Agriglass: vidros a base de boro e fósforo aplicados na agricultura
The search for compounds that minimally harm the environment is increasing. Much of the fertilizers currently found on the market are known to cause environmental damage as they are easily leached and carried to waterways promoting effects such as eutrophication. Therefore, it is necessary to formul...
| Autor principal: | Ruschel, Latoya Creslem Batista |
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| Formato: | Trabalho de Conclusão de Curso (Graduação) |
| Idioma: | Português |
| Publicado em: |
Universidade Tecnológica Federal do Paraná
2021
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| Assuntos: | |
| Acesso em linha: |
http://repositorio.utfpr.edu.br/jspui/handle/1/23917 |
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| Resumo: |
The search for compounds that minimally harm the environment is increasing. Much of the fertilizers currently found on the market are known to cause environmental damage as they are easily leached and carried to waterways promoting effects such as eutrophication. Therefore, it is necessary to formulate fertilizers that meet agricultural demand and as sustainable as possible. Thus, this work investigated a fertilizer based on a glass matrix, called Agriglass, which is composed of phosphorus, boron, potassium, zinc and copper, and has solubility and controlled release, thus avoiding undesirable nutrient losses to the environment. Vitreous samples were prepared by differentiating zinc concentrations 0, 5, 10, 15 and 25% in a first step. The composition with 15% Zn and 1% Cu was prepared in a second step. The samples were characterized by their electrical conductivity hygroscopy, Raman spectroscopy, scanning electron microscopy and X-ray fluorescence spectroscopy. Agriglass fertilizer was tested at 4 different concentrations 0, 1, 10, 100 mg/g of soil in maize hybrids grown in vitro and in soil. The antimicrobial power of the nutritive compound was also analyzed. It has been proven by the methodologies that the fertilizer presents controlled release, has an ideal pH for most crops, and has a high hygroscopicity when there are low concentrations of Zn. Regarding the methodologies that involved its effect on plant growth, it was found that in vitro cultivation was not efficient in order to identify agronomic differences when compared to different formulations, due to partial solubilization of the vitreous compound in the culture medium. As for the soil test, at the evaluated development stage, it was not possible to observe differences between the plants with different formulation levels, since they still absorbed nutrients present in the substrate and in the seed itself. Moreover, the antimicrobial evaluation showed that agriglass is efficient in controlling the fungus Thielaviopsis paradoxa, which causes plant pathogens, with the most inhibiting formulation containing 0% Zn and 0% Cu. In this sense, the tested formulation has high potential to be applied in agriculture. |
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