Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima
The objective of this research was to evaluate the effects of two kinds of soil management and crop rotation on physical and chemical quality of a dystrophic yellow Latosol in the savannah of Roraima. The experiment was a randomized block with four replications, two kinds of soil tillage, convention...
| Autor principal: | Rodrigues, Tarcísio Gomes |
|---|---|
| Grau: | Dissertação |
| Idioma: | por |
| Publicado em: |
Universidade Federal de Roraima
2022
|
| Assuntos: | |
| Acesso em linha: |
http://repositorio.ufrr.br:8080/jspui/handle/prefix/616 |
| id |
oai:repositorio.ufrr.br:prefix-616 |
|---|---|
| recordtype |
dspace |
| spelling |
oai:repositorio.ufrr.br:prefix-6162023-07-28T13:14:22Z Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima Soil quality in systems with conventional tillage and crop rotation in a dystrophic yellow latosol in the savanna of Roraima Rodrigues, Tarcísio Gomes Melo, Valdinar Ferreira http://lattes.cnpq.br/2276422584085276 Manejo do solo Fertilidade do solo Matéria orgânica Soil management Soil fertility Organic matter CNPQ::CIENCIAS AGRARIAS::AGRONOMIA The objective of this research was to evaluate the effects of two kinds of soil management and crop rotation on physical and chemical quality of a dystrophic yellow Latosol in the savannah of Roraima. The experiment was a randomized block with four replications, two kinds of soil tillage, conventional tillage (PC) and no tillage (PD), four treatments represented by four crop rotations, and an adjacent reference. Soil samples were collected at four different depths: 0.0 to 5 cm; 5 to 10 cm and in intervals of 10 to 20 cm and 20 to 40 cm. The treatments represented by the crop rotations were described as follows: SMCM - Soybean, corn, bean + corn, corn, soybeans; SQCMH - soybean, quicuio grass, bean + corn, millet, soybean; SBMM - Soybean, brachiaria, corn, soybean; SBCM – soybean, brachiaria, bean + corn, corn, soybean. Three samples were collected on each single soil repetition and formed a composite sample of each layer. At the moment of collection of the samples was determined soil moisture in the field. The penetration resistance was verified from the surface to a depth of 0.0 to 40 cm in a range of 5 cm, totaling nine lectures at each measurement location. It was used multivariate analysis by Principal Component Analysis (PCA) and verified by the contrast between the savannah and uncultivated area under PC and PD that there were significant changes in soil properties in layers 0-5 and 5 - 10 cm caused by different management compared to uncultivated savanna. Analysis of variance was performed using the software Sisvar and it was found that F was significant for handling, crop rotation and layers. Was carried out the Tukey test for the averages and according to the results, it showed a significant interaction between the factors and crop rotation and management layers to the physical and chemical variables. According to the results of conservation tillage and crop rotation is a viable alternative for exploring the Savannah area of Roraima. O objetivo da pesquisa foi avaliar os efeitos de dois tipos de manejo do solo e rotação de culturas na qualidade física e química de um Latossolo amarelo distrófico na savana de Roraima. O experimento seguiu um delineamento bloco casualizado com quatro repetições, dois tipos de manejo do solo, (plantio convencional-PC e plantio direto -PD), quatro tratamentos representado por quatro rotações de cultura, e uma área adjacente como referência. As amostras de solo foram coletadas em quatro diferentes profundidades: de 0,0 a 5 cm; 5 a 10 cm e nos intervalos de 10 a 20 cm e 20 a 40 cm. Os tratamentos representados pelas rotações de cultura foram assim descritos: SMCM Soja → milho → (feijão + milho) → milho → soja; SQCMH Soja → Quicuio → (feijão + milho) → milheto → soja; SBMM Soja → braquiária → milho → milho → soja; SBCM Soja → braquiária → (feijão + milho) → milho → soja. Foram coletadas três amostras simples de solo em cada repetição e formou-se uma amostra composta de cada camada. No momento de coletas das amostras foi determinada a umidade do solo em campo. A resistência à penetração foi verificada a partir da superfície 0,0 até a profundidade de 40 cm com intervalo de 5 cm totalizando nove leituras em cada local de medição. Empregou-se a análise multivariada por meio da Análise de Componentes Principais (ACP) e verificou-se através do contraste entre a savana não cultivada e a área sob PC e PD que houve mudanças significativas nos atributos do solo nas camadas 0-5 e 5-10 cm provocadas pelos diferentes manejos em comparação à savana não cultivada. Realizou a análise de variância utilizando-se o Software Sisvar e constatou que F foi significativo para manejo, rotação de culturas e camadas. Realizou o teste de Tukey para testar as médias e de acordo com os resultados para algumas variáveis analisadas houve interação significativa entre os fatores rotação de culturas e manejo e camadas para as variáveis físicas e químicas. O plantio convencional, plantio direto e a rotação de culturas proporcionaram mudanças significativas nos atributos físicos e químicos do solo podendo concluir que o plantio direto, por manter ou melhorar a fertilidade do solo e por reduzir a necessidade do uso de máquinas, contribui com um menor custo na condução de culturas com menor impacto ambiental pode ser uma alternativa viável para exploração das savanas de Roraima. 2022-03-23T21:48:52Z 2013 2022-03-23T21:48:52Z 2013 Dissertação RODRIGUES, Tarcísio Gomes. Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima. 2013. 104f. Dissertação (Mestrado em Agronomia) - Programa de Pós-Graduação em Agronomia, Universidade Federal de Roraima, Boa Vista, 2013. http://repositorio.ufrr.br:8080/jspui/handle/prefix/616 por Acesso Aberto Attribution-NonCommercial-ShareAlike 3.0 Brazil http://creativecommons.org/licenses/by-nc-sa/3.0/br/ Universidade Federal de Roraima Brasil PRPPG - Pró-reitoria de Pesquisa e Pós-Graduação POSAGRO - Programa de Pós-Graduação em Agronomia UFRR |
| institution |
Repositório Institucional - Universidade Federa de Roraima - UFRR |
| collection |
DSpace |
| language |
por |
| topic |
Manejo do solo Fertilidade do solo Matéria orgânica Soil management Soil fertility Organic matter CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
| spellingShingle |
Manejo do solo Fertilidade do solo Matéria orgânica Soil management Soil fertility Organic matter CNPQ::CIENCIAS AGRARIAS::AGRONOMIA Rodrigues, Tarcísio Gomes Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima |
| topic_facet |
Manejo do solo Fertilidade do solo Matéria orgânica Soil management Soil fertility Organic matter CNPQ::CIENCIAS AGRARIAS::AGRONOMIA |
| description |
The objective of this research was to evaluate the effects of two kinds of soil management and crop rotation on physical and chemical quality of a dystrophic yellow Latosol in the savannah of Roraima. The experiment was a randomized block with four replications, two kinds of soil tillage, conventional tillage (PC) and no tillage (PD), four treatments represented by four crop rotations, and an adjacent reference. Soil samples were collected at four different depths: 0.0 to 5 cm; 5 to 10 cm and in intervals of 10 to 20 cm and 20 to 40 cm. The treatments represented by the crop rotations were described as follows: SMCM - Soybean, corn, bean + corn, corn, soybeans; SQCMH - soybean, quicuio grass, bean + corn, millet, soybean; SBMM - Soybean, brachiaria, corn, soybean; SBCM – soybean, brachiaria, bean + corn, corn, soybean. Three samples were collected on each single soil repetition and formed a composite sample of each layer. At the moment of collection of the samples was determined soil moisture in the field. The penetration resistance was verified from the surface to a depth of 0.0 to 40 cm in a range of 5 cm, totaling nine lectures at each measurement location. It was used multivariate analysis by Principal Component Analysis (PCA) and verified by the contrast between the savannah and uncultivated area under PC and PD that there were significant changes in soil properties in layers 0-5 and 5 - 10 cm caused by different management compared to uncultivated savanna. Analysis of variance was performed using the software Sisvar and it was found that F was significant for handling, crop rotation and layers. Was carried out the Tukey test for the averages and according to the results, it showed a significant interaction between the factors and crop rotation and management layers to the physical and chemical variables. According to the results of conservation tillage and crop rotation is a viable alternative for exploring the Savannah area of Roraima. |
| author_additional |
Melo, Valdinar Ferreira |
| author_additionalStr |
Melo, Valdinar Ferreira |
| format |
Dissertação |
| author |
Rodrigues, Tarcísio Gomes |
| title |
Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima |
| title_short |
Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima |
| title_full |
Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima |
| title_fullStr |
Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima |
| title_full_unstemmed |
Indicadores de qualidade do solo em plantio direto e convencional na savana de Roraima |
| title_sort |
indicadores de qualidade do solo em plantio direto e convencional na savana de roraima |
| publisher |
Universidade Federal de Roraima |
| publishDate |
2022 |
| url |
http://repositorio.ufrr.br:8080/jspui/handle/prefix/616 |
| _version_ |
1787156639241994240 |
| score |
11.675608 |