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BIBTEX RIS

Common Bean Yield and Zinc Use Efficiency in Association with Diazotrophic Bacteria Co-Inoculations

2021; Multidisciplinary Digital Publishing Institute; Volume: 11; Issue: 5 Linguagem: Inglês

10.3390/agronomy11050959

ISSN

2073-4395

Autores

Arshad Jalal, Fernando Shintate Galindo, Eduardo Henrique Marcandalli Boleta, Carlos Eduardo da Silva Oliveira, André Rodrigues dos Reis, Thiago Assis Rodrigues Nogueira, Mário João Moretti Neto, Emariane Satin Mortinho, Guilherme Carlos Fernandes, Marcelo Carvalho Minhoto Teixeira Filho,

Tópico(s)

Phytase and its Applications

Resumo

Enrichment of staple food with zinc (Zn) along with solubilizing bacteria is a sustainable and practical approach to overcome Zn malnutrition in human beings by improving plant nutrition, nutrient use efficiency, and productivity. Common bean (Phaseolus vulgaris L.) is one of a staple food of global population and has a prospective role in agronomic Zn biofortification. In this context, we evaluated the effect of diazotrophic bacterial co-inoculations (No inoculation, Rhizobium tropici, R. tropici + Azospirillum brasilense, R. tropici + Bacillus subtilis, R. tropici + Pseudomonas fluorescens, R. tropici + A. brasilense + B. subtilis, and R. tropici + A. brasilense + P. fluorescens) in association with soil Zn application (without and with 8 kg Zn ha−1) on Zn nutrition, growth, yield, and Zn use efficiencies in common bean in the 2019 and 2020 crop seasons. Soil Zn application in combination with R. tropici + B. subtilis improved Zn accumulation in shoot and grains with greater shoot dry matter, grain yield, and estimated Zn intake. Zinc use efficiency, recovery, and utilization were also increased with co-inoculation of R. tropici + B. subtilis, whereas agro-physiological efficiency was increased with triple co-inoculation of R. tropici + A. brasilense + P. fluorescens. Therefore, co-inoculation of R. tropici + B. subtilis in association with Zn application is recommended for biofortification and higher Zn use efficiencies in common bean in the tropical savannah of Brazil.

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