Environmental behavior of glyphosate in soils

Padilla, Joshua; Selim, H. M.

doi:10.1016/bs.agron.2019.07.005

Cited by 20 publications

(9 citation statements)

References 137 publications

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“…Despite this, there is still discussion about the harmfulness of, e.g. one of the most popular herbicides in the world, whose active substance is glyphosate ([N-(phosphonomethyl) glycine]) (Silva et al 2018;Myers et al 2016;Benbrook 2019;Padilla and Selim 2020;Beckie et al 2020;Kudsk and Mathiassen 2020;Rogacz et al 2020). Generally, a lot of original publications by authors from various scientific and research centres as well as literature reviews indicate a relationship between the use of plant protection products and the increased risk of developmental disorders, cancer diseases, etc.…”

Section: Introductionmentioning

confidence: 99%

The use of pesticides in Polish agriculture after integrated pest management (IPM) implementation

Piwowar

2021

Environ Sci Pollut Res

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The aim of the conducted study was to characterize the attitudes and practices of Polish farmers in the area of performing chemical plant protection treatments. A particular attention was paid to identifying the relationship between the direction of changes in the volume of chemical plant protection product consumption and selected attributes of farms. The main time range of the analyses covered the period of 2013–2017. Statistical data and results of representative surveys carried out on a sample of 1101 farms in Poland were used in the research process. Due to the large number of variants of the analysed variables, a multiple correspondence analysis was used, which made it possible to determine the correlation between the examined features (direction of changes in pesticide use relative to the farm area, economic size of the farm and location of the farm). Statistical analysis showed the existence of strong relationships between the physical (1) and economic (2) size of farms and the direction of changes in pesticide consumption ((1) φ2 = 0.0907; (2) φ2 = 0.1141)). According to empirical studies, the reduction of pesticide consumption took place mainly on the smallest farms. The implementation of the integrated plant protection directive has not resulted in significant changes in the form of reduced pesticide use in large-scale field crops. This raises the need to modify the strategy and model of crop protection in large-scale field crops in Poland.

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Section: Introductionmentioning

confidence: 99%

The use of pesticides in Polish agriculture after integrated pest management (IPM) implementation

Piwowar

2021

Environ Sci Pollut Res

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“…However, overall changes in the soil microbial communities caused by glyphosate tend to be transient and not last for more than a few days (Ratcliff et al 2006). Still, microbiological studies of glyphosate impact in soil bacteria are often contradictory (Liu et al 2018, Padilla andSelim 2020). We acknowledge that these impacts could have been magnified if we had used soil samples obtained more superficially, where glyphosate activity should be higher due to its lower mobility in the soil profile, instead of using a homogenized, 0-10 cm depth soil sample.…”

Section: Discussionmentioning

confidence: 99%

A comprehensive experimental assessment of glyphosate ecological impacts in riparian forest restoration

Florido

Regitano

Andrade

et al. 2021

Ecological Applications

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Competition with invasive grasses is one of the most important drivers of tree planting failures, especially in tropical forests. A widely disseminated weeding approach has been glyphosate spraying, the most used herbicide globally in forestry and ecosystem restoration. However, glyphosate use in restoration is highly controversial and requires further studies to elucidate its effects on restoration processes and the environment. We evaluated the use of glyphosate in riparian forest restoration and its impacts on tree planting costs, weed control efficiency, planted seedling performance, herbaceous and woody species regeneration, soil bacteria, and environmental contamination, using mowing treatments as a reference and based on a controlled experiment established in the Brazilian Atlantic Forest. Glyphosate spraying reduced by one‐half and one‐third the accumulated aboveground biomass of, respectively, weeds in general and of the invasive grass Urochloa decumbens compared to mowing treatments, and it reduced the cost by half. The performance of planted tree seedlings was markedly favored by glyphosate spraying compared to mowing treatments, as expressed by improved seedling height (~twice higher), crown area (~5× higher), and basal area (~5× higher); the regeneration of both native woody and ruderal herbaceous plants were also enhanced. Neither glyphosate nor its metabolite Aminomethylphosphonic acid (AMPA) residues were detected in either water runoff or soil samples, but they were found at relatively high concentrations in the runoff sediments (from 1.32 to 24.75 mg/kg for glyphosate and from 1.75 to 76.13 mg/kg for AMPA). Soil bacteria communities differed before and after glyphosate spraying in comparison to mowing plots (without glyphosate). Glyphosate spraying was far more cost effective than mowing for controlling U. decumbens and greatly improved the performance of planted tree seedlings and natural regeneration, while not leaving residues in soil and water. However, the changes in the structure of bacterial communities and high concentration of glyphosate and AMPA residues in runoff sediments highlight the need for caution when using this herbicide in riparian buffers. We present alternatives for reducing glyphosate use and minimizing its risks in tree planting initiatives.

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“…Microbial communities in the soil environment play an important role in the Biogeochemistry cycle of many important soil elements [20,21]. It was found that herbicides residues changed the soil microflora and had a potentially long-term effect on the function of agricultural soils [22,23,24,25]. Most studies have shown that GP has no or transient stress effect on soil microbial community [26,27,28,29,30,31], but some studies have shown significant adverse effects [32,33,34].…”

Section: Of 15mentioning

confidence: 99%

Impacts of Combined Exposure to Glyphosate and Diquat on Microbial Community Structure and Diversity in a Lateritic Paddy Soil

He¹,

Wu²,

Tan³

et al. 2023

Preprint

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As two commonly-used non-selective herbicides, glyphosate (GP) and diquat (DQ) are easily co-resided in lateritic paddy soil due to the rich iron/aluminum oxides, nevertheless there is limited information on their co-impact on microbial diversity and community structure in this type soil. In this study, the short-term effects of combined GP and DQ on soil microbial diversity and community structure shifts were investigated in lateritic paddy soil from a tropical agricultural region (Hainan, China) based on 16S rRNA and ITS high-throughput sequencing technology. The results showed that mixed herbicides promoted the abundance of Streptomyces in bacteria (0.45-1.84%) and Curvularia in fungi (0.01-5.85%), while GP and DQ had inhibitory effects on the abundance of Streptomyces (0.13-2.21%) and Curvularia (0.03-1.13%), which were significantly different with their single exposure (p < 0.05); the combined application of the two herbicides aggravate the adverse effect on the diversity of soil fungal community (p < 0.05), although their mixture did not have a greater impact on the soil bacteria abundance/diversity and fungi abundance (p > 0.05). Results suggested that the combined application of GP and DQ affected the fungal diversity although they did not cause other significant negative effects on soil microorganisms, hinting that more attention should be paid to the mixed effect caused by GP and DQ on specific fungal populations in lateritic paddy soil.

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Environmental behavior of glyphosate in soils

Cited by 20 publications

References 137 publications

The use of pesticides in Polish agriculture after integrated pest management (IPM) implementation

The use of pesticides in Polish agriculture after integrated pest management (IPM) implementation

A comprehensive experimental assessment of glyphosate ecological impacts in riparian forest restoration

Impacts of Combined Exposure to Glyphosate and Diquat on Microbial Community Structure and Diversity in a Lateritic Paddy Soil

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