Influência de diferentes níveis de sombreamento sobre o crescimento de mudas de cafeeiro (Coffea arabica L.)
Data
2003-01
Título da Revista
ISSN da Revista
Título de Volume
Editor
Editora UFLA
Resumo
Com o presente trabalho objetivou-se de- terminar o melhor processo de formação de mudas em diferentes níveis de sombreamento. O experimento foi conduzido no Setor de Cafeicultura do Departamento de Agricultura da UFLA, onde mudas de cafeeiro (Coffea arabica L.)foram formadas sob quatro diferentes tipos de luminosidade, sendo: em pleno sol e sob sombrites, com 30%, 50% e 90% de sombreamento. Os tratamen- tos foram dispostos em um delineamento com blocos casualisados, sendo quatro o número de blocos. O ex- perimento foi conduzido até que as mudas atingissem o terceiro-quarto pares de folhas. As avaliações constituí- ram as seguintes análises de crescimento: altura, diâme- tro de caule, número de pares de folha, peso seco de ra- íz, peso seco de parte aérea e área foliar. Concluiu-se que para as características de crescimento analisadas, as mudas sob sombrite com 50% de sombreamento foram melhores, seguidas daquelas com 90%, 30% e pleno sol.
The present work aimed to determine the best shading levels for the growth of coffee seedlings. The experiment was carried out at the Agriculture Department of the Federal University of Lavras. Coffee seedlings (Coffea arabica L.) were grown under four shading levels: seedlings in full sunshine, and under 30%, 50%, and 90% shading. The treatments were arranged in a randomized block design, whith four replications. The experiment was run to the third/fourth leaf pair. Afterwards, the following analyses were performed: height, stem diameter, number of leaf pairs, root dry weight, shoot dry weight, and leaf area. Results showed the seedlings develop best under 50% shading, then 90 and 30% shading, and lastly under full sunshine.
The present work aimed to determine the best shading levels for the growth of coffee seedlings. The experiment was carried out at the Agriculture Department of the Federal University of Lavras. Coffee seedlings (Coffea arabica L.) were grown under four shading levels: seedlings in full sunshine, and under 30%, 50%, and 90% shading. The treatments were arranged in a randomized block design, whith four replications. The experiment was run to the third/fourth leaf pair. Afterwards, the following analyses were performed: height, stem diameter, number of leaf pairs, root dry weight, shoot dry weight, and leaf area. Results showed the seedlings develop best under 50% shading, then 90 and 30% shading, and lastly under full sunshine.
Descrição
Palavras-chave
Mudas, Pleno sol, Crescimento, Coffea arabica
Citação
PAIVA, L. C; GUIMARÂES, R. J; SOUZA, C. A. S. Influência de diferentes níveis de sombreamento sobre o crescimento de mudas de cafeeiro (Coffea arabica L.). Ciência e Agrotecnologia, Lavras, v. 27, n. 1, p. 134-140, jan./fev. 2003.