Erosão em entressulcos sob caatinga e culturas agrícolas

Freitas, Francisco José de; Cantalice, José Ramon Barros; Bezerra, Sandro Augusto; Silva, Maria Daniela Rodrigues de Oliveira; Santos, Paulo Medeiros do; Correa, Rossini Matos; Lima, Priscila Alves; Figueira, Sandro Barbosa

doi:10.1590/s0100-06832008000400039

Cited by 10 publications

(17 citation statements)

References 13 publications

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“…There was an increase of 87.5% in water loss in relation to CP, which corresponds to the high surface runoff rate, low infiltration rate and high intensity of the simulated rainfall, which averaged 140 mm h -1 in the area of degraded grass. These values corroborate with the results obtained by Freitas et al (2008), when studying runoff in areas of caatinga and agricultural crops, also verified that the magnitude of the discharge (q) was of the order of 10 -5 m -2 s -1 . , evaluating the hydraulic characteristics of the runoff for different agricultural practices, found values of the order of 10 -5 and 10 -6 m -2 s -1 .…”

Section: Resultssupporting

confidence: 90%

“…The results of the referred research are also in accordance with those of Cantalice et al (2016), who observed values of the order of 10 -5 m -2 s -1 in pasture under different slopes. According to Freitas et al (2008), the greater detention of the liquid discharge by the CP is related by the greater physical-hydraulic resistance to the flow designated by its canopy and litter layer.…”

Section: Resultsmentioning

confidence: 99%

“…Evaluating the inter-rill erosion under semishrub caatinga and agricultural crops Freitas et al (2008) verified that natural vegetation and bean cultivation corresponded to the lower values of sediment concentration and lower rate of soil aggregates disintegration.…”

Section: Introductionmentioning

confidence: 85%

“…Due to limitations or scarcity in the availability of long historical series of pluviometric events, authors such as Freitas et al (2008), Bezerra et al (2009) andCantalice et al (2016), have used artificial precipitation produced by rain simulators to enable studies of water erosion in shorter periods, especially in semiarid regions.…”

Section: Introductionmentioning

confidence: 99%

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Water erosion in Caatinga and degraded pasture areas in semiarid region

Santos¹,

Souza²,

Pessoa³

et al. 2018

Amaz. Jour. of Plant Resear.

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Soil erosion causes great damage to the agricultural productive process, as it causes soil, water and nutrient losses. The present study aimed to evaluate soil and water losses under simulated rainfall in areas of caatinga and degraded pasture in the Brazilian semiarid. For that, a series of 20 simulated rains were implemented in the municipality of Serra Talhada, semiarid of the State of Pernambuco, under the following treatments: (1) preserved caatinga -CP; (2) caatinga with angico -CA; (3) Intermediate caatinga -CI; (4) degraded pasture -PD. The sediment concentration of the degraded pasture was lower than that of CP, CA and CI, with a 4.2 fold higher concentration for IC than PD. The lower sediment concentration in the PD is due to soil compaction due to grazing and the loss of the soil surface layer due to the erosion process of the last years. The area of CI was the one that presented the largest loss of soil, where it was observed an increase of 245.86% in relation to CP. Cite this article as: dos Santos, E.S.; de Souza, E.S.; Medeiros Pessoa, L.G.; Leite, P.A.; Wilcox, B.P.; Inácio Silva, J.R. 2018. Water erosion in Caatinga and degraded pasture areas in semiarid region. Amaz. Jour. of Plant Resear 2(4): 261-266.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Water erosion in Caatinga and degraded pasture areas in semiarid region

Santos¹,

Souza²,

Pessoa³

et al. 2018

Amaz. Jour. of Plant Resear.

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“…Essas perdas também ocorreram de forma decrescente, ou seja, à medida que aumentou a quantidade de palhada na cobertura, a perda de matéria orgânica diminuiu. Resultados semelhantes foram encontrados por FREITAS et al (2008) ao verificarem que houve redução na perda de MO em solos cobertos com palhada de feijão-guandu e batata-doce.…”

Section: Resultsunclassified

Perdas de solo, matéria orgânica e nutrientes por erosão hídrica em uma vertente coberta com diferentes quantidades de palha de cana-de-açúcar em Guariba - SP

2012

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RESUMO:A erosão em entressulcos resulta da desagregação causada pelo impacto das gotas de chuva na superfície do solo e pelo transporte superficial das partículas do solo desagregadas, onde se encontram a matéria orgânica e os nutrientes fundamentais para a produção agrícola. O presente trabalho teve como objetivo avaliar as perdas de solo, matéria orgânica e nutrientes em uma vertente localizada em uma área de Latossolo Vermelho-Amarelo distrófico, cultivada com cana--de-açúcar, que é colhida mecanicamente. As parcelas experimentais foram submetidas à ação de uma chuva simulada com intensidade de 60 mm h -1 , durante 65 minutos. Foram feitas análises do sedimento erodido para a determinação do volume de solução, das perdas de solo, matéria orgânica e nutrientes. Houve maiores perdas de solo, matéria orgânica e nutrientes nos sedimentos oriundos das parcelas com 0% e 25% de cobertura por palha de cana-de-açúcar. Em média, essas perdas foram reduzidas nas parcelas com 75% e 100% de cobertura com palha de cana-de-açúcar. Os resultados permitiram concluir que uma cobertura com palha de cana-de-açúcar acima de 50%, da área colhida, reduz a perda de solo e de matéria orgânica, bem como diminui a concentração de nutrientes no sedimento erodido. PALAVRAS-CHAVE:erosão em entressulcos, chuva simulada, palhada, Latossolo Vermelho. SOIL, ORGANIC MATTER AND NUTRIENTS LOSSES BY WATER EROSION IN A SLOPE WITH SUGARCANE STRAW, IN GUARIBA, STATE OF SÃO PAULO ABSTRACT:The interril erosion results of the disaggregation caused by the impact of the rainfall on the surface and by the superficial transport of the disaggregated soil particles, where there are the organic matter and the nutrients for the agricultural production. The present work aimed to evaluate the soil, organic matter and nutrients losses of a slope located in an area of distrofic Oxisol, cultivated with sugarcane and submitted to the automated crop. Experimental portions were submitted to the action of a simulated rain of 60 mm h -1 intensity, for 65 minutes. Analyses of the erosion sediment were made to determine the solution volume and soil, organic matter and nutrients losses. There were larger soil, organic matter and nutrients losses in the sediment of the portions with 0% and 25% of sugarcane straw coverage. On average, the losses were significantly reduced in the portions with 75% and 100% of sugarcane straw coverage. The results allowed concluding that the sugarcane straw coverage above 50%, in the crop area, reduces the soil and organic matter loss as well as the concentration of nutrients in the erosion sediment.

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The influence of forest regrowth on soil hydraulic properties and erosion in a semiarid region of Brazil

et al. 2017

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Dryland tropical forests are important but little‐understood ecosystems. These landscapes are at risk globally because of accelerated deforestation and the consequent losses of hydrological functions. An example is the Caatinga shrublands in northeastern Brazil; these dry tropical forests are undergoing rapid change as the land is converted to cultivated cropland and pastureland and then often abandoned after the land is exhausted, allowing forests to regrow. In this study, we evaluated how these changes influence soil hydraulic properties and soil erosion in Caatinga landscapes, by examining four sites of different ages: a recently abandoned pasture, a young (7 years of regrowth) secondary forest, an intermediate (35 years of regrowth) secondary forest, and an older (more than 55 years) forest. Rainfall simulation was used to assess soil infiltrability and susceptibility to erosion. In addition, we determined hydrological conductivity in the field using the Beerkan method (Kfs) and collected samples for laboratory‐determined measurements (Ks). We found that infiltrability and Kfs values were progressively higher as time since land abandonment increased, whereas Ks values were not significantly different across sites. Infiltrability was approximately 2 times smaller than Ks and Kfs—possibly owing to the formation of soil crusts from raindrop impact. Soil erosion did not show a progressive improvement with forest age and was better explained by site characteristics, such as herbaceous cover and slope. In general, our results suggest that in Caatinga landscapes, more than 35 years is required for the recovery of soil hydraulic properties following land abandonment.

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Erosão em entressulcos sob caatinga e culturas agrícolas

Cited by 10 publications

References 13 publications

Water erosion in Caatinga and degraded pasture areas in semiarid region

Water erosion in Caatinga and degraded pasture areas in semiarid region

Perdas de solo, matéria orgânica e nutrientes por erosão hídrica em uma vertente coberta com diferentes quantidades de palha de cana-de-açúcar em Guariba - SP

The influence of forest regrowth on soil hydraulic properties and erosion in a semiarid region of Brazil

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