BUD VARIATION" IN" THE MARSH GRAPEFRUIT. 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 
m trees of the Marsh strain, they can be eliminated by cutting out 
those limbso 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. 
P//P M/GttCST PRODUC/NG TRPPS - /7 - r fZV£ LOWPJT PRODUC/HG PRPPS 
PPR CPA/P OP A PACXPD BOX PPR TRPP *'*** PPR CPA/P OP A PACXPD BOX PPR TRPP 
Z83.5 //2 6/J 
96 23.4 
80 32.3 
64 40.0 
48 40.0 
32 50.6 
24 /47.S 
7.32 PACXPP BOXPS [^^^rR^TRPP^^ ! 40/ PACKPD BCXPS 
2.79 PACKPD BOXPS OP \ T/iP MOSP.DPS/RABLP S/ZPS } /./2 PACXPD BQXPS OP 
3. 52 PPR CPA/P OP TffP CROP I 80, 64, AND 48 \ 28 J RPR CPA/P OP PHP CROP 
633.6 PACWBOXtrS \'*OWCTWON ' WPACRP BAS/S J SJ , a8 PACW SOXa 
#/co „ ( ACTUAL VALUP RPR ACRP 1 * 7 or a* 
p/SSS.J*' | 0£i/)/£MD AT TffT PACK/NG HOUSC J * /O>wo 
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. This 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 will 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. 
