BUD VARIATION IN THE LISBON LEMON. 



51 



designations, but have been recorded under the same names. The 

 fruits of the Bull strain are typically somewhat collared and inclined 

 to be ridged, but only the fruits which showed those characteristics 

 in a marked degree were recorded in those classes during these studies. 

 The trees of the Open strain produce less fruit of these fluctuating 

 forms than any of the other strains of the Lisbon variety which have 

 been studied. 



In Table V are recorded the dates on which each picking was made 

 from the trees in the Lisbon study plat during the four years, July, 

 1913, to June, 1917, inclusive. An attempt was made to obtain the 

 picking records at mtervals of 30 days. Unavoidable delays, how- 

 ever, were sometimes occasioned by unfavorable conditions of 

 climate, by interfering periods of irrigation, or by other causes. Un- 

 favorable weather conditions during the winter season often delayed 

 the progress of the work from a day to several weeks. At four times 

 durmg the period from July, 1913, to June, 1917, it was impossible 

 to make a picking at the proper time. In April, 1915, owing to cer- 

 tain conditions in the orchard, it was thought best to begin the pick- 

 ing from the side of the plat opposite to that which had been the 

 previous practice. This made about a 30-day interval between the 

 first trees picked at that time and an increasing interval up to nearly 

 two months for the rest of the plat. The trees picked first were 

 credited with an April yield, but with no picking in May. The trees 

 picked during the latter part of that period were listed with a crop in 

 May, but with no picking in April. 



Table Y.— Dates on which fruit was picked from the lemon trees of the Lisbon variety in 

 the investigational ■performance-record plat froTn July, 1913, to June, 1917, inclusive. 



[When this plat was selected the trees had not been picked for about five weeks, so the records were begun 

 on them at once and credited as the July crop.] 



Month. 



First and last date of each picking period. 



1913-14 



1914-15 



1915-16 



1916-17 



July 



June27to July 2.. 



Aug. 13 to 16 



Sept. 13 to 17 



Oct. 27 to 29 



July 15 to 20 



Aug. 18 to 21 



Sept. 22 to 25 



Oct. 26 to 31 



Nov. 23 to 28 



Dec. 23 to 30 



Jan. 15 to Feb. 1 . . 

 Feb. 24 to Mar. 3.. 

 Mar. 17 to 25 



July 3 to 17 



Aug. 10 to 13 



Sept. 9 to 14 



Oct. 12 to 14 



Nov. 11 and 12 ... . 



Dee. 10 to 15 



Jan. 7 to 20 



Feb. 8 to 14 



Mar. 8 to 13 



Apr. 12 to 17 



May lOto 13 



June 2 to 5 6 



July 20 to 25. 





Aug. 21 to 26. 





Sept. 26 and 27. 





Oct. 23 to 25. 



November 



Nov. 20 to 22. 



December 



Dec.9toll 



Jan. 3 to 19 



Feb. 16 to Mar. 6.. 

 Mar. 24 to Apr. 2.. 



Dec. 20 to 24. 





Jan. 22 to 25. 





Feb. 23 to 28. 





Mar. 28 to Apr. 5. 



April 



Mav 



May5t0l3 



June 3 to 8 



Apr. 27 to May 10 a. 

 June 2 to 9 



May 15 to IS. 

 July 6to7.<: 







o Owing to delay caused by irrigation and cultivation the order of picking the trees was here reversed 

 and the new order was followed in all subsequent work. The trees which were picked on March 25 at the 

 end of the March picking were picked again on April 27, while those picked on March 17 were not picked 

 again until May 10. 



b The 15 trees on the western section of the plat were not picked until June 19 and 20. 



c The 15 trees on the western section of the plat were not picked in April or May, but were picked on 

 June 18 and 19. 



