Propriedades químicas de um latossolo vermelho sob plantio direto e adubação com esterco de suínos

Scherer, Eloi Erhard; Baldissera, Ivan Tadeu; Nesi, Cristiano Nunes

doi:10.1590/s0100-06832007000100013

Cited by 57 publications

(58 citation statements)

References 11 publications

(12 reference statements)

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“…When 100 m 3 ha -1 of UWC was applied for two consecutive years, SOC and TN increased significantly, compared to mineral fertilization (Table 5). These results are in agreement with those of Scherer et al (2007), who evaluated the effect of annual pig slurry application on an Oxisol for three consecutive years. The authors observed an upward trend in organic matter content in the surface layer (0.0-0.10 m), which they explained by the absence of incorporation of manure and plant residues into the soil, making the mineralization of organic compounds slower and gradual in the top few centimeters of the surface layer.…”

Section: Resultssupporting

confidence: 92%

Changes in a Rhodic Hapludox under no-tillage and urban waste compost in the northwest of Rio Grande do Sul, Brazil

Moraes

Silva

Cherubin

et al. 2014

Rev. Bras. Ciênc. Solo

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SUMMARYThe use of urban waste compost as nutrient source in agriculture has been a subject of investigation in Brazil and elsewhere, although the effects on soil physical and chemical properties and processes are still poorly known. The aim of this study was to evaluate the effect of application of urban waste compost and mineral fertilizer on soil aggregate stability and organic carbon and total nitrogen content of a Rhodic Hapludox under no-tillage in the northwestern region of Rio Grande do Sul, Brazil, in the 2009/2010 and 2010/2011 growing seasons. The experiment was arranged in a 2 × 6 (seasons and fertilization) factorial in a randomized complete block design with four replications. The factor time consisted of two growing seasons (sunflower in 2009/10 and maize in 2010/11) and the factor fertilization of five rates of urban waste compost (0, 25, 50, 75 and 100 m 3 ha -1 ), and mineral fertilizer. Soil samples were collected from the 0.0-0.10 m layer to determine aggregate stability (mean weight and geometric diameter), soil organic carbon (SOC) and total nitrogen (TN). Rates of up to 75 m 3 ha -1 of urban waste compost, after two years of application to no-tillage maize and sunflower, improved aggregation compared to mineral fertilization in a Rhodic Hapludox. After the second crop, the SOC and TN contents increased linearly with the levels of urban waste compost.Index terms: soil organic carbon, aggregate stability, total nitrogen, soil structure, organic manure.( A utilização de composto de lixo urbano como fonte de nutrientes para a agricultura vem sendo investigada; entretanto, as alterações físicas do solo ainda são pouco conhecidas. Objetivouse avaliar a influência do uso de composto de lixo urbano e da adubação mineral na estabilidade de agregados e nos teores de carbono orgânico e nitrogênio total de um Latossolo Vermelho, em sistema plantio direto na região noroeste do Rio Grande do Sul. Utilizou-se o delineamento de blocos ao acaso, em esquema fatorial 6 × 2 (adubação e épocas), com quatro repetições. O fator épocas de avaliação constituiu-se dos anos agrícolas de 2009/10 (girassol) e 2010/11 (milho). O fator adubação foi composto por cinco doses de composto de lixo urbano (0, 25, 50, 75 e 100 m 3 ha -1 ), além de um tratamento adicional com fertilização mineral. Na camada de 0,0-0,10 m, foram determinados a estabilidade de agregados (diâmetro médio geométrico e ponderado), os teores de carbono orgânico (CO) e o nitrogênio total (NT). A utilização de doses crescentes de composto de lixo urbano favoreceu melhorias na agregação do solo, em relação à fertilização mineral. A utilização de até 75 m 3 ha -1 de composto de lixo urbano, após dois anos de aplicações em cultivos agrícolas com milho e girassol em um Latossolo Vermelho, sob sistema plantio direto, promoveu melhorias na agregação do solo, quando comparada à fertilização mineral. O teor de CO e o de NT, após o segundo cultivo, apresentaram incrementos lineares, em relação às doses de composto de lixo urbano.Termos de indexação: carbono orgâ...

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Section: Resultssupporting

confidence: 92%

Changes in a Rhodic Hapludox under no-tillage and urban waste compost in the northwest of Rio Grande do Sul, Brazil

Moraes

Silva

Cherubin

et al. 2014

Rev. Bras. Ciênc. Solo

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“…In addition, the ammonia nitrification process gives rise to liquid release of H + ions and reduction in soil pH when the nitrate is not absorbed in the same layer as that where the process occurs (Aita et al, 2007). In deeper layers, no significant differences in pH in water were found among the rates of pig slurry application, in agreement with studies in similar soils by Muriashi et al (2011) and Scherer et al (2007). They also found no significant changes in other properties related to soil acidity.…”

Section: Soil Chemical Propertiessupporting

confidence: 89%

“…However, no appreciable migration to deeper layers was observed, even where levels of P were high in the superficial layers, which could be due to the high soil capacity for P adsorption. Similar results were found by Scherer et al (2007), who looked at the effects of pig slurry applications in a similar Hapludox, also managed in a no-till system, and by Queiroz et al (2004), who studied the effects of pig slurry application on pastures in an Ultisol soil in the State of Rio Grande do Sul, Brazil. The P added to soil as pig slurry is adsorbed in it at specific exchange sites.…”

Section: Soil Chemical Propertiessupporting

confidence: 74%

Effects of pig slurry application on soil physical and chemical properties and glyphosate mobility

Oliveira

Pinheiro

Veiga³

2014

Rev. Bras. Ciênc. Solo

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SUMMARYPig slurry applied to soil at different rates may affect soil properties and the mobility of chemical compounds within the soil. The purpose of this study was to evaluate the effects of rates of pig slurry application in agricultural areas on soil physical and chemical properties and on the mobility of glyphosate through the soil profile. The study was carried out in the 12 th year of an experiment with pig slurry applied at rates of 0 (control), 50, 100 and 200 m 3 ha -1 yr -1 on a Latossolo Vermelho distrófico (Hapludox) soil. In the control, the quantities of P and K removed by harvested grains were replaced in the next crop cycle. Soil physical properties (bulk density, porosity, texture, and saturated hydraulic conductivity) and chemical properties (organic matter, pH, extractable P, and exchangeable K) were measured. Soil solution samples were collected at depths of 20, 40 and 80 cm using suction lysimeters, and glyphosate concentrations were measured over a 60-day period after slurry application. Soil physical and chemical properties were little affected by the pig slurry applications, but soil pH was reduced and P levels increased in the surface layers. In turn, K levels were increased in sub-surface layers. Glyphosate concentrations tended to decrease over time but were not affected by pig slurry application. The concentrations of glyphosate found in different depths show that the pratice of this application in agricultural soils has the potential for contamination of groundwater, especially when the water table is the surface and heavy rains occur immediately after application.Index terms: soil fertilization, physical and chemical properties, pollutant transport, pesticide.(1) Received for publication on April 24, 2013 and approved on June 9, 2014. RESUMO: EFEITOS DE DOSES DE DEJETOS LÍQUIDOS DE SUÍNOS SOBRE OS ATRIBUTOS FÍSICOS E QUÍMICOS DO SOLO E SOBRE A MOBILIDADE DO GLIFOSATOOs dejetos líquidos de suínos são aplicados no solo, como fertilizantes, em diferentes doses. Isso pode interferir nos atributos do solo e na mobilidade de espécies químicas. Este trabalho teve por objetivo avaliar a influência das doses de dejeto líquido de suínos aplicadas em áreas agrícolas sobre os atributos químicos e físicos do solo e sobre a mobilidade de glifosato no perfil do solo. O trabalho foi realizado no 12º ano de condução de um experimento, com aplicação de dejeto líquido de suínos em Latossolo Vermelho distrófico, com doses anuais de 0, 50, 100 e 200 m 3 ha -1 ano -1 . Na testemunha (dose 0), houve reposição das quantidades de P e K exportados pelos grãos das culturas. Em cada parcela, foi realizada a determinação dos atributos físicos (densidade, porosidade, textura, condutividade hidráulica do solo saturado) e químicos (teor de matéria orgânica, pH, P extraível e K trocável) do solo. Amostras de solução do solo foram coletadas em seu perfil com o uso de lisímetros de sucção, sendo determinadas as concentrações de glifosato durante 60 dias. Os atributos físicos e químicos do solo foram pouco influenci...

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“…Plants in the treatment T1 and T7 showed P contents below the adequate range. This was expected, since P is an element of little mobility in the soil, which is the reason for its accumulation in the superficial layer, restricting its availability to plants (Scherer, 2007). It is known that P is a nutrient required in large amounts by plants and it is responsible for storage and permutation of genetic information, with function of energy transfer as a carrier and activator of amino acids (Malavolta et al, 1997).…”

Section: Resultsmentioning

confidence: 99%

Soybean nutritional status and seed physiological quality with swine wastewater

Passarin

Sampaio

Rosa

et al. 2016

Rev. bras. eng. agríc. ambient.

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Swine wastewater application is a practice that can become viable in agriculture, for minimizing fertilization costs and improving soil conditions. Therefore, it is essential to establish criteria that define appropriate application doses from the agronomic and environmental perspectives. The objective of this study was to evaluate the effects of swine wastewater doses associated with mineral fertilization on soybean nutritional status and physiological quality of seed. The experiment was conducted in the agricultural year of 2010/2011, using twenty-four drainage lysimeters in randomized block design in 4 x 2 factorial scheme, with four swine wastewater doses (0, 100, 200 and 300 m3 ha-1) applied before sowing, associated with presence and absence of mineral fertilization, in three replicates. Leaves at the flowering stage were collected for determinations of N, P, K+, Ca+2, Mg+2, Cu+2, Zn+2, Mn and Fe. Symptoms of toxicity and nutritional deficiency were observed in the crop. Furthermore, higher doses of swine wastewater caused lower physiological quality in soybean seeds.

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Propriedades químicas de um latossolo vermelho sob plantio direto e adubação com esterco de suínos

Abstract: RESUMO(1) Trabalho parcialmente financiado pelo CNPq. Recebido para publicação em agosto de 2005 e aprovado em novembro de 2006.

Cited by 57 publications

References 11 publications

Changes in a Rhodic Hapludox under no-tillage and urban waste compost in the northwest of Rio Grande do Sul, Brazil

Changes in a Rhodic Hapludox under no-tillage and urban waste compost in the northwest of Rio Grande do Sul, Brazil

Effects of pig slurry application on soil physical and chemical properties and glyphosate mobility

Soybean nutritional status and seed physiological quality with swine wastewater

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