Ensaio de desbaste de ramos inferiores do cafeeiro II
Data
1951-10
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Instituto Agronômico (IAC)
Resumo
Foi continuado o ensaio do desbaste dos ramos inferiores do cafeeiro, instalado na Estação Experimental Central de Campinas, em 1932. O ensaio compreende duas séries : a) desbastada ; b) não desbastada. Cada série se compõe de 5 repetições com 25 cafeeiros cada uma. A variedade em cultivo foi a Coffea arabica L. var. typica Cramer. A série desbastada foi mantida sem os ramos primários até uma altura de 50 cm do solo. Na série não desbastada não se interferiu de modo algum nessa parte da planta. As colheitas foram iniciadas em 1935. A série não desbastada produziu significativamente mais, no período todo examinado, isto é, em dezesseis safras (1935-1950). Não houve grande diferença no tamanho das sementes. A maturação foi um pouco apressada na série desbastada. O ensaio demonstra que não houve vantagem em se fazer esta operação.
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.
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.
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Citação
MENDES, J. E. T. Ensaio de desbaste de ramos inferiores do cafeeiro II. Bragantia, Campinas, v. 11, n. 10-12, p. 277-284, out./dez. 1951.