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New Native Rhizobia Strains for Inoculation of Common Bean in the Brazilian Savanna

Fábio Martins Mercante, Auro Akio Otsubo, Osmar Rodrigues Brito


ABSTRACT Maximization of biological nitrogen fixation in the common bean (Phaseolus vulgaris L.) crop depends on the genetic characteristics related to the plant, the symbiotic efficiency of rhizobia, and environmental factors. The objective of this study was to evaluate the performance of rhizobia selected beforehand from Cerrado (Brazilian tropical savanna) soils in Mato Grosso do Sul. The experiments were conducted in 2007 in the municipalities of Aquidauana, Anaurilândia, Campo Grande, and Dourados, all located in the state of Mato Grosso […]

Agronomic and Economic Efficiency of Common-Bean Inoculation with Rhizobia and Mineral Nitrogen Fertilization

Bruno Lima Soares, Paulo Ademar Avelar Ferreira, Márcia Rufini, Fábio Aurélio Dias Martins, Dâmiany Pádua Oliveira, Ricardo Pereira Reis, [...]


ABSTRACT Management of biological nitrogen fixation in common bean still requires improvement. The objective of this study was to verify the compatibility of nitrogen fertilization with biological N2 fixation to increase common bean yield and profitability. Four field experiments were performed in four municipalities of Minas Gerais, Brazil, during the 2009 and 2010 winter crop season. The 2009 crop experiments were set up under a no-till system and the 2010 crop was conducted using conventional tillage. A randomized block experimental […]


Henrique José Guimarães Moreira Maluf, Emanuelle Mercês Barros Soares, Ivo Ribeiro da Silva, Júlio César Lima Neves, Lucas de Oliveira Guimarães Silva


ABSTRACT The sustainability of conservation farming systems is closely linked to return of nutrients to the soil through decomposition of crop residues. The aim of this study was to evaluate decomposition of crop residues and nutrient mineralization in soils with different textures over a 175-day incubation period. The experimental design consisted of a 6 × 4 × 5 factorial arrangement – six treatments, composed of four crop residues (corn, brachiaria, common bean, and Stylosanthes) and two controls, both without residues, […]


Luciana Fernandes de Brito, Rafael Sanches Pacheco, Benedito Fernandes de Souza, Enderson Petrônio de Brito Ferreira, Rosângela Straliotto, Adelson Paulo Araújo


Common bean (Phaseolus vulgaris L.) may benefit from biological N 2 fixation, but inconsistent responses of the crop to rhizobium inoculation indicate the need for supplemental mineral N fertilization. In this study, we aimed to evaluate the response of the common bean crop to rhizobium inoculation in association with supplemental mineral N in the Cerrado (Brazilian tropical savanna) and Atlantic Forest biomes. Four field experiments were carried out, two in Santo Antônio de Goiás (State of Goiás), one in Valença […]


Lorena Adriana de Gennaro, Zigomar Menezes de Souza, Laura Fernanda Simões da Silva, Miguel Cooper, Milton César Costa Campos


Agricultural management affects soil structure, modifying soil physical properties and soil water movement. The objective of this study was to evaluate the effects of no-tillage (NT) and conventional tillage (CT) on soil structure through physical properties and pore distribution in 2-D digital images. The study was conducted in an Oxisol with a randomized block design. Soil bulk density, soil macroporosity, mean weighted diameter (MWD), saturated hydraulic conductivity (SHC), and analysis of 2-D digital images (156.25 μm2 resolution) were evaluated at […]

Variability of root traits in common bean genotypes at different levels of phosphorus supply and ontogenetic stages

Roberto dos Santos Trindade, Adelson Paulo Araújo


Selection of common bean (Phaseolus vulgaris L.) cultivars with enhanced root growth would be a strategy for increasing P uptake and grain yield in tropical soils, but the strong plasticity of root traits may compromise their inclusion in breeding programs. The aim of this study was to evaluate the magnitude of the genotypic variability of root traits in common bean plants at two ontogenetic stages and two soil P levels. Twenty-four common bean genotypes, comprising the four growth habits that […]

Nutritional assessment of the irrigated common bean crop by the CND, DRIS, and sufficiency range methods

Fábio Luiz Partelli, Jairo Rafael Machado Dias, Henrique Duarte Vieira, Paulo Guilherme Salvador Wadt, Edmar Paiva Júnior


The common bean crop is of great importance for the State of Goiás, Brazil. However, information on its nutritional requirements is lacking for irrigated conditions. The aim of this study was to establish standard levels of leaf nutrients and assess the nutritional status of irrigated common bean in the Vale do Rio dos Bois region of the State of Goiás through the methods of sufficiency range (SR), compositional nutrient diagnosis (CND), and diagnosis and recommendation integrated system (DRIS), as well […]

Genotypic variability in seed accumulation of foliar-applied molybdenum to common bean

Rogério Faria Vieira, Trazilbo José de Paula Júnior, José Eustáquio de Souza Carneiro, Marina Viana Queiroz


The genotypic variability in molybdenum (Mo) accumulation in common bean seeds has been demonstrated in cases in which soil is the main Mo source, but this variability is yet unknown when Mo is foliar-applied. Therefore, seed Mo concentrations (SMoCc) and seed Mo contents (SMoCt) of 12 genotypes were determined in four experiments in the Zona da Mata, Minas Gerais, Brazil, in which plants were sprayed with 600 g ha-1 Mo. For comparison, two additional experiments without external Mo were conducted. […]

Nutrient extraction and exportation by nitrogen- fertilized common bean grown after different periods of no-tillage system establishment

Adelson Antonio Guidolin Perez, Rogério Peres Soratto, Natalia Politti Manzatto, Emerson de Freitas Cordova de Souza


Common bean grown in no-tillage (NT) systems has increased markedly in Brazil. Thus, to optimize the fertilizer recommendations, it is important to know the nutritional requirements of this crop when grown under new and established NT systems, which can change the nutrient availability and crop response to nitrogen (N) fertilization. The objective was to evaluate the extraction and exportation of nutrients by common bean as function of N fertilization on soil under new and established NT systems. The experiment was […]

Nutrient extraction and exportation by common bean cultivars under different fertilization levels: I – macronutrients

Rogério Peres Soratto, Adalton Mazetti Fernandes, Letícia Andriani dos Santos, André Luiz Gomes Job


The use of cultivars with a higher yield potential and the adoption of new technology have achieved high grain yields in common bean, which probably changed the demand for nutrients in this crop. However, there is almost no information about the periods of the cycle in which nutrients are most demanded at which quantities by the main cultivars. The objective of this study was to evaluate the macronutrient extraction and exportation by the common bean cultivars Pérola and IAC Alvorada, […]

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