The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage Species
Cover crops can be used to accelerate the solubilization process of low-solubility fertilizers; thus, the aim of this study was to evaluate the potential of grasses in solubilizing potassium from phonolite rock powder. With a 2 × 5 factorial scheme, two doses of phonolite rock powder, equivalent to...
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MDPI AG
2024-01-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/13/2/199 |
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| author | Alaor Ribeiro da Rocha Neto Renato de Mello Prado Mara Cristina Pessôa da Cruz |
| author_facet | Alaor Ribeiro da Rocha Neto Renato de Mello Prado Mara Cristina Pessôa da Cruz |
| author_sort | Alaor Ribeiro da Rocha Neto |
| collection | DOAJ |
| description | Cover crops can be used to accelerate the solubilization process of low-solubility fertilizers; thus, the aim of this study was to evaluate the potential of grasses in solubilizing potassium from phonolite rock powder. With a 2 × 5 factorial scheme, two doses of phonolite rock powder, equivalent to 0 and 8 t ha<sup>−1</sup>, were combined with four grass species (<i>Urochloa ruziziensis</i>, <i>U. decumbens</i>, <i>U. humidicola</i>, and <i>Andropogon gayanus</i>), besides a control treatment without any cover crop. The dry matter production of the aerial parts of the plants was evaluated at days 40 and 70 post-emergence, and then the concentration of potassium in the plants and the soil was evaluated (exchangeable, non-exchangeable, structural, and total potassium contents). In the soil, the phonolitic rock powder increased the exchangeable, non-exchangeable, structural, and total K contents, favoring the absorption of K and the production of the dry mass of the three <i>Urochloa</i>, but <i>U. decumbens</i> stood out because it promoted greater availability of K in the system compared to the cultivation of other plant species. This research proposes the inclusion of <i>U. decumbens</i> in production systems that receive phonolitic rock, constituting a sustainable strategy to improve its agronomic efficiency. |
| first_indexed | 2024-03-08T09:49:13Z |
| format | Article |
| id | doaj.art-e9b6497e4e2346a29b953dea619c3536 |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-08T09:49:13Z |
| publishDate | 2024-01-01 |
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| record_format | Article |
| series | Plants |
| spelling | doaj.art-e9b6497e4e2346a29b953dea619c35362024-01-29T14:10:53ZengMDPI AGPlants2223-77472024-01-0113219910.3390/plants13020199The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage SpeciesAlaor Ribeiro da Rocha Neto0Renato de Mello Prado1Mara Cristina Pessôa da Cruz2Department of Soils and Fertilizers, Faculdade de Ciência Agrárias e Veterinárias, São Paulo State University (UNESP), Campus Jaboticabal, Via de Acesso Prof. Paulo Donato Castellane s/n, Jaboticabal 14884-900, BrazilDepartment of Soils and Fertilizers, Faculdade de Ciência Agrárias e Veterinárias, São Paulo State University (UNESP), Campus Jaboticabal, Via de Acesso Prof. Paulo Donato Castellane s/n, Jaboticabal 14884-900, BrazilDepartment of Soils and Fertilizers, Faculdade de Ciência Agrárias e Veterinárias, São Paulo State University (UNESP), Campus Jaboticabal, Via de Acesso Prof. Paulo Donato Castellane s/n, Jaboticabal 14884-900, BrazilCover crops can be used to accelerate the solubilization process of low-solubility fertilizers; thus, the aim of this study was to evaluate the potential of grasses in solubilizing potassium from phonolite rock powder. With a 2 × 5 factorial scheme, two doses of phonolite rock powder, equivalent to 0 and 8 t ha<sup>−1</sup>, were combined with four grass species (<i>Urochloa ruziziensis</i>, <i>U. decumbens</i>, <i>U. humidicola</i>, and <i>Andropogon gayanus</i>), besides a control treatment without any cover crop. The dry matter production of the aerial parts of the plants was evaluated at days 40 and 70 post-emergence, and then the concentration of potassium in the plants and the soil was evaluated (exchangeable, non-exchangeable, structural, and total potassium contents). In the soil, the phonolitic rock powder increased the exchangeable, non-exchangeable, structural, and total K contents, favoring the absorption of K and the production of the dry mass of the three <i>Urochloa</i>, but <i>U. decumbens</i> stood out because it promoted greater availability of K in the system compared to the cultivation of other plant species. This research proposes the inclusion of <i>U. decumbens</i> in production systems that receive phonolitic rock, constituting a sustainable strategy to improve its agronomic efficiency.https://www.mdpi.com/2223-7747/13/2/199potassiumsolubilityrock powdercover cropssoil fertility |
| spellingShingle | Alaor Ribeiro da Rocha Neto Renato de Mello Prado Mara Cristina Pessôa da Cruz The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage Species Plants potassium solubility rock powder cover crops soil fertility |
| title | The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage Species |
| title_full | The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage Species |
| title_fullStr | The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage Species |
| title_full_unstemmed | The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage Species |
| title_short | The Impact Ground Phonolite Rock’s Potassium Solubilization in Tropical Soil Depends on the Cultivated Forage Species |
| title_sort | impact ground phonolite rock s potassium solubilization in tropical soil depends on the cultivated forage species |
| topic | potassium solubility rock powder cover crops soil fertility |
| url | https://www.mdpi.com/2223-7747/13/2/199 |
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