The fungicide mancozeb affects soil invertebrates in two subtropical Brazilian soils

Carniel, Letícia Scopel Camargo; Niemeyer, Júlia Carina; Filho, Luís Carlos Iuñes de Oliveira; Alexandre, Douglas; Gebler, Luciano; Filho, Osmar Klauberg

doi:10.1016/j.chemosphere.2019.05.179

Cited by 31 publications

(18 citation statements)

References 25 publications

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“…Only one reported NOEC mortality value for H. aculeifer was comparable to that of the nematodes (1.05 mg a.i./kg dry soil [EFSA, 2020]). A study in tropical soils showed that mancozeb toxicity can vary with the type of soil (Camargo Carniel et al, 2019). Whereas the toxicity test with collembolans in Oxisol soil revealed comparable effect concentrations with the nematodes in the present study (EC50, LOEC, NOEC: 2.7, 2, <2 mg a.i./kg dry soil, respectively), almost no effects could be found in Ultisol soil (EC50, LOEC, NOEC: 100, 1000, >100, respectively).…”

Section: Resultsmentioning

confidence: 99%

“…In a field experiment, soil nematodes responded with a slight increase of densities after 90 days of exposure to mancozeb (as Dithane M‐45) at 10‐fold higher doses than recommended by the manufacturer (0.96 g a.i./m 2 ; assuming a mixing depth of 5 cm and a soil density of 1.5 g/cm 3 [Camargo Carniel et al, 2019], this corresponds to a nominal concentration of 13 mg a.i./kg dry soil; Petz & Foissner, 1989). In the present study, mancozeb (nonsignificantly) increased nematode densities at considerably higher nominal concentrations (≥89 mg a.i./kg dry soil, corresponding to real exposure concentrations of 8–11 mg a.i./kg dry soil).…”

Section: Resultsmentioning

confidence: 99%

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Nematode Community of a Natural Grassland Responds Sensitively to the Broad‐Spectrum Fungicide Mancozeb in Soil Microcosms

Höss

Reiff

Asekunowo

et al. 2022

Enviro Toxic and Chemistry

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Fungicides make up the largest part of total pesticide use, with the dithiocarbamate mancozeb being widely applied as a nonsystemic contact pesticide to protect a wide range of field crops against fungal diseases. Although nematodes are key drivers of soil functioning, data on effects of fungicides, and especially mancozeb, on these nontarget organisms are scarce. Therefore, the effects of mancozeb on a soil nematode community from a natural grassland were assessed in small-scale soil microcosms. Nematodes were exposed to mancozeb-spiked soil in six nominal concentrations (7-133 mg/kg dry soil) and analyzed after 14, 56, and 84 days in terms of densities, genus composition, and functional traits. Because this fungicide is known to quickly degrade in soils (50% degradation time <1 day), mancozeb concentrations were analyzed for all sampling occasions. Chemical analysis revealed considerably lower measured concentrations compared with the aimed nominal soil concentrations at the beginning of the exposure (1-18 mg/kg dry soil), suggesting fast degradation during the spiking process. Nevertheless, the native nematode community responded sensitively to the fungicide mancozeb, revealing lower no-observed-effect concentration and 10% effect concentration (EC10) values than reported for other soil invertebrates such as springtails and earthworms. Using the EC10 for the most sensitive nematode community endpoint (percentage of predators and omnivores: 1.2 mg/kg dry soil), the risk assessment exhibited a toxicity exposure ratio of 0.66 and, thus, a high risk of mancozeb for soil nematodes. Keeping in mind their abundance and their central roles in soil foodweb functioning, the demonstrated sensitivity to a widely applied fungicide underscores the relevance of the inclusion of nematodes into routine risk-assessment programs for pesticides.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Nematode Community of a Natural Grassland Responds Sensitively to the Broad‐Spectrum Fungicide Mancozeb in Soil Microcosms

Höss

Reiff

Asekunowo

et al. 2022

Enviro Toxic and Chemistry

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“…The indirect effect of the use of fungicides on the populations of springtails can be attributed to the elimination of many fungi, which serve as food for several species of springtails (Scheu & Folger, 2004;Sawahata, 2006). In addition, Carniel et al (2019), found that the application of the fungicide Mancozebe® reduces the survival and reproduction of springtails.…”

Section: Resultsmentioning

confidence: 99%

“…The phytosanitary products applied to the crop predecessor to soybean in the 2019/2020 harvest are shown in Table 2. The specific details regarding the applied phytosanitary products are necessary, as many of these products can reduce the populations of springtails (Frampton & Wratten, 2000;Carniel et al, 2019).…”

Section: Crop Managements Conducted During 2019 and 2020mentioning

confidence: 99%

Rotation/Succession Systems Affects Springtails (Hexapoda: Collembola) Abundance in Cash Crops Under No Tillage Cultivation

Camacho¹,

Hoshino²,

Guide³

et al. 2021

JAS

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Acknowledging the bio indicator importance of springtails (Hexapoda: Collembola) for soil quality, this study aimed to determine the abundance of these arthropods in different systems of rotation/succession with commercial and cover crops, while also verifying the agricultural factor associated to these arthropods’ population. In the Instituto de Desenvolvimento Rural do Paraná (IAPAR-EMATER), during six years, areas with differing crops in rotation/succession adopting the no-tillage system were studied. For each system, chemical analyses of the soil were conducted and the number of captured springtails in pitfall traps was counted. The phytosanitary products applied during the evaluations and the quantity of vegetal cover remaining after harvest were considered as well. No difference was found between the rotation/succession systems in relation to chemical soil attributes, however the largest number of springtails was found in crop covers from corn, Brachiaria sp., and canola. These crop covers, including wheat, resulted in the highest straw dry mass. When removing the system in which the predecessor crop had the highest quantities of fungicide application, a positive correlation (r = 0.63; p < 0.01) was found, between springtail abundance and highest amount of straw after the harvest. If no fungicide applications occur, the crops with the largest amount of vegetal cover favor springtail populations.

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“…Contudo, apesar de estar localizado em uma das regiões do país com maior disponibilidade de informações sobre qualidade da água de consumo humano (Barbosa et al, 2015;Oliveira et al, 2019), o Espírito Santo, apresenta um baixo número de municípios com dados para agrotóxicos e carências para operacionalização do sistema (Altoé, 2018 (Brasil, 2005(Brasil, , 2008(Brasil, , 2017 , 2020), mostra ligação a quedas na resposta imune de mexilhões a proliferação de patógenos oportunistas (Iori et al, 2019), e a distúrbios metabólicos em peixes após longa exposição (Li et al, 2017). O fungicida mancozebe, também amplamente consumido no Brasil, demostrou potencial de interferência na reprodução e desenvolvimento de invertebrados em solos brasileiros (Carniel et al, 2019) e também no sistema reprodutivo feminino em mamíferos, através de danos nas células granulosas do ovário (Paro et al, 2012). Lopez-Antia et al, 2018) encontraram evidências de que a ingestão de alimentos contaminados pelo fungicida flutriafol podem reduzir em até 50 % o tamanho da prole de algumas aves.…”

Section: Agrotóxicos Associados As Culturasunclassified

Mapeamento de áreas de risco de contaminação por agrotóxicos: um estudo de caso no estado do Espírito Santo, Brasil

Leite¹,

Pereira²,

Silva³

2020

RNGC

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RESUMOÉ sabido que os agrotóxicos são um importante pilar das práticas agrícolas contemporâneas, contudo, existem diversos efeitos negativos atrelados ao seu mau uso. Seus malefícios vão desde a deterioração da saúde humana até a degradação de componentes bióticos e abióticos dos ecossistemas. O presente estudo tem como objetivo a proposição de uma metodologia baseada em indicadores e Sistemas de Informação Geográfica para a identificação das culturas e áreas de risco de contaminação ambiental por agrotóxicos, assim como os principais agrotóxicos associados a tais culturas, utilizando o estado do Espírito Santo como estudo de caso. Fora consultadas bases de dados com o Sistema IBGE de Recuperação Automática e o Censo Agropecuário 2017 do Instituto Brasileiro de Geografia e Estatística; e as seções de agrotóxicos do Instituto Brasileiro de Meio Ambiente e Recursos Naturais Renováveis e do Instituto de Defesa Agropecuária e Florestal do Espírito Santo. Café, cana-de-açúcar, milho e banana se destacaram no cenário agrícola estadual. O café apresenta-se como a cultura com maior risco de contaminação associado, tendo 10 municípios inclusos na classe de alto risco. A banana por sua vez é a cultura com menor risco associado. Glifosato, mancozebe e flutriafol, ingredientes ativos amplamente consumidos no estado se encontram entre os 5 compostos mais vendidos dentre aqueles autorizados para cada uma das culturas. De modo geral, a metodologia proposta mostrou potencial na determinação das culturas e áreas de risco no estado, assim como dos principais ingredientes ativos associados as culturas, podendo auxiliar a gestão ambiental de seu território.

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The fungicide mancozeb affects soil invertebrates in two subtropical Brazilian soils

Cited by 31 publications

References 25 publications

Nematode Community of a Natural Grassland Responds Sensitively to the Broad‐Spectrum Fungicide Mancozeb in Soil Microcosms

Nematode Community of a Natural Grassland Responds Sensitively to the Broad‐Spectrum Fungicide Mancozeb in Soil Microcosms

Rotation/Succession Systems Affects Springtails (Hexapoda: Collembola) Abundance in Cash Crops Under No Tillage Cultivation

Mapeamento de áreas de risco de contaminação por agrotóxicos: um estudo de caso no estado do Espírito Santo, Brasil

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