The risk of erosion in Brazilian cultivated pastures

Sparovek, Gerd; Correchel, Vládia; Barretto, Alberto

doi:10.1590/s0103-90162007000100012

Cited by 21 publications

(10 citation statements)

References 12 publications

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“…27% of Brazil's territory is being used for agriculture or as pastures. Pastures occupy most of these areas with 76% of the total agricultural land, with high susceptibility to soil degradation due to the absence of adequate technologies such as the application of nutrients (Sparovek et al 2007).…”

Section: Installation Of Setsmentioning

confidence: 99%

Enriched animal manure as a source of phosphorus in sustainable agriculture

Almeida

Queiroz

Mikhael

et al. 2019

Int J Recycl Org Waste Agricult

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Purpose Due to the pressures of conforming to environmental quality standards and the increased costs of mineral fertilizer importation, there is growing interest in the use of organic residues as fertilizers. To test the hypothesis that indicates the quantity of animal manure (AM) depends on the phosphorus (P) needs of the crops, an experiment was run using three organic animal manures (chicken-CM, turkey-TM, and cow manure-CoM), enriched with limestone, gypsum, and phosphorus. Methods A greenhouse experiment was run using AM incorporated in a clayey soil, at a rate that equates to the P needs of Brachiaria sp. Contents of phosphorus, potassium (K + ), calcium (Ca +2 ), magnesium (Mg +2 ), sodium (Na + ), organic matter (OM), and values of pH and cation exchange capacity (CEC) were monitored during 120 days. Plants were collected to determine the dry matter.

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Section: Installation Of Setsmentioning

confidence: 99%

Enriched animal manure as a source of phosphorus in sustainable agriculture

Almeida

Queiroz

Mikhael

et al. 2019

Int J Recycl Org Waste Agricult

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“…In parallel, agriculture is the main economic activity in this region, with predominance of extensive livestock farming. Because of the poor management of pastures, water erosion poses a threat to these areas (Sparovek et al 2007). The Environmental Protection Area (EPA) of Lageado, located at Campo Grande city (capital of state Mato Grosso do Sul), contains important surface waters that supply nearly 75,000 individuals.…”

Section: Introductionmentioning

confidence: 99%

Erosion Risk Mapping Applied to Environmental Zoning

Oliveira

Sobrinho

Rodrigues

et al. 2010

Water Resour Manage

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Water erosion caused by inappropriate land use compromises the ecosystems and causes economic and social losses. To remedy this, the present study proposes (i) the evaluation of the erosion risk in an Environmental Protection Area (EPA) with the combination of Universal Soil Loss Equation (USLE), soil loss tolerance (T) estimates adapted to Brazilian soils and the legislation; and (ii) control measures from environmental zoning. This was applied to the EPA of Lageado stream, one of the main surface water sources in Campo Grande, Brazil. Several referenced information plans were overlapped and the total area was divided into five zones with different land use profiles, which were determined according to the conservation and preservation of native vegetation, occurrence of wet areas and springs, land use and management, eroded area recovery and occurrence of permanently preserved areas. The methodology proposed was suitable for environmental zoning of protected areas. This protocol can be applied to other areas by including additional variables such as social and economic parameters.

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“…and soil tillage had little impact on ameliorating general soil physical quality, although it most certainly increased soil loss during initial stages of pasture regrowth (Sparovek et al, 2007). As the pasture was yet on an initial stage of degradation, the main limitations were related to soil fertility (Macedo, 2005).…”

Section: Discussionmentioning

confidence: 99%

Short term changes on soil physical quality after different pasture renovation methods on a clayey oxidic Red Latosol

Tassinari

Dias

Casagrande

et al. 2015

Agraria

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Most of Brazilian agricultural land is occupied by pastures, which often show some degree of degradation. Grazing is usually associated to damages on soil structure because of soil compaction. The aim of this work was to evaluate short term changes on soil physical quality following different pasture renovation methods, including fertilization (FERT), conventional soil tillage (TILL) and two crop-livestock system (no-till and conventional tillage, respectively COTI and CONT), on a very clayey Red Latosol (Ustox), also comparing these to the original pasture and a nearby forest fragment. Bulk density and macroporosity were significantly different on the pasture sites (averaging 1.12 g cm -3 and 0.16 cm 3 cm -3 respectively) from that under the forest fragment (respectively 0.87 g cm -3 and 0.34 cm 3 cm -3 ); however, significant differences between the renovation methods and the original pasture were not observed. The load bearing capacity model (LBCM), which relates decrease on soil precompression stress (σ p ) with increase on water content (U), obtained for the original pasture, ORIG (σ p = 10 ), with the former being more resistant to compaction. When the ordinate pairs (U, σ p ) obtained from soil cores collected on the different renovation methods experimental plots were plotted on the LBCM from ORIG, an increase on soil strength could be noticed, but with small differences between renovation methods. This was because of higher stocking rates on FERT and TILL and corn harvest for silage production on COTI and CONT. Tillage failed to improve soil physical quality even on the short turn (only one growing season) and should be disregarded as a renovation method for pastures on initial stages of degradation, while soil fertility is the main limitation.Key words: load bearing capacity, precompression stress, soil compaction Alterações na qualidade física do solo no curto prazo após diferentes métodos de renovação de pastagens em um Latossolo Vermelho argiloso oxídico RESUMOAs pastagens ocupam a maior porção das terras agrícolas do Brasil e frequentemente apresentam algum grau de degradação. O pastejo animal geralmente está associado a danos à estrutura do solo, devido à compactação. O objetivo deste trabalho foi avaliar as mudanças no curto prazo na qualidade física de um Latossolo Vermelho muito argiloso, após diferentes métodos de renovação de pastagens, incluindo adubação (FERT), preparo convencional (TILL) e interação lavoura-pecuária (com preparo convencional do solo e em plantio direto, COTI e CONT respectivamente), comparando estes à pastagem original e a um fragmento de mata próximo. A densidade do solo e a macroporosidade nas áreas de pastagem (respectivamente 1,12 g cme 0,16 cm 3 cm -3 ) foram significativamente diferentes em comparação ao solo sob mata (respectivamente 0,87 g.cm -3 e 0,34); contudo, diferenças significativas entre os métodos de renovação e a pastagem original não foram observadas. O modelo de capacidade de suporte de carga (MCSC), que relaciona o decréscimo na pressão de pré-c...

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The risk of erosion in Brazilian cultivated pastures

Cited by 21 publications

References 12 publications

Enriched animal manure as a source of phosphorus in sustainable agriculture

Enriched animal manure as a source of phosphorus in sustainable agriculture

Erosion Risk Mapping Applied to Environmental Zoning

Short term changes on soil physical quality after different pasture renovation methods on a clayey oxidic Red Latosol

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