Common bean yield and zinc use efficiency in association with diazotrophic bacteria co-inoculations

• Autor(a) principal: Jalal, Arshad [UNESP]
• Data de Publicação: 2021
• Outros Autores: Galindo, Fernando Shintate, Boleta, Eduardo Henrique Marcandalli [UNESP], da Silva Oliveira, Carlos Eduardo [UNESP], Dos Reis, André Rodrigues [UNESP], Nogueira, Thiago Assis Rodrigues [UNESP], Moretti Neto, Mário João [UNESP], Mortinho, Emariane Satin [UNESP], Fernandes, Guilherme Carlos [UNESP], Teixeira Filho, Marcelo Carvalho Minhoto [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.3390/agronomy11050959; http://hdl.handle.net/11449/206389
• topic: Diazotrophic bacteria; Phaseolus vulgaris L; Zinc fertilization; Zn biofortification; Zn uptake

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.