SORGHUM GENOTYPES RESPONSE TO INOCULATION WITH PHOSPHATE SOLUBILIZING BACTERIA

Authors

  • BIANCA BRAZ MATTOS Embrapa Solos
  • IVANILDO EVÓDIO MARRIEL Embrapa Milho e Sorgo
  • SYLVIA MORAIS DE SOUSA Embrapa Milho e Sorgo
  • UBIRACI GOMES DE PAULA LANA Embrapa Milho e Sorgo
  • ROBERT EUGENE SCHAFFERT Embrapa Milho e Sorgo
  • ELIANE APARECIDA GOMES Embrapa Milho e Sorgo https://orcid.org/0000-0001-8488-3936
  • CHRISTIANE ABREU DE OLIVEIRA PAIVA Embrapa Milho e Sorgo

DOI:

https://doi.org/10.18512/rbms2020v19e1177

Keywords:

Sorghum bicolor, phosphate solubilizing microorganisms (PSB), rock phosphate, plant growth-promoting bacteria (PGPB).

Abstract

Sorghum bicolor adapts to phosphorus (P) deficient soils through mechanisms that contribute to its absorption and solubilization, including the association with microorganisms. The direct application of rock phosphate (RP) followed by the inoculation of phosphate solubilizing bacteria (PSB) is a sustainable alternative for P supply to the crops. The aim of this study was to evaluate the effect of PSB inoculation on two sorghum genotypes with different P responses (BR007 - efficient and responsive and SC283 - efficient and non-responsive) cultivated in soil fertilized with RP and triple superphosphate (TSP). The sorghum genotypes were inoculated separately with the Bacillus strains efficient in P solubilization, B116 and B70, and cultivated in different P fertilization sources (TSP, RP, ½TSP + ½RP). The results suggested that the inoculation response was dependent on sorghum genotype, P source and microbial strain. Inoculation of the genotype BR007, significantly increased root biomass and P content under greenhouse, as well as yield and grain P content in the field but no effect was observed on genotype SC283. The use of PSB as bioinoculants in combination with RP is a promising alternative to reduce the use of synthetic fertilizers, contributing for the sustainable sorghum production.

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Published

2020-11-15

How to Cite

MATTOS, B. B., MARRIEL, I. E., DE SOUSA, S. M., LANA, U. G. D. P., SCHAFFERT, R. E., GOMES, E. A., & PAIVA, C. A. D. O. (2020). SORGHUM GENOTYPES RESPONSE TO INOCULATION WITH PHOSPHATE SOLUBILIZING BACTERIA. REVISTA BRASILEIRA DE MILHO E SORGO, 19, 14. https://doi.org/10.18512/rbms2020v19e1177

Issue

Vol. 19 (2020)

Section

Scientific Paper

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