2022
DOI: 10.1590/1983-40632022v5273419
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Reinoculation of topdressing Rhizobium tropici combined or not with Azospirillum brasilense in common bean

Abstract: The nitrogen (N) supplying capacity of common bean plants through biological fixation is still questioned by farmers. This study aimed to investigate the nodulation, growth and production of common bean cultivars under field conditions, when subjected to topdressing Rhizobium tropici reinoculation applied at different rates, combined or not with Azospirillum brasilense. A randomized blocks design was used, in a 2 × 4 × 2 + 2 factorial arrangement, with four replications. The treatments consisted of two common … Show more

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(2 citation statements)
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“…Recently, some research results have been unanimous in stating that the reinoculation procedure with R. tropici in the common bean crop, conducted close to flowering, promotes the reinvigoration of the fixative activity of the population of bacteria inoculated at sowing [39][40][41]49]. In this study, it can be noted that the morphological and agronomic analyzes obtained similar results, but with the inclusion of other products in the application, such as A. brasilense in association with Mo/Co, which ensured the achievement of high levels of grain yield, equivalent to the use of mineral nitrogen source.…”
Section: Agronomic Analyzesmentioning
confidence: 99%
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“…Recently, some research results have been unanimous in stating that the reinoculation procedure with R. tropici in the common bean crop, conducted close to flowering, promotes the reinvigoration of the fixative activity of the population of bacteria inoculated at sowing [39][40][41]49]. In this study, it can be noted that the morphological and agronomic analyzes obtained similar results, but with the inclusion of other products in the application, such as A. brasilense in association with Mo/Co, which ensured the achievement of high levels of grain yield, equivalent to the use of mineral nitrogen source.…”
Section: Agronomic Analyzesmentioning
confidence: 99%
“…In addition, nodules that appear late with the advancement of the crop cycle can contribute in a restricted way to crop nutrition and increase yield [38,39]. In this way, the reinoculation in topdressing made directly in the soil can renew the rhizobian population effectively in incorporating N 2 [39,40], associating the application of A. brasilense [41] and the Mo/Co micronutrients, exactly in a phase in which the bean crop has a greater nutritional demand. However, the effect of the association of these products applied to bean cultivation is little investigated by scientific research.…”
Section: Introductionmentioning
confidence: 99%