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Título
An Organic Fertilizer ‘Doped’ with a Bacillus Strain Improves Melon and Pepper Yield, Modifying the Rhizosphere Microbiome with Negligible Changes in the Bulk Soil Microbiome
Autor
Facultad/Centro
Área de conocimiento
Título de la revista
Agronomy
Número de la revista
11
Cita Bibliográfica
Ortiz-Liébana, N., Zotti, M., Barquero, M., & González-Andrés, F. (2022). An Organic Fertilizer ‘Doped’ with a Bacillus Strain Improves Melon and Pepper Yield, Modifying the Rhizosphere Microbiome with Negligible Changes in the Bulk Soil Microbiome. Agronomy, 12(11). https://doi.org/10.3390/AGRONOMY12112620
Editorial
MDPI
Fecha
2022
Resumen
[EN] Doped compost consists of compost inoculated with Bacillus siamensis SCFB3-1 that is
formulated in biochar and then mixed with the compost. The study objective was to analyze, at
field scale, the effect of doped compost on the melon and pepper yield and on the soil microbiome,
hypothesizing that the synergy between the components of doped compost confers additional benefits
to the crop. Two doses of compost (2 and 5 t/ha) and two doses of the inoculant (biochar+SCFB3-1)
with respect to the compost (3% and 6% w:w) were tested. The highest yield was observed for a
reduced dose of mineral fertilization (NPK -20%) with a compost dose of 2 t/ha with 6% of the
inoculant. Specifically, the yield increase compared with the control, which only received NPK, was
a 47% increase in melon and 28% in pepper. The microbiome of the bulk soil was not modified
by the doped compost, but the composition of the rhizosphere microbiome changed, increasing in
the abundance of Bacillus (the inoculated strain), but also changing the relative abundance of other
genera in the bacterial community. Future works will be focused on unravelling the possible effects
of phytohormones on the observed results.
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