| Texto completo | |
| Autor(es): Mostrar menos - |
Galindo, Fernando Shintate
;
Pagliari, Paulo Humberto
;
da Silva, Edson Cabral
;
Silva, Vinicius Martins
;
Fernandes, Guilherme Carlos
;
Rodrigues, Willian Lima
;
Oliveira Ceu, Elaine Garcia
;
de Lima, Bruno Horschut
;
Jalal, Arshad
;
Muraoka, Takashi
;
Buzetti, Salatier
;
Lavres, Jose
;
Minhoto Teixeira Filho, Marcelo Carvalho
Número total de Autores: 13
|
| Tipo de documento: | Artigo Científico |
| Fonte: | PLANTS-BASEL; v. 11, n. 14, p. 17-pg., 2022-07-01. |
| Resumo | |
This study was designed to investigate the effects of Azospirillum brasilense and Bradyrhizobium sp. co-inoculation coupled with N application on soil N levels and N in plants (total N, nitrate N-NO3- and ammonium N-NH4+), photosynthetic pigments, cowpea plant biomass and grain yield. An isotopic technique was employed to evaluate N-15 fertilizer recovery and derivation. Field trials involved two inoculations-(i) single Bradyrhizobium sp. and (ii) Bradyrhizobium sp. + A. brasilense co-inoculation-and four N fertilizer rates (0, 20, 40 and 80 kg ha(-1)). The co-inoculation of Bradyrhizobium sp. + A. brasilense increased cowpea N uptake (an increase from 10 to 14%) and grain yield (an average increase of 8%) compared to the standard inoculation with Bradyrhizobium sp. specifically derived from soil and other sources without affecting N-15 fertilizer recovery. There is no need for the supplementation of N via mineral fertilizers when A. brasilense co-inoculation is performed in a cowpea crop. However, even in the case of an NPK basal fertilization, applied N rates should remain below 20 kg N ha(-1) when co-inoculation with Bradyrhizobium sp. and A. brasilense is performed. (AU) | |
| Processo FAPESP: | 18/08485-7 - Manejo do nitrogênio em feijão-caupi, trigo e milho: efeitos na nutrição de plantas, produtividade de grãos e eficiência de uso do nitrogênio |
| Beneficiário: | Fernando Shintate Galindo |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |