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http://hdl.handle.net/1843/83869| Type: | Artigo de Periódico |
| Title: | The light intensity in the cultivation environment and the impact of glyphosate on plants of the Urochloa genus |
| Authors: | Victor Augustus Vasconcelos de Oliveira Luan Mateus Silva Donato Murilo Antônio Oliveira Ruas José Ângeles Moreira de Oliveira Richardson Fernandes de Souza Leonardo David Tuffi Santos |
| Abstract: | The variation in light within the environment triggers morphophysiological changes in plants and can lead to distinct responses in sun-exposed or shaded plants to glyphosate. The response of Urochloa genotypes subjected to desiccation with 2160, 1622.4, 1080, 524.4, 273.6, and 0.0 g ha−1 of glyphosate was evaluated in full sun and shade conditions. Cayana grass, mulato II grass, and sabiá grass – hybrids recently launched on the market, in addition to palisade grass and congo grass were evaluated. Under full sun, we achieved control of congo grass using 1080 g ha−1 of glyphosate, while the other grasses required 2160 g ha−1. In the low-light environment, sabiá grass was effectively controlled with 524.4 g ha−1 of glyphosate, but the other grasses needed 273.6 g ha−1. In shading, compared to full sun, the savings with glyphosate were 75 and 76% for the control of congo grass and sabiá grass, respectively, and 87% for palisade grass, mulato II grass and cayana grass. Increasing glyphosate doses leads to a decline in the quantum efficiency of photosystem II and in the electron transport rate, especially in the shade. Urochloa genotypes are more sensitive to glyphosate in the shade, which must be considered when determining the herbicide dose. |
| Subject: | Gramínea Plantas - Efeito dos herbicidas Plantas - Efeito da radiação solar |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICA - INSTITUTO DE CIÊNCIAS AGRÁRIAS |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1080/03601234.2024.2381934 |
| URI: | http://hdl.handle.net/1843/83869 |
| Issue Date: | 22-Jul-2024 |
| metadata.dc.url.externa: | https://www.tandfonline.com/doi/full/10.1080/03601234.2024.2381934 |
| metadata.dc.relation.ispartof: | Journal of Environmental Science and Health, Part B |
| Appears in Collections: | Artigo de Periódico |
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