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 intervals 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 
during 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 V.—Dates on which fruit was picked from the lemon trees of the Lisbon variety in 
the investigational performance-record plat from 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.] 
First and last date of each picking period. 
Month. ears 
: 1913-14 1914-15 1915-16 1916-17 
SUMliy es eS poser rates June 27 to July 2..| July 15 to 20.......} July 3 to17........ July 20 to 25. 
SAI SUS Gases ses spat Aug. 13 to 16....-- INKS WSK) Abo sce ANISM ORO Ses ae Aug. 21 to 26. 
Septem bereeecesca- see Septal 3itoleese-- Sept. 22 t0/25. 22.2. Sept. 9 to 14....... Sept. 26 and 27. 
Octoberey ce cee OKs PAO Poco scca|| OGia ABO SI ogee) OG IM Wo IRA Sane Oct. 23 to 25. 
INGEN OS oo Oc asseoe See] HERS Se eee Reema INOWes23)0Oi28 eee Nov. 11 and 12....| Nov. 20 to 22. 
Decembermeersnsceerene DEO, YUO Wh sasocce IDCs ZB eWonocse IDEC, 110) HO) W555 ob6e Dec. 20 to 24. 
Jamal asa eee. creer Vein, BHO) Nc oeeac Jana Loitowebet al vane 7to20e-- 4-52 Jan. 22 to 25. 
He bulayanececesc ene Feb. 16 to Mar. 6..| Feb. 24 to Mar. 3..| Feb. 8to14....... Feb. 23 to 28. 
Mare ara nlacfoniee ~ 3122 Mar. 24 to Apr. 2..| Mar. 17 to 25...... Mar. 8 to13......- Mar. 28 to Apr. 5. 
ANP Till Eperereyerer ye tera tare eal eye eerste on ete ope epe ales syats INOS WAKO ASG Aoee 
Ii Be ae a nc Wien GO Wet cas tooe Apt. 27 to May 104a.| May 10 to 13-......| May 15 to 18. 
LT Cte mere ee oe sence GT BUOSasssacoa AED HiT) Ooogcoced AEA) PHO) Wap ocaer July 6 to 7.¢ 
a 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. 
. eae 15 urees on the western section of the plat were not picked in April or May, but were picked on 
une 18 an : 
