12 BULLETIN 28, PORTO RICO EXPERIMENT STATION. 
As long as disease is present on the plantation the coffee grower 
will have to exercise diligent and unremitting care to produce healthy 
coffee. As soon as it is noticed that disease has reentered a cleared 
section immediate steps should be taken to eradicate it. This can be 
done either by picking off the diseased leaves and those near and be- 
low them or by destroying the branches or even the tree and near-by 
growth, depending upon the degree of infection. 
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