The experiment, begun at the Central Experiment Station at Campinas in 1932, on the pruning of the lower branches of coffee plants, has been continued. The trial contains two series, a) pruned and b) not pruned. Each series consists of five replicates, each with 25 coffee plants. The variety is Coffea arabica L. var. typica Cramer. The pruned trees were kept free from primary branches to a height of 50 cm. The unpruned trees were left entirely untouched in this region. Harvesting began in 1935. The unpruned trees have yielded significantly better (P = 5%) over the period of the 16 years of the trial (1935-1950). There was no great difference in size of seeds. Ripening was advanced a little in the pruned trees. The experiment showed that there was no advantage to be gained by pruning ; on the contrary, the operation appears to be prejudicial to the yield.