EFFECT OF TOPPIXG OX YIELD OF COFFEE 5 
The yield of the trees was recorded over a 10-vear period. 1912- 
1921, the first record being taken at a little less than two years after 
the first pruning. The depressing effect on production exercised by 
severe pruning or topping was less evident in the early years of the 
test than later. In the three-year period, 1912-1914. both the trees 
Fig. 3. — Topped at 6 feet December, 1910, and photographed August, 1914 
which were held to a single trunk and those which were topped at 
6 feet produced each year within 10 per cent of the production of 
the unpruned trees. Table 1 shows the average annual production 
of coffee cherries per tree as affected bv pruning for the period 
1912-1921. 
