BUD VAEIATIOlSr IN THE MARSH GEAPEFRUIT. 107 



are similar in appearance to those of the Marsh strain, but heavily 

 seeded; the only safe way to eliminate such fruits is by top-working 

 the trees of the seedy strains, using for this purpose buds selected 

 from desirable trees of the Marsh strain. 



Where fruits of undesirable strains are borne on particular limbs 

 in trees of the Marsh strain, they can be eliminated by cutting out 

 those limbs. An examination of the trees before picking will reveal 

 the presence of any limbs bearing poor or undesirable fruits. 



The Alternate-Bearing strain is usually not as valuable as the 

 regular-bearing Marsh strain. In order to stabilize and standardize 

 the grapefruit industry, regularity of production must be secured. 



mc N/GNfsr PMDi/cwG TRfrs .. _ _ ^ r/i^T lowrsr producwg rp^n 

 pfp cfA/r or A PAC/(fD Boxpfp rpff J/-^^-* pfpcfA/r or a PAcxro box psp rprr 



/83.S 



//2 



6/./ 



67.9 



96 



29.4 



88.3 



SO 



32.3 



97.8 



64 



40.0 



92.S 



48 



40.0 



88.8 



32 



50.6 



/7S.3 



24 



/47.S 



AVrPAGr TOTAl CROP 

 PrP TPCC 



7.92 PAC/Cf/? so^rs \ f>rpTRrc \ ^0/ PAC/<rD Boxrs 



2.79 PACKrp Boxrs OP \ mrMosrors/PABLr s/zrs \ /.f2 PAcxro soxrs op 

 3. 52 pcp crA/r or r/rr crop \ so, 64, and 48 \ 28./ prp cr/vr or mc crop 



633.6 PACKroBoxrs \Pf^oDucmj^^^oj^^wrAcprBASfs I s^o.aPAC^rDBOxa 



<t,c:c::>,o\ ACWAL VAlUr PrP ACPr \ ii7f>r af; 



p'^^^-3'^ 1 Druvfpro AT Tffr PACMA/e masr J "** '°^-^° 



P20922HP 



Fig. 13.— Average number of fruits of the various commercial sizes produced annually during the 6-year 

 period 1910 to 1915, inclusive, by the five highest and the five lowest yielding trees of Marsh grapefruit in 

 the investigational performance-record plat A in a grove planted in 1898. Tliis production is expressed 

 as percentages of a packed box calculated from the number of fruits of the different sizes contained in 

 a box. The percentage of most desirable sizes is also stated, and the production on the acre basis is 

 shown and its value calculated from the actual returns received for the fruit from this grove during the 

 6-year period. 



The advisability of eliminating from established orchards trees having 

 an alternate-season habit of production wiU depend on the amount 

 of this production over a period of several years. If the production 

 of the Alternate-Bearing trees is such as to be profitable, there is 

 some question as to the desirability of top-working old established 

 trees of this strain. If, however, the production of these Alternate- 

 Bearing trees is unprofitable, there is no question but that they should 

 either be removed and replaced by young trees of the Marsh strain, 

 or, preferably, top-worked with buds selected from heavy bearing 

 trees of the Marsh strain. Such trees, however, should never be 

 used as parent trees from which to take propagating wood, no matter 

 what their aggregate production may be. 



