TITLE:
Improved Maize Growth in Condition Controlled by PGPR Inoculation on Ferruginous Soil in Central Benin
AUTHORS:
Olaréwadjou Amogou, Nadège Adoukè Agbodjato, Gustave Dagbénonbakin, Pacôme Agossou Noumavo, Haziz Sina, Assogba Abado Sylvestre, Marcel Yévèdo Adoko, Martial Nounagnon, Romain Glèlè Kakaï, Adolphe Adjanohoun, Lamine Baba-Moussa
KEYWORDS:
PGPR, PGPR, Inoculation, Growth, Biomass, Ferruginous Soil
JOURNAL NAME:
Food and Nutrition Sciences,
Vol.10 No.12,
December
31,
2019
ABSTRACT: The use of microbial technologies in agriculture is rapidly expanding
with the discovery of new bacterial strains effective in improving plant
growth. In this study, we tested and highlighted the efficacy of PGPR (Plant
Growth Promoting Rhizobacteria) alone or in a consortium on maize growth. For
this purpose, a greenhouse experiment was
carried out in pots containing sterilized ferruginous soil for 30 days. The
corn seeds of the EVDT 97 SRT C1 variety were inoculated with bacterial
suspensions of concentration 108 UFC/ml. The experimental device was
a random block of 16 three-repeat treatments. The incidence of PGPR
inoculated strains is assessed on the biomass growth and yield parameters of
maize. At the end of the trial, the results
showed that inoculation stimulated plant growth and development and resulted in
a significant increase in the height, diameter at the collar, leaf surface and
dry weight of aerial biomass of 20.15%, 21%, 32.77% and 37.73% respectively
compared to controls, especially in corn plants inoculated with B. thurengiensis + B. panthéthonicus + S. marcescens and Pseudomonas
cichorii + Pseudomonas
putida + Pseudomonas
syringae. These results show the potential of using these
rhizobacteria as biological inoculants to improve maize productivity in Benin.