Erosão hídrica pós-plantio em florestas de eucalipto na bacia do rio Paraná, no leste do Mato Grosso do Sul

Cândido, Bernardo Moreira; Silva, Marx Leandro Naves; Curi, Nilton; Batista, Pedro Velloso Gomes

doi:10.1590/s0100-06832014000500022

Cited by 23 publications

(17 citation statements)

References 29 publications

(30 reference statements)

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“…The tolerance values found corroborate values presented in the literature, from 9 to 11 Mg ha -1 yr -1 for Hapludox (Oliveira et al, 2011;Cândido et al, 2014). As the present study was conducted in the rainy season (crop season from November to March each year), which corresponds to approximately 75 % of total annual rainfall (Mello et al, 2007), it is possible that soil loss values of bare soil plots (7.42, 8.27, and 14.10 Mg ha -1 per period) exceed such soil loss tolerance limits when the whole year is considered.…”

Section: Rev Bras Cienc Solo 2018;42:e0170081supporting

confidence: 89%

Relationship Among Crop Systems, Soil Cover, and Water Erosion on a Typic Hapludox

Lima

Silva

Quinton

et al. 2018

Rev. Bras. Ciênc. Solo

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Several soil conservation practices are used to reduce water erosion and ensure sustainable agriculture. An effective crop management practice is intercropping, in which two or more crops with different architectures and vegetative cycles are grown simultaneously in the same area. We hypothesized that intercropping of corn and jack-bean increases soil cover and reduce soil erosion by water in comparison to monocropping. The objective of this study was to evaluate the effects of different crop systems on soil cover and on soil erosion by water. Soil and water losses from a Typic Hapludox were measured under the following systems: corn cultivation (CO), jack-bean cultivation (JB), intercropping of corn and jack-bean (IC), and bare soil (BS), as a reference for maximum erosion rates. For each crop system, erosion plots with dimensions of 12 × 4 m were set up in the field on a 0.12 m m -1 slope gradient. The experiment was carried out under natural rainfall, over three crop seasons (November to March) from 2011 to 2014. The soil cover index of the systems was monitored during crop growth, and rainfall erosivity for the crop seasons was calculated according to the EI 30 index to interpret soil and water losses. A set of linear mixed models was fitted to relate soil losses to rainfall erosivity, crop systems, and soil cover. The average rainfall erosivity in the study area was 6,132 MJ mm ha -1 h -1 per crop season. The results indicate that water losses are directly related to erosivity and are less influenced by soil cover and cultivation systems than the soil losses. A linear maximum value of the soil cover index was achieved 70 days after sowing. Intercropping exhibited greater soil cover than single crops. Total soil losses from the three seasons display the trend: BS > CO > JB > IC. The best fitted model of the linear mixed models indicates that soil loss responses are strongly correlated with rainfall erosivity and soil cover, which nullified the influence of the crop systems in the model.

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Section: Rev Bras Cienc Solo 2018;42:e0170081supporting

confidence: 89%

Relationship Among Crop Systems, Soil Cover, and Water Erosion on a Typic Hapludox

Lima

Silva

Quinton

et al. 2018

Rev. Bras. Ciênc. Solo

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“…A predominância de agregados de tamanho silte no LVdf é particularmente preocupante, visto que seu diminuto tamanho facilita o transporte durante a enxurrada, conforme relatado por Cândido et al (2014). Além disso, ocupando posições elevadas tanto na encosta quanto no perfil, é facilmente removido e transportado encosta abaixo.…”

Section: Resultsunclassified

“…Essa concentração decorre do acúmulo de agregados maiores, enquanto os agregados de tamanho silte e a argila continuam a ser transportados até os cursos d'água. Estudo sobre erosão em Latossolo Vermelho distrófico textura média no Cerrado constatou a presença de maiores teores de areia do que argila na camada superior do solo na ocorrência de selamento superficial (Cândido et al, 2014). A maior percentagem de argila dispersa em todos os horizontes do GMbd demonstra menor atuação das forças de agregação/coesão no ambiente saturado em relação aos solos mais secos a montante.…”

Section: Resultsunclassified

Erosão hídrica em solos cultivados e sob mata ciliar

Momoli

Cooper

2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi identificar atributos dos solos e de sedimentos como instrumentos para determinação dos impactos decorrentes da erosão hídrica, bem como propor redução do sobreúso dos solos no Cerrado goiano. Solos e sedimentos da mata ciliar do Córrego Ponte Nova, bem como do cultivo de soja a montante foram avaliados por micromorfometria quanto à morfologia, à granulometria e à porosidade. Na encosta cultivada, o solo foi classificado como Latossolo Vermelho distroférrico, e, na mata ciliar de vereda, como Plintossolo Pétrico Concrecionário êutrico e Gleissolo Melânico Tb distrófico típico. Solos e sedimentos foram predominantemente argilosos, e a fração argila encontrava-se naturalmente agregada em partículas maiores, de tamanho silte e areia. Análises morfológicas, granulométricas e de porosidade, por micromorfometria, possibilitaram distinguir os sedimentos dos solos soterrados, pela diferenciação de coloração, textura e porosidade. Elevada concentração de agregados de argila tamanho areia no Gleissolo Melânico sugere a remoção seletiva de partículas finas, o que indica erosão no solo sob a mata ciliar. A elevada deposição de sedimentos sobre os solos da mata ciliar compromete a função de filtro do solo e também a perpetuidade e a regeneração da floresta por causa do soterramento de sementes e plântulas.Termos para indexação: erosão, impactos ambientais, micromorfometria, planejamento agrícola, sedimentos. Water erosion on cultivated soil and soil under riparian forestAbstract -The objective of this work was to identify attributes of soil and of sediments as a tool to determine the impacts from water erosion, as well as to propose reducing the overuse of the soil in the Cerrado, in the state of Goiás, Brazil. Soils and sediments from the riparian forest of the Ponte Nova Stream and from upstream soybean crop areas were evaluated by micromorphometrics as to morphology, particle size, and porosity. Rhodic Oxisol was present in the cultivated hillside, and Petroferric Oxisol and Typic Eutraquox, in the riparian forest path. Soils and sediments were predominantly clayed, and the clay fraction was naturally aggregated into larger particles of silt and sand sizes. Analyses of morphological atributes, particle size, and porosity -by micromorphometrics -allowed to distinguish the sediment of buried soils by color, texture, and porosity differentiation. The high concentration of sandy-sized clay aggregates in Typic Eutraquox suggests the selective removal of fine particles, indicating soil erosion under the riparian forest. The high sediment deposition on the riparian forest soils is a risk to the soil filter function, and also to the perpetuity and regeneration of the forest because of the burial of seeds and seedlings.

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“…A recent study carried out by Cândido et al (2014), which evaluated soil losses in homogeneous eucalyptus forest, showed the importance of adopting conservationist practices in slopes.…”

Section: Resultsmentioning

confidence: 99%

Water erosion associated with rainfall patterns in the extreme South of Bahia in eucalyptus post-planting

Guimarães

Silva

Bispo

et al. 2017

SCA

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Soil and water losses caused by water erosion represent a risk of environmental damage and loss of soil productivity, with economic, social and environmental consequences. Plant cover is an important ally against water erosion, together with the knowledge of rainfall characteristics. Thus, this study aimed to evaluate the soil and water losses and to determine rainfall patterns in two homogeneous eucalyptus plantations; one in Yellow Argisol, located in Teixeira de Freitas, and another in Humiluvic Spodosol, located in Caravelas, both in the Extreme South of the state of Bahia. Erosion plots were installed, and consisted of three treatments: bare soil, eucalyptus, and native forest. Rainfall data was obtained from an automatic gauging station, with 10 minute registration interval for erosivity (erosivity index EI 30 ) and rainfall pattern analyses. Higher soil losses were observed in Yellow Argisol, and the advanced rainfall pattern was predominant. Eucalyptus minimum tillage was efficient in reducing soil and water losses by water erosion.

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Erosão hídrica pós-plantio em florestas de eucalipto na bacia do rio Paraná, no leste do Mato Grosso do Sul

Cited by 23 publications

References 29 publications

Relationship Among Crop Systems, Soil Cover, and Water Erosion on a Typic Hapludox

Relationship Among Crop Systems, Soil Cover, and Water Erosion on a Typic Hapludox

Erosão hídrica em solos cultivados e sob mata ciliar

Water erosion associated with rainfall patterns in the extreme South of Bahia in eucalyptus post-planting

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