trees of the Bull strain; h, 3 trees of the Sporting strain; 5, 121 trees— entire plat; 6, 77 trees 

 of the Open strain; 7, 10 lowest producing trees; S, S trees of the Dense-Unproductive strain. 



The trees of the Lisbon stram are shown to have borne most heavily 

 of fruit of the Green grade in January, February, March, and April, 

 being at their maximum in March, although Table V shows that 

 the interval between the February and March pickmgs in 1915 was 

 only 21 days and Table IX shows that the picking rmg was increased 

 in size in March, 1916. The trees of the Bull stram produced the 

 largest crops of the Green grade in December, January, February, 

 and March, being at their maximum in January, a condition partly 

 due to the fact that, as shown in Table IX, the size of the picking 

 ring was reduced in that month m two of the three years, although it 

 was increased m size in that month in the third year. The trees of 

 the Open strain bore most heavily of fruit of the Green grade in 

 February, March, April, and May, being heaviest in March, like the 



