Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFLA |
Texto Completo: | http://repositorio.ufla.br/jspui/handle/1/46647 |
Resumo: | Brazilian soils are highly weathered, have low natural fertility and high acidity. Thus, the practice of liming is essential for the management of these soils to achieve high crop productivity. Slags are by-products generated in great amounts during the production of steel and metal alloys. These by-products may have potential to amend soil acidity since they contain Ca and Mg silicates and oxides. Therefore, slag appears as a sustainable source to be used as an acidity amendment in Brazilian soils and as a source of Ca and Mg for plants. However, before being used for this purpose, studies must be carried out to assess its agronomic efficiency. Therefore, the objective of this work was to study the potential use of a metallurgical slag, in comparison with a commercial limestone, as an acidity amendment in two contrasting Brazilian soils and as a source of nutrients for the cultivation of rice and soybean. For this, pot studies were carried out in a greenhouse, with the slag and commercial limestone being previously applied to the soils (medium and clayey texture) in two doses, to increase the base saturation to 50 and 100%. Considering that each crop was treated as an experiment and that, within each experiment, the soils were evaluated separately, the experimental design in each situation was the completely randomized block, consisting of 2 products x 2 doses + 1 control for each type of soil, totaling 40 pots per crop (4 replicates of each treatment). The fertilization was carried out with N, P, K, S, B, Cu, Mo, and Zn at doses of 300, 200, 150, 50, 0.5, 1.5, 0.1, and 5 mg dm-3 respectively. For rice, 10 seeds were sown and 3 seeds per pot were left after emergence, whereas for soybeans, 5 seeds were sown and 2 seeds per pot were left after emergence. The experiment was carried out until the final stage of the crop maturation, in which chemical analyzes were carried out on plants (roots, shoots, and grains), as well as in the soil after the crop cultivation. The slag showed chemical and physical characteristics within the limits required by current legislation for soil acidity amendments. Slag was as efficient as limestone in increasing soil pH and decreasing Al3+ saturation at the lowest dose applied to both soils cultivated with rice and soybean. Furthermore, the slag was able to supply Ca and Mg to rice and soybean plants, similarly to what was verified for commercial limestone. |
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Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e sojaMetallurgy slag as a soil acidity corrective and a source of nutrients for rice and soybeanSolos - AcidezCalagem dos solosEscória metalúrgicaSustentabilidadeSoils - AcidityLiming the soilsMetallurgical slagSustainabilityCiência do SoloBrazilian soils are highly weathered, have low natural fertility and high acidity. Thus, the practice of liming is essential for the management of these soils to achieve high crop productivity. Slags are by-products generated in great amounts during the production of steel and metal alloys. These by-products may have potential to amend soil acidity since they contain Ca and Mg silicates and oxides. Therefore, slag appears as a sustainable source to be used as an acidity amendment in Brazilian soils and as a source of Ca and Mg for plants. However, before being used for this purpose, studies must be carried out to assess its agronomic efficiency. Therefore, the objective of this work was to study the potential use of a metallurgical slag, in comparison with a commercial limestone, as an acidity amendment in two contrasting Brazilian soils and as a source of nutrients for the cultivation of rice and soybean. For this, pot studies were carried out in a greenhouse, with the slag and commercial limestone being previously applied to the soils (medium and clayey texture) in two doses, to increase the base saturation to 50 and 100%. Considering that each crop was treated as an experiment and that, within each experiment, the soils were evaluated separately, the experimental design in each situation was the completely randomized block, consisting of 2 products x 2 doses + 1 control for each type of soil, totaling 40 pots per crop (4 replicates of each treatment). The fertilization was carried out with N, P, K, S, B, Cu, Mo, and Zn at doses of 300, 200, 150, 50, 0.5, 1.5, 0.1, and 5 mg dm-3 respectively. For rice, 10 seeds were sown and 3 seeds per pot were left after emergence, whereas for soybeans, 5 seeds were sown and 2 seeds per pot were left after emergence. The experiment was carried out until the final stage of the crop maturation, in which chemical analyzes were carried out on plants (roots, shoots, and grains), as well as in the soil after the crop cultivation. The slag showed chemical and physical characteristics within the limits required by current legislation for soil acidity amendments. Slag was as efficient as limestone in increasing soil pH and decreasing Al3+ saturation at the lowest dose applied to both soils cultivated with rice and soybean. Furthermore, the slag was able to supply Ca and Mg to rice and soybean plants, similarly to what was verified for commercial limestone.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Os solos brasileiros são altamente intemperizados, apresentam baixa fertilidade natural e alta acidez. Com isso, a prática da calagem é essencial para seu manejo em busca de uma boa produtividade agrícola. As escórias são subprodutos gerados em grandes quantidades na produção de aço e ligas metálicas. Esses subprodutos podem apresentar potencial de correção de acidez em solos devido apresentarem silicatos e óxidos de Ca e Mg. Por isso, a escória surge como uma fonte sustentável para ser usado como corretivo de acidez em solos brasileiros e como fonte de Ca e Mg para as plantas. Contudo, antes de ser utilizada para tal fim, devem ser realizados estudos avaliando sua eficiência agronômica. Sendo assim, o objetivo deste trabalho foi de estudar o potencial de utilização de uma escória metalúrgica, em comparação com um calcário comercial, como corretivo de acidez em dois solos contrastantes brasileiros e como fonte de nutrientes para o cultivo de arroz e soja. Para isso, realizou-se o estudo de vasos em casa de vegetação, sendo a escória e o calcário comercial aplicados previamente aos solos (textura média e argilosa) em duas doses, para aumentar a saturação por bases dos solos para 50 e 100%. Considerando que cada cultura foi tratada como um experimento e que dentro de cada experimento os solos foram avaliados separadamente, o delineamento experimental em cada situação foi o de blocos inteiramente casualizados, constando de 2 produtos x 2 doses + 1 testemunha para cada tipo de solo, totalizando 40 vasos por cultura (4 repetições de cada tratamento). Foi realizada a adubação com N, P, K, S, B, Cu, Mo, e Zn nas doses 300; 200; 150; 50; 0,5; 1,5; 0,1; e 5 mg dm-3 respectivamente. Para o arroz, foram semeadas 10 sementes e deixadas 3 por vaso após emergência, e para a soja foram semeadas 5 sementes e deixadas 2 por vaso após emergência. O experimento foi levado até o estágio final de maturação das culturas, nas quais realizaram-se as análises químicas nas plantas (raiz, parte aérea e grãos), além de análises nos solos após o cultivo. A escória apresentou características químicas e físicas dentro dos limites exigidos pela legislação vigente para corretivos de acidez do solo. A escória foi tão eficiente quanto o calcário em aumentar o pH dos solos e diminuir a saturação do Al3+ na menor dose aplicada nos dois solos cultivados com o arroz e a soja. Além disso, a escória foi capaz de fornecer Ca e Mg às plantas de arroz e soja, obtendo resultados semelhantes ao do calcário comercial.Universidade Federal de LavrasPrograma de Pós-Graduação em Ciência do SoloUFLAbrasilDepartamento de Ciência do SoloLopes, GuilhermeGuilherme, Luiz Roberto GuimarãesRamos, Silvio JunioSilva, Gabrielly Nayara Tavares da2021-07-05T16:55:56Z2021-07-05T16:55:56Z2021-07-052021-04-22info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisapplication/pdfSILVA, G. N. T. da. Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja. 2021. 50 p. Dissertação (Mestrado em Ciência do Solo) – Universidade Federal de Lavras, Lavras, 2021.http://repositorio.ufla.br/jspui/handle/1/46647porinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFLAinstname:Universidade Federal de Lavras (UFLA)instacron:UFLA2023-05-11T14:14:18Zoai:localhost:1/46647Repositório InstitucionalPUBhttp://repositorio.ufla.br/oai/requestnivaldo@ufla.br || repositorio.biblioteca@ufla.bropendoar:2023-05-11T14:14:18Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA)false |
dc.title.none.fl_str_mv |
Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja Metallurgy slag as a soil acidity corrective and a source of nutrients for rice and soybean |
title |
Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja |
spellingShingle |
Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja Silva, Gabrielly Nayara Tavares da Solos - Acidez Calagem dos solos Escória metalúrgica Sustentabilidade Soils - Acidity Liming the soils Metallurgical slag Sustainability Ciência do Solo |
title_short |
Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja |
title_full |
Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja |
title_fullStr |
Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja |
title_full_unstemmed |
Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja |
title_sort |
Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja |
author |
Silva, Gabrielly Nayara Tavares da |
author_facet |
Silva, Gabrielly Nayara Tavares da |
author_role |
author |
dc.contributor.none.fl_str_mv |
Lopes, Guilherme Guilherme, Luiz Roberto Guimarães Ramos, Silvio Junio |
dc.contributor.author.fl_str_mv |
Silva, Gabrielly Nayara Tavares da |
dc.subject.por.fl_str_mv |
Solos - Acidez Calagem dos solos Escória metalúrgica Sustentabilidade Soils - Acidity Liming the soils Metallurgical slag Sustainability Ciência do Solo |
topic |
Solos - Acidez Calagem dos solos Escória metalúrgica Sustentabilidade Soils - Acidity Liming the soils Metallurgical slag Sustainability Ciência do Solo |
description |
Brazilian soils are highly weathered, have low natural fertility and high acidity. Thus, the practice of liming is essential for the management of these soils to achieve high crop productivity. Slags are by-products generated in great amounts during the production of steel and metal alloys. These by-products may have potential to amend soil acidity since they contain Ca and Mg silicates and oxides. Therefore, slag appears as a sustainable source to be used as an acidity amendment in Brazilian soils and as a source of Ca and Mg for plants. However, before being used for this purpose, studies must be carried out to assess its agronomic efficiency. Therefore, the objective of this work was to study the potential use of a metallurgical slag, in comparison with a commercial limestone, as an acidity amendment in two contrasting Brazilian soils and as a source of nutrients for the cultivation of rice and soybean. For this, pot studies were carried out in a greenhouse, with the slag and commercial limestone being previously applied to the soils (medium and clayey texture) in two doses, to increase the base saturation to 50 and 100%. Considering that each crop was treated as an experiment and that, within each experiment, the soils were evaluated separately, the experimental design in each situation was the completely randomized block, consisting of 2 products x 2 doses + 1 control for each type of soil, totaling 40 pots per crop (4 replicates of each treatment). The fertilization was carried out with N, P, K, S, B, Cu, Mo, and Zn at doses of 300, 200, 150, 50, 0.5, 1.5, 0.1, and 5 mg dm-3 respectively. For rice, 10 seeds were sown and 3 seeds per pot were left after emergence, whereas for soybeans, 5 seeds were sown and 2 seeds per pot were left after emergence. The experiment was carried out until the final stage of the crop maturation, in which chemical analyzes were carried out on plants (roots, shoots, and grains), as well as in the soil after the crop cultivation. The slag showed chemical and physical characteristics within the limits required by current legislation for soil acidity amendments. Slag was as efficient as limestone in increasing soil pH and decreasing Al3+ saturation at the lowest dose applied to both soils cultivated with rice and soybean. Furthermore, the slag was able to supply Ca and Mg to rice and soybean plants, similarly to what was verified for commercial limestone. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-07-05T16:55:56Z 2021-07-05T16:55:56Z 2021-07-05 2021-04-22 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
SILVA, G. N. T. da. Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja. 2021. 50 p. Dissertação (Mestrado em Ciência do Solo) – Universidade Federal de Lavras, Lavras, 2021. http://repositorio.ufla.br/jspui/handle/1/46647 |
identifier_str_mv |
SILVA, G. N. T. da. Escória de metalurgia como corretivo de acidez do solo e fonte de nutrientes para arroz e soja. 2021. 50 p. Dissertação (Mestrado em Ciência do Solo) – Universidade Federal de Lavras, Lavras, 2021. |
url |
http://repositorio.ufla.br/jspui/handle/1/46647 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Ciência do Solo UFLA brasil Departamento de Ciência do Solo |
publisher.none.fl_str_mv |
Universidade Federal de Lavras Programa de Pós-Graduação em Ciência do Solo UFLA brasil Departamento de Ciência do Solo |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFLA instname:Universidade Federal de Lavras (UFLA) instacron:UFLA |
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Universidade Federal de Lavras (UFLA) |
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UFLA |
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UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA |
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Repositório Institucional da UFLA - Universidade Federal de Lavras (UFLA) |
repository.mail.fl_str_mv |
nivaldo@ufla.br || repositorio.biblioteca@ufla.br |
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