Response of Phaseolus vulgaris to the Use of Growth-Promoting Microorganisms Associated with the Reduction of NPK Fertilization in Tropical Soils: Clayey Oxisol and Sandy Ultisol

Loiane Fernanda Romão de Souza, Nelson Câmara de Souza Júnior, Guilherme Carlos Fernandes, William Cesar Nishimoto Ito, Mariana Cristina Barbosa, Leilane Bernardes Freitas, Karina da Silva Souza, Lidiane dos Santos Alexandre, Mariana Bonini Silva, Edson Cabral da Silva, Orivaldo Arf, Marlene Cristina Alves (), Marcelo Carvalho Minhoto Teixeira Filho and Vagner do Nascimento
Additional contact information
Loiane Fernanda Romão de Souza: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Nelson Câmara de Souza Júnior: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Guilherme Carlos Fernandes: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
William Cesar Nishimoto Ito: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Mariana Cristina Barbosa: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Leilane Bernardes Freitas: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Karina da Silva Souza: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Lidiane dos Santos Alexandre: Department of Plant Protection, College of Agricultural and Technological Sciences (FCAT), São Paulo State University-UNESP, São Paulo 17915-899, Brazil
Mariana Bonini Silva: Department of Plant Protection, College of Agricultural and Technological Sciences (FCAT), São Paulo State University-UNESP, São Paulo 17915-899, Brazil
Edson Cabral da Silva: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Orivaldo Arf: Department of Phytotechnics, Food and Socio Economics, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Marlene Cristina Alves: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Marcelo Carvalho Minhoto Teixeira Filho: Department of Plant Health, Rural and Soil Engineering, Faculty of Engineering (FEIS), São Paulo State University-UNESP, Ilha Solteira 15385-000, Brazil
Vagner do Nascimento: Department of Plant Protection, College of Agricultural and Technological Sciences (FCAT), São Paulo State University-UNESP, São Paulo 17915-899, Brazil

Agriculture, 2024, vol. 15, issue 1, 1-21

Abstract: This research analyzed the effects of inoculation with Rhizobium tropici , combined with beneficial microorganisms, on the reduction of NPK fertilization and its impacts on common beans. Conducted in two types of soil (clayey Oxisol and sandy Ultisol), the experimental design was a randomized block design under a factorial scheme 4 × 4, with different combinations of inoculation ( Rhizobium tropici alone or in combination with Azospirillum brasilense , Bacillus subtilis , and Trichoderma harzianum ) and fertilization doses (0%, 33%, 66%, and 100% of the recommended dose). The results showed that inoculation with R. tropici , especially in combination with Trichoderma harzianum , increased nodule formation and improved agronomic parameters such as leaf chlorophyll, dry matter of the plant, number of pods, and grains. Co-inoculation with Azospirillum brasilense resulted in a significant increase in grain yield, particularly in clayey soil with 33% NPK. Inoculation with lower doses of NPK was sufficient for good yield, suggesting the feasibility of reducing the use of mineral fertilizers. This study indicates that soils with corrected fertility, in a no-tillage system, can contribute to the reduction of fertilizer use due to the cycling of organic matter and improvement of soil health. Additionally, the use of microorganisms is an effective ally for the sustainability of agroecosystems.

Keywords: co-inoculation; growth-promoting bacteria; common bean; Rhizobium tropici; Azospirillum brasilense; Bacillus subtilis; Trichoderma harzianum (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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