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Revista Brasileira de Ciência do Solo

On-line version ISSN 1806-9657

Abstract

HEINRICHS, Reges; MOREIRA, Adônis; FIGUEIREDO, Paulo Alexandre Monteiro de  and  MALAVOLTA, Eurípedes. Soil chemical atributes and common bean yield as affected by lime and manganese rates. Rev. Bras. Ciênc. Solo [online]. 2008, vol.32, n.3, pp.1157-1164. ISSN 1806-9657.  http://dx.doi.org/10.1590/S0100-06832008000300024.

Common bean is one of the most important staples in Brazil. The objective of this study was to evaluate the common bean cv. Pérola yield and changes in soil chemical attributes as influenced by liming and manganese rates. The experiment was carried out in pots containing dystrophic Red Yellow Latosol (Oxisol). Treatments consisted of a 2 x 6 factorial combination of two limestone (CO3 and MgCO3 in a 3:1 molar ratio) rates, calculated to increase base saturation to 50 and 70 %, respectively, and six Mn rates (0, 20, 40, 60, 80 and 100 mg kg-1), using MnSO4.H2O as source. There were three repetitions. Results showed that a higher base saturation reduced leaf Mn concentration, but soil Mn concentration after harvest was not altered. The soil Mn concentration sufficient to reach the maximum grain yield was similar for both 50 and 70 % base saturation, but the doses to reach such critical soil concentration were 28 and 57 mg dm-3, respectively.

Keywords : Phaseolus vulgaris; manure; plant nutrition; base saturation.

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