BUD VARIATION IN THE LISBON LEMON. 



61 



Table XTI. — Average veuiht per fruit for lemons of the Green and Tree-Ripe grades 

 produced by the trees of the vuriovs strains of the Lisbon lemon in the investigational 

 performance-record plat. 



[Thcso data cover the 4-ycar period from July, l!)i:3, to June, 1917, inclusive, except as noted in Table I.] 



Number 

 of trees. 



77 



121 



10 



22 



8 

 10 



3 

 11 



Deseiiption of trees. 



Open strain 



Entire plat 



Lowest producing (Irrespective ofstrain). 



Lisbon strain 



Dense-Unproductive strain 



Highest producing (irrespective of strain) 



Sporting strain 



Bull strain 



Average weight per fruit 

 (ounces;. 



Green 

 grade. 



Tree- 

 Ripe 

 gra&e. 



4.317 

 4.348 

 4. 330 

 4.351 

 4.350 

 4.415 

 4.428 

 4.479 



3. 573 

 3.616 

 3. 534 

 3.706 

 3.804 

 3.849 

 4.052 

 4.007 



Both 

 grades. 



4.087 

 4.172 

 4.199 

 4.249 

 4.321 

 4. 345 

 4.387 

 4.439 



The variations in seel content in the several Lisbon strains from 

 month to month throughout the year are presented in Table XIII 

 and the data for the Open, Lisbon, and Dense-Unproductive strains 

 are shown graphically in figure 11. The irregularities for November 





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Fig. 11.— Diagram showing the average number of seeds per fruit of some of the strains of the Lisbon 

 lemon found each month on trees in the investigational performance-record plat during the 3-year 

 period from July, 1913, to June, 1916, inclusive. 



and April are probably accounted for by the fact that owing to 

 interference of one sort or another records are available for only 

 two seasons in November and for one season in April. The periods 

 of lightest and heaviest crop production are known to vary somewhat 

 from year to year, as already shown, and it is believed that in the 

 same manner the seasons of high and low seed content fluctuate in 

 different years. Hence, with records for only two years for Novem- 

 ber and one year for April, wliile the other months are represented 

 by data for three years, it is quite probable that the relative variations 

 as shown are somewhat incorrect. 



