Dynamics of glyphosate and aminomethylphosphonic acid in a forest soil in Galicia, north-west Spain

Veiga, F; Zapata, J.M; Fernández-Marcos, María Luisa; Álvarez‐Rodríguez, Esperanza

doi:10.1016/s0048-9697(00)00839-1

Cited by 103 publications

(89 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This demonstrates that glyphosate moved from the surface layer, where it was applied, down to a depth of about 0.80 m, or, alternatively, this level may be a residue from an earlier application, six months before. Glyphosate residues have been found in other studies at depths of 0.15 m (Newton et al, 1994), 0.30 m (Veiga et al, 2001), 0.40 m (Litz et al, 2011) and 1.00 m .…”

Section: Glyphosate Mobilitysupporting

confidence: 59%

“…The high levels of P and amount of soil organic matter (SOM) (Figure 2) may have resulted in glyphosate adsorption since the herbicide molecules interact with SOM and the slurry applied, thus generating linked residues mobilized in the soil (Veiga et al, 2001). This phenomenon of adsorption to soil constituents does not rule out the possibility that, as time passes, the herbicide returns to solution by desorption, making it available for leaching processes (Correia et al, 2007).…”

Section: Glyphosate Mobilitymentioning

confidence: 99%

“…One possible explanation for this is that, in addition to herbicide mobility, greater microbial activity in the surface layer leads to glyphosate degradation in this layer (Veiga et al, 2001). At the mean depth of 0.40 m, concentrations increased up to the 7 th day after application, reaching a maximum concentration of 0.6857 mg L -1 , and decreased to a final concentration of 0.0045 mg L -1 .…”

Section: Glyphosate Mobilitymentioning

confidence: 99%

“…Movement of herbicides through the soil is influenced by the type of organic material, pH, composition and distribution of soil particle size, bulk density, and the size and distribution of soil pores (Rossi et al, 2005). Glyphosate has a halflife (T 1/2 ) of 32 days with moderate persistence (Giesy et al, 2000) and, under natural conditions, it is watersoluble, percolating easily through the soil profile with internal drainage water (Veiga et al, 2001;Amarante Junior et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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

Oliveira

Pinheiro

Veiga³

2014

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

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...

show abstract

Section: Glyphosate Mobilitysupporting

confidence: 59%

Section: Glyphosate Mobilitymentioning

confidence: 99%

Section: Glyphosate Mobilitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Oliveira

Pinheiro

Veiga³

2014

Rev. Bras. Ciênc. Solo

View full text Add to dashboard Cite

show abstract

“…It is known that glyphosate adsorbs strongly in the soil, through hydrogen bonds in organic matter and by anion exchange processes in the clay minerals, iron and aluminium oxides (Aubin & Smith, 1992;Haney et al, 2000;Veiga et al, 2001). The role of adsorption on the glyphosate bioavailability and biodegradation is not completely conclusive, although Veiga et al (2001) state that the adsorbed glyphosate is more persistent in the soil, because its degradation is slower than that of the free herbicide.…”

Section: Introductionmentioning

confidence: 99%

Influence of repeated applications of glyphosate on its persistence and soil bioactivity

Andréa

Peres

Luchini

et al. 2003

Pesq. agropec. bras.

View full text Add to dashboard Cite

-Pesticide degradation studies are essential to evaluate its impact in the environment and on non-target organisms. The effect of repeated soil applications of the herbicide glyphosate on its dissipation and on soil microorganisms was studied by radiometric and microbial techniques. Results indicated fast dissipation of the [ 14 C]-glyphosate or [ 14 C]metabolites extractable residues (half-life of 0.92±0.29 month), but increasing half-lives of total mineralization ranging from 2.2 to 3.4 months as the number of applications increased from 1 to 4. No significant correlation was found between 14 CO 2 production and dehydrogenase activity.Index terms: pesticide residues, mineralization, dehydrogenases, soil treatment. Influência de repetidas aplicações de glifosato na sua persistência e na bioatividade do soloResumo -Estudos sobre degradação de pesticidas são essenciais à avaliação do impacto que causam no ambiente e em organismos não-alvo. Avaliou-se o efeito de repetidas aplicações do herbicida glifosato em solo na sua dissipação e em microrganismos do solo, por técnicas radiométricas e microbianas. Os resultados indicaram dissipação rápida dos resíduos extraíveis de glifosato marcado com 14 C ou de metabólitos contendo 14 C (meia-vida de 0,92±0,29 mês), mas meia-vida crescente de 2,2 a 3,4 meses para mineralização total, de acordo com o aumento de 1 a 4 aplicações. Não foi encontrada correlação estatisticamente significativa entre a atividade da desidrogenase e a produção de 14 CO 2 .Termos para indexação: resíduo de pesticida, mineralização, desidrogenase, tratamento do solo.

show abstract

Mobility and leaching of glyphosate: a review

Vereecken

2005

Pest Management Science

343

236

View full text Add to dashboard Cite

There is currently concern that glyphosate, a strongly sorbing non-selective herbicide which is widely used in Europe, may be leached from the root zone into drainage water and groundwater. The purpose of this review is to present and discuss the state of knowledge with respect to the mobility and leaching of glyphosate from agricultural soils. Specific attention is given to the adsorption behaviour of glyphosate and the analysis of available studies on glyphosate transport. In addition, there are a number of experimental and numerical studies indicating that other strongly sorbing substances may be transported rapidly to the sub-surface. The experimental studies analysed in the paper encompass column-, lysimeter- and field-scale experiments on glyphosate transport. The experimental findings, combined with transport studies on other strongly sorbing pesticides in the literature, support the hypothesis that transport of glyphosate may be caused by an interaction of high rainfall events shortly after application on wet soils showing the presence of preferential flow paths. Concentrations of glyphosate in European groundwater have been reported occasionally but monitoring is still limited.

show abstract

Dynamics of glyphosate and aminomethylphosphonic acid in a forest soil in Galicia, north-west Spain

Cited by 103 publications

References 32 publications

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

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

Influence of repeated applications of glyphosate on its persistence and soil bioactivity

Mobility and leaching of glyphosate: a review

Contact Info

Product

Resources

About