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Improved maize growth in condition controlled by PGPR inoculation on ferruginous soil in central Benin

Food and Nutrition Sciences 2019年第12期10卷 1433-1451页

作者： Olarewadjou Amogou Nadege Adouke Agbodjato Gustave Dagbenonbakin Pacome Agossou Noumavo Haziz Sina Assogba Abado Sylvestre Marcel Yevedo Adoko Martial Nounagnon Romain Glele Kakai Adolphe Adjanohoun Lamine Baba-Moussa Laboratoire de Biologie et de Typage Moleculaire en Microbiologie Departement de Biochimie et de Biologie CellulaireFaculte des Sciences et TechniquesUniversite d’Abomey-CalaviCotonouBenin Centre de Recherches Agricoles d’Agonkanmey Institut National des Recherches Agricoles du BeninCotonouBenin Laboratoire de Microbiologie et des Technologies Alimentaires Departement de Biologie VegetaleFaculte des Sciences et TechniquesUniversite d’Abomey-CalaviCotonouBenin Laboratoire de Biomathematique et d’Estimation Forestiere Faculty of Agronomic SciencesUniversity of Abomey-CalaviCotonouBenin

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. 20.15%, 21%, 32.77% and 37.73% respectively compared to controls, especially in corn plants inoculated with B. thurengiensis;B.thurengiensis B.panthethonicus- S.marcescens et Pseudomonas cichorii- Pseudomonas. putida- Pseudomonas syringae. These results show the potential of using these rhizobacteria as biological inoculants to improve maize productivity in Benin.

关键词： PGPR PGPR Inoculation Growth Biomass ferruginous soil

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Applying Rhizobacteria on Maize Cultivation in Northern Benin:Effect on Growth and Yield

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Agricultural Sciences 2019年第6期10卷 763-782页

作者： Olaréwadjou Amogou Gustave Dagbénonbakin Nadège Adoukè Agbodjato Pacome Agossou Noumavo Kolawolé Valère Salako Marcel Yévèdo Adoko Romain Glèlè Kakai Adolphe Adjanohoun Lamine Baba-Moussa Laboratoire de Biologie et de Typage Moléculaire en Microbiologie Département de Biochimie et de Biologie Cellulaire/ Faculté des Sciences et Techniques/ Université d’Abomey-Calavi/05BP 1604 Cotonou Bénin Centre de Recherches Agricoles d’Agonkanmey Institut National des Recherches Agricoles du Bénin Cotonou Bénin Laboratoire de Microbiologie et des Technologies Alimentaires Département de Biologie Végétale/ Faculté des Sciences et Techniques/ Université d’Abomey-Calavi/Cotonou Bénin Laboratoire de Biomathématique et d’estimation forestière Faculty of Agronomic Sciences University of Abomey-Calavi 04BP1525 Bénin

The aim of the study was to investigate the effects of five plant growth-promoting rhizobacteria (PGPR) (Bacillus panthothenicus;Pseudomonas Cichorii;Pseudomonas Putida;Pseudomonas syringae and Serratia marcescens) on the growth and yield of maize on a ferruginous soil under field condition. Maize seeds were inoculated with 10 ml of bacterial suspension. Study was conducted in a completely randomized design with fifteen treatments and three replicates. A half-dose of recommended (13, 17, 17 kg?ha?1) NPK was applied 15 days after emergence. The results show that the Serratia marcescens + 50% NPK treatment yielded the best results for height, fresh underground biomass, dry aboveground biomass, dry underground biomass, and grain yield with respective increases of 41.09%, 217.5%, 213.34%, 93.82%, and 39.05% compared to the control. Maximum stem diameter (increases of 49.65%) was recorded in the plants treated with 100% NPK (full dose NPK) while the highest leaf area (466.36 ± 9.57 cm2), obtained on plant treated with Pseudomonas putida + 50% NPK was 32.08% greater than in the non-inoculated control. Our results suggest the use of these rhizobacteria as biological fertilizers for enhancing the growth and maize seed yield in ferruginous soil in the North of Benin.

关键词： Rhizobacteria PGPR ferruginous soil Corn Growth Yield

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