Methods of inoculation of plant growth-promoting rhizobacteria in specialty maize genotypes under organic agriculture system
Organic agriculture systems have the nutrients supplied by plant or animal by-products, bioinoculants, and compost-based products as earthworm composts and green manures. However, the quantitative and qualitative parameters of soil amendments depend on their sources, and soil amendments are general...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Eduem (Editora da Universidade Estadual de Maringá)
2022-05-01
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| Series: | Acta Scientiarum: Agronomy |
| Subjects: | |
| Online Access: | https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/54910 |
| _version_ | 1828810427309490176 |
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| author | Andréia de Oliveira Marcelo Akira Saito Alessandra Guedes Baleroni Robson Akira Matsuzaki Filipe Bertagna Amanda Tami Kuroda Colevate Carlos Alberto Scapim Leandro Simoes Azevedo Gonçalves |
| author_facet | Andréia de Oliveira Marcelo Akira Saito Alessandra Guedes Baleroni Robson Akira Matsuzaki Filipe Bertagna Amanda Tami Kuroda Colevate Carlos Alberto Scapim Leandro Simoes Azevedo Gonçalves |
| author_sort | Andréia de Oliveira |
| collection | DOAJ |
| description |
Organic agriculture systems have the nutrients supplied by plant or animal by-products, bioinoculants, and compost-based products as earthworm composts and green manures. However, the quantitative and qualitative parameters of soil amendments depend on their sources, and soil amendments are generally not sufficient to supply the nutritional requirements of maize crops. Moreover, specialty maize requires high levels of N. Thus, the aim of this study was to investigate specialty maize varieties supplied with two microbial inoculants applied in two inoculation methods. These factorial treatments were compared with their checks (varieties without inoculation), and the interaction among these factors was also investigated. The trials were carried out during the growing season in 2017–2018 in the State University of Maringá. The popcorn trial followed the randomized complete block design where the factorial 3 × 2 × 2 + 3 had five replications. The trial with white grits maize followed the same experimental design but the factorial scheme was 2 × 2 × 2 + 2 with three replications. Both trials had maize varieties and two species of microbial inoculants (Azospirillum brasilense and Methylobacterium sp.) applied in two inoculation methods, in the seeds and the foliar spray at V4 stage of plant development. The response traits were grain yield and the components of crop production. In both trials, we verified that the majority of the interactions among the factors was non-significant (p > 0.05), indicating the independence of these factors. Furthermore, the microbial inoculants had no beneficial effects on the traits. The possibility of a higher crop yield did not confirm the application of the inoculant in the stage V4. The organic compost may be the key point in mitigating the treatments with microbial inoculants due to the availability of N in the first stages of plant development. The traits also suggest the necessity of more trials about the influence of microbial inoculants on specialty maize production.
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| first_indexed | 2024-12-12T09:11:39Z |
| format | Article |
| id | doaj.art-922a950303814c1298ec0a5d8b392e63 |
| institution | Directory Open Access Journal |
| issn | 1679-9275 1807-8621 |
| language | English |
| last_indexed | 2024-12-12T09:11:39Z |
| publishDate | 2022-05-01 |
| publisher | Eduem (Editora da Universidade Estadual de Maringá) |
| record_format | Article |
| series | Acta Scientiarum: Agronomy |
| spelling | doaj.art-922a950303814c1298ec0a5d8b392e632022-12-22T00:29:30ZengEduem (Editora da Universidade Estadual de Maringá)Acta Scientiarum: Agronomy1679-92751807-86212022-05-0144110.4025/actasciagron.v44i1.54910Methods of inoculation of plant growth-promoting rhizobacteria in specialty maize genotypes under organic agriculture systemAndréia de Oliveira0Marcelo Akira Saito1Alessandra Guedes Baleroni2Robson Akira Matsuzaki3Filipe Bertagna4Amanda Tami Kuroda Colevate5Carlos Alberto Scapim6Leandro Simoes Azevedo Gonçalves7Universidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de MaringáUniversidade Estadual de Londrina Organic agriculture systems have the nutrients supplied by plant or animal by-products, bioinoculants, and compost-based products as earthworm composts and green manures. However, the quantitative and qualitative parameters of soil amendments depend on their sources, and soil amendments are generally not sufficient to supply the nutritional requirements of maize crops. Moreover, specialty maize requires high levels of N. Thus, the aim of this study was to investigate specialty maize varieties supplied with two microbial inoculants applied in two inoculation methods. These factorial treatments were compared with their checks (varieties without inoculation), and the interaction among these factors was also investigated. The trials were carried out during the growing season in 2017–2018 in the State University of Maringá. The popcorn trial followed the randomized complete block design where the factorial 3 × 2 × 2 + 3 had five replications. The trial with white grits maize followed the same experimental design but the factorial scheme was 2 × 2 × 2 + 2 with three replications. Both trials had maize varieties and two species of microbial inoculants (Azospirillum brasilense and Methylobacterium sp.) applied in two inoculation methods, in the seeds and the foliar spray at V4 stage of plant development. The response traits were grain yield and the components of crop production. In both trials, we verified that the majority of the interactions among the factors was non-significant (p > 0.05), indicating the independence of these factors. Furthermore, the microbial inoculants had no beneficial effects on the traits. The possibility of a higher crop yield did not confirm the application of the inoculant in the stage V4. The organic compost may be the key point in mitigating the treatments with microbial inoculants due to the availability of N in the first stages of plant development. The traits also suggest the necessity of more trials about the influence of microbial inoculants on specialty maize production. https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/54910green agriculture; popcorn; white grits maize; bioinoculants. |
| spellingShingle | Andréia de Oliveira Marcelo Akira Saito Alessandra Guedes Baleroni Robson Akira Matsuzaki Filipe Bertagna Amanda Tami Kuroda Colevate Carlos Alberto Scapim Leandro Simoes Azevedo Gonçalves Methods of inoculation of plant growth-promoting rhizobacteria in specialty maize genotypes under organic agriculture system Acta Scientiarum: Agronomy green agriculture; popcorn; white grits maize; bioinoculants. |
| title | Methods of inoculation of plant growth-promoting rhizobacteria in specialty maize genotypes under organic agriculture system |
| title_full | Methods of inoculation of plant growth-promoting rhizobacteria in specialty maize genotypes under organic agriculture system |
| title_fullStr | Methods of inoculation of plant growth-promoting rhizobacteria in specialty maize genotypes under organic agriculture system |
| title_full_unstemmed | Methods of inoculation of plant growth-promoting rhizobacteria in specialty maize genotypes under organic agriculture system |
| title_short | Methods of inoculation of plant growth-promoting rhizobacteria in specialty maize genotypes under organic agriculture system |
| title_sort | methods of inoculation of plant growth promoting rhizobacteria in specialty maize genotypes under organic agriculture system |
| topic | green agriculture; popcorn; white grits maize; bioinoculants. |
| url | https://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/54910 |
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