Data/hora: 25/05/2024 19:15:16

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 27/06/2017
Data da última atualização: | 27/06/2017
Autoria: | SOUZA, J. E. B. de; FERREIRA, E. P. de B.
Afiliação: | JOSE EDUARDO BARBOSA DE SOUZA, UNIVERSIDADE FEDERAL DE GOIÁS; ENDERSON PETRONIO DE BRITO FERREIRA, CNPAF.
Título: | Improving sustainability of common bean production systems by co-inoculating rhizobia and azospirilla.
Ano de publicação: | 2017
Fonte/Imprenta: | Agriculture, Ecosystems and Environment, v. 237, p. 250-257, 2017.
ISSN: | 0167-8809
DOI: | 10.1016/j.agee.2016.12.040
Idioma: | Inglês
Conteúdo: | Common bean is likely the most important grain legume on population feeding for developing countries worldwide. With a natural ability to establish symbiosis with rhizobia, the inoculation technology is poorly exploited, especially in co-inoculation with others plant growth promoting rhizobacteria. This work aimed to determine the agronomical performance of common bean co-inoculated with Rhizobium tropici and Azospirillum brasiliense. A set of seven field experiments were carried out for three consecutive years in experimental areas and, majorly in commercial farms. Treatments consisted of non-inoculated control (NI), N-fertilizer treatment (NfT), single inoculation of R. tropici (Rt), R. tropici + one dose of A. brasiliense on seed (Rt+Ab1s), R. tropici + two doses of A. brasiliense on seed (Rt+Ab2s), R. tropici + two doses of A. brasiliense sprayed on plants (Rt+Ab2p) and R. tropici + three doses of A. brasiliense sprayed on plants (Rt+Ab3p). Evaluations were based on the nodule number (NN), nodule dry weight (NDW), root dry weight (RDW), shoot dry weight (MSPA), grain yield (GY), relative grain yield to NfT treatment (RGY: NfT) and relative grain yield to Rt treatment. The average of seven field experiments showed an increase of about 9%, 25%, 35% and 31% in NN, NDW, RDW and SDW, respectively as compared to Rt treatment. These increases over nodulation and plant growth resulted in a GY about 3200 kg ha -1, representing an increase in GY of about 5% and 26% as compared to NfT and Rt treatments, respectively. The results indicate the feasibility of using rhizobia and azospirilla co-inoculation in commercial farms as an efficient technology in replacing N-fertilizers, helping to save expenses and preventing environmental risks.
Palavras-Chave: | Fixação nitrogênio; Plant-bacteria interaction.
Thesagro: | Feijão; Phaseolus vulgaris; Simbiose.
Thesaurus Nal: | Growth performance; Nitrogen fixation; Symbiosis.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (34792-1) - UPC - AP - DD - 2017 -  - 2017 - DIS