Título:	Yield, foliar concentration, and efficiency of extractant solutions with boron application in a Xanthic Ferralsol cultivated with banana in Central Amazon.
Autoria:	MOREIRA, A. CASTRO, C. de FAGERIA, N. K.
Afiliação:	ADONIS MOREIRA, CPPSE; CESAR DE CASTRO, CNPSo; NAND KUMAR FAGERIA, CNPAF.
Ano de publicação:	2009
Referência:	In: INTERNATIONAL PLANT NUTRITION COLLOQUIUM 16., 2009, Davis. Proceedings... Davis: University of California, 2009.
Páginas:	9 p.
Conteúdo:	Boron is known to play important role in the structure of cell wall, membranes, and membrane-associated functions in plants. In soil, the hot water B extraction method has been extensively used, however, difficulties with this procedure result in low accuracy and precision of extraction of available boron (B) in soil. The objective of this study was to evaluate the Yield, foliar concentration, and efficiency of B extracting solutions and the effect of B fertilization on B uptake in banana leaves and fruits, subgroup Cavendish (AAA), cultivated in a Xanthic Ferralsol (dystrophic Yellow Latosol), in the Amazonas State, Brazil. The experimental design was a completely randomized split plot, comprising four boron rates (0, 4, 8, and 12 kg ha-1), and two harvest cycles (subtreatments), with four replicates. Available boron was determined with seven extractant solutions: Mehlich 1, Mehlich 3, hot water, HCl 0.05 mol L-1, HCl 0.1 mol L-1, HCl 5.0 mol L-1 and KCl 1.0 mol L-1. The application of B fertilizer increased the yield and concentration of B in leaves and fruits. Hot water and KCl 1.0 mol L-1 were the most efficient extracting solutions for the determination of available B in soil. The application of 3.4 kg B ha-1 in first cycle and 1.3 kg B ha-1 in second cycle guarantees an adequate nutritional status in banana plants.
Thesagro:	Banana Boro Microelemento Fertilizante
Palavras-chave:	Amazonas
Notas:	Paper 1054.
Tipo do material:	Artigo em anais e proceedings
Acesso:	openAccess
Aparece nas coleções:	Artigo em anais de congresso (CNPAF)