Work

Does coinoculation with bradyrhizobia and cyanobacteria improve groundnut growth and yield?

Year: 2024

Type: article

Abstract: Summary Groundnut plants can obtain N from N2 fixation via symbiosis with rhizobia, and inoculation with selected strains can improve grain yields. We report the results of four field experiments carried out under subtropical conditions to confirm whether microbial inoculants can improve groundnut performance through the effects of single inoculation with Bradyrhizobium arachidis (SEMIA6144), coinoculation with Arthrospira platensis (IPR7059) or Synechocystis sp. (IPR7061), or N fertilization with 100 kg ha-1 N on plant growth, nodulation, N accumulation in tissues, grain protein concentration (GPC), and grain yield. There were no effects of inoculation treatment or N fertilizer on shoot or root dry weight. In clayey soil, coinoculation with B. arachidis and cyanobacteria increased grain productivity by an average of 19% compared to that in the noninoculated control. In this clayey soil with a higher P content, regardless of whether coinoculated with B. arachidis or cyanobacteria or single inoculated, grain productivity was 16% greater on average than that resulting from N fertilizer addition. In conclusion, the success of rhizobial inoculation in groundnuts is dependent on the soil, probably due to P limitation and weather conditions.

Source: Experimental Agriculture

DOI: 10.1017/s0014479723000285

Authors: Diva Souza Andrade, Gisele Milani Lovato, Glaciela Kaschuk, Mariangela Hungria

Institutions: Instituto Agronômico do Paraná, Universidade Federal do Paraná, Embrapa Soja

Language: English

Topic: Legume Nitrogen Fixing Symbiosis

Subfield: Plant Science

Field: Agricultural and Biological Sciences

Domain: Life Sciences

SDG: Zero hunger

Open Access status: green

Funders: Conselho Nacional de Desenvolvimento Científico e Tecnológico, Petrobras