8 
BULLETIN 3 2, PORTO RICO EXPERIMENT STATION 
mary laterals. If the 
tree is topped and 
these new uprights or 
suckers are removed 
altogether, the growth 
of secondary laterals is 
forced and future crop 
production is from 
them rather than from 
primary laterals, with 
a resultant curtailment 
of crop. The develop- 
ment of new uprights 
is essential for a maxi- 
mum crop. Although 
in the test recounted 
the wholly unpruned 
trees gave the highest 
production, the infer- 
ence that no pruning 
is advisable should not 
be made. Ordinarily, 
suckers are produced 
in such numbers as to 
make the removal of 
some of them advan- 
tageous to the best 
development of the 
tree. The strongest 
and best-located suck- 
ers well distributed 
over the tree should be 
left. The removal of 
the weaker suckers and 
those which crowd the 
better ones aids the development of the latter. Each tree presents an 
individual problem, and the number of suckers Avhich should be left 
varies with the development and condition of the tree. 
Fig. 
/S/S 
/S20 
/S2/ 
/&S-/&2/ 
-Average annual production of coffee cherries 
per tree as affected by pruning 
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