Araujo I. D., Martins A. P., da Costa D. P., Silva A. O., da França R. F., Lira M. D. Jr., Duda G. P., Lima J. R. D., da Silva M. M., Araujo A. S. F., Hammecker Claude, Medeiros E. V. D. (2025). Biochar and plant growth-promoting bacteria boost chemical and biological properties of semiarid soil in cowpea. Soil Systems, 9 (1), p. 19 [11 p.].
Titre du document
Biochar and plant growth-promoting bacteria boost chemical and biological properties of semiarid soil in cowpea
Année de publication
2025
Auteurs
Araujo I. D., Martins A. P., da Costa D. P., Silva A. O., da França R. F., Lira M. D. Jr., Duda G. P., Lima J. R. D., da Silva M. M., Araujo A. S. F., Hammecker Claude, Medeiros E. V. D.
Source
Soil Systems, 2025,
9 (1), p. 19 [11 p.]
Plant growth-promoting bacteria (PGPB) are an effective tool for improving nutrients in agricultural systems; however, their efficacy depends on successful colonization in soils. To address this challenge, biochar has been identified as an effective material for enhancing soil ecosystem services and can serve as a protective for PGPB. However, the impact of biochar and PGPB on soil health indicators and plant growth remains poorly understood. This study aimed to evaluate the effects of biochar and PGPB on soil chemical and biological properties in cowpea. We used biochar from bean husk (BHB) and grape fermentation residue (GFB) and Bradyrhizobium elkanii USDA 76 (BRA), Burkholderia cepacia ATCC 25416 (PRB), or Rhizobium altiplani BR10423 (RHI). BHB and PRB stimulated cowpea growth, while GFB and PRB promoted soil phosphatase activity. Overall, different combinations of biochar and PGPR increased soil pH, phosphorus, potassium, organic carbon content, and urease activity, but did not affect microbial biomass carbon and beta-glucosidase activities. The biochars inoculated with the BRA showed the highest productivity. For example, plants subjected to the BRA + GFB treatment exhibited a 3.85-fold increase in productivity compared to the additional treatment that involved the use of commercial peat. The study demonstrated a positive effect of biochar and PGPB on soil enzymatic activity, nutrient content, and cowpea growth suggesting a sustainable alternative to chemical fertilizers, especially in poor soils. These findings highlight the potential of biochar as an environmentally sustainable carrier of PGPB while addressing the issue of agricultural waste reuse.
Plan de classement
Pédologie [068]
;
Sciences du monde végétal [076]
;
Biotechnologies [084]
Localisation
Fonds IRD [F B010093333]
Identifiant IRD
fdi:010093333
