Initial vegetative growth of coffee plants submitted to foliar spraying of Paclobutrazol

Authors

  • Lucialdo Oliveira d’Arêde Professor do Instituto Federal de Educação, Ciência e Tecnologia do Amazonas (IFAM)
  • Sylvana Naomi Matsumoto Universidade Estadual do Sudoeste da Bahia
  • Jerffson Lucas Santos UESB, PROGRAMA DE PÓS GRADUAÇÃO EM AGRONOMIA
  • Anselmo Eloy Silveira Viana UESB/DEPARTAMENTO DE FITOTECNIA E ZOOTECNIA
  • Paula Acássia Silva Ramos CAPES/PROGRAMA DE PÓS GRADUAÇÃO EM AGRONOMIA DA UESB

Keywords:

Coffea arabica, growth retardants, triazole

Abstract

The objective of this study was evaluate the initial vegetative growth of plants cv. CatuaíVermelho IAC 144 submitted to foliar spraying of four solutions concentrations (250, 500, 750 and 1000 mg L-1) of pacloblutrazol (PBZ) and a control. The plants were cultivated in a greenhouse, in a randomized blocks experimental design, with five treatments and four replicates, evaluated at 120 days after PBZ application. The data were subjected to general and regression analysis of variance. All of morphological characteristics were affected by PBZ, with growth reduction of the coffee crown and lifting the root dry weight in comparison to the control plants. PBZ results in elevation of the SPAD index, xylem water potential, net photosynthesis rate and carboxylation efficiency of coffee plants. Net photosynthesis rate was affected by carboxylation efficiency, and transpiration was associated with greater water availability. The PBZ changes the relationship between the shoot and root growth, increasing the growth of roots and optimizes the relations of leaf gas exchange, due to elevation of plant water status.PBZ effects in morphological characteristics in initial growth of coffee plants are more evident in comparison to physiological alterations.

Author Biographies

Lucialdo Oliveira d’Arêde, Professor do Instituto Federal de Educação, Ciência e Tecnologia do Amazonas (IFAM)

Professor do Instituto Federal de Educação, Ciência e Tecnologia do Amazonas (IFAM), graduado em Engenharia Agronômica e Mestre em Fitotecnia pela Universidade Estadual do Sudoeste da Bahia (UESB). Atuando na área de Fisiologia de Plantas Cultivadas, principalmente nos seguintes temas: fitorreguladores, arborização em cafezais e ecofisiologia vegetal.

Sylvana Naomi Matsumoto, Universidade Estadual do Sudoeste da Bahia

Possui graduação em Engenharia Agronômica pela Universidade de São Paulo (1985), mestrado em Agronomia (Horticultura) pela Universidade Estadual Paulista Júlio de Mesquita Filho (1988) e doutorado em Ciências Agrárias (Fisiologia Vegetal) pela Universidade Federal de Viçosa (1999). Atualmente é professor adjunto da Universidade Estadual do Sudoeste da Bahia. Tem experiência na área de Agronomia, com ênfase em Fisiologia de Plantas Cultivadas, atuando principalmente nos seguintes temas: arborização em cafezais e ecofisiologia vegetal

Jerffson Lucas Santos, UESB, PROGRAMA DE PÓS GRADUAÇÃO EM AGRONOMIA

Graduado em Engenharia Agronômica (2012), Mestre (2014) e Doutorando (2014-2017) em Agronomia, área de Concentração Fitotecnia, pela Universidade Estadual do Sudoeste da Bahia-UESB. Formado em Técnico em Agropecuária pela Escola Agrotécnica Federal de Salinas-MG, (2006). Foi bolsista de iniciação científica pela Fundação de Amparo à Pesquisa do Estado da Bahia-FAPESB por 2 anos e 1 ano bolsista PIBIC/CNPq. Atualmente é Bolsista pela Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES). Tem experiência na área de agronomia, com ênfase em fisiologia vegetal, produção e tecnologia de sementes, manejo do cafeeiro e fruticultura. 

Anselmo Eloy Silveira Viana, UESB/DEPARTAMENTO DE FITOTECNIA E ZOOTECNIA

possui graduação em Engenharia Agronômica pela Universidade Federal da Paraíba (1984), especialização em Experimentação Agropecuária pela UNESP - Universidade Estadual Paulista Júlio de Mesquita Filho (1989), mestrado em Fitotecnia (Produção Vegetal) pela Universidade Federal de Viçosa (1995) e doutorado em Fitotecnia (Produção Vegetal) pela Universidade Federal de Viçosa (1999). Atualmente é professor titular da Universidade Estadual do Sudoeste da Bahia. Tem experiência na área de Agronomia, com ênfase em Manejo e Tratos Culturais, atuando principalmente nos seguintes temas: fitotecnia, tratos culturais, mandioca e planejamento experimental. cafeeiro e fruticultura. 

 

Paula Acássia Silva Ramos, CAPES/PROGRAMA DE PÓS GRADUAÇÃO EM AGRONOMIA DA UESB

Possui graduação em Engenharia Agronômica pela Universidade Estadual do Sudoeste da Bahia (2004) e Mestrado em Fitotecnia (Produção Vegetal) pela Universidade Federal de Viçosa (2006) e Doutorado em Fitotecnia (Pós-colheita) pela Universidade Federal de Viçosa (2011). Pós-doutorado em Plantas Ornamentais pela UFV (CAPES). Bolsista PNPD UESB, professora colaboradora do Programa de Pós-graduação em Agronomia. Tem experiência na área de Fisiologia Pós-colheita e Agronomia, com ênfase em Produção de grandes culturas, Pós-Colheita de Frutas e Hortaliça e Plantas ornamentais, atuando principalmente nos seguintes temas: enzimas, açucares, amido, ambiente modificado, hidroponia, alface, pitaya, mamão,salsinha, batata, batata-doce,urucum,mandioca.

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Published

2017-11-28

How to Cite

D’ARÊDE, L. O.; MATSUMOTO, S. N.; SANTOS, J. L.; VIANA, A. E. S.; RAMOS, P. A. S. Initial vegetative growth of coffee plants submitted to foliar spraying of Paclobutrazol. Coffee Science - ISSN 1984-3909, [S. l.], v. 12, n. 4, p. 451–462, 2017. Disponível em: https://coffeescience.ufla.br/index.php/Coffeescience/article/view/1311. Acesso em: 25 feb. 2024.

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