Effect of composting and soil type on dissipation of veterinary antibiotics in land-applied manures

Chen, Chaoqi; Ray, Partha Pratim; Knowlton, Katharine F.; Pruden, Amy; Xia, Kang

doi:10.1016/j.chemosphere.2017.12.161

Cited by 53 publications

(29 citation statements)

References 56 publications

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“…The relative abundance of tet (W) correlated positively with chlortetracycline, suggesting co‐occurrence from the same source and/or selection pressure. Our previous soil microcosm study suggested that manure‐borne chlortetracycline was maintained at a level ranked “high” in terms of potential to exert selection pressure, up to 120 d after manure application (Chen et al, 2018). In addition, tet (W) was also positively correlated with sulfamethazine and tylosin.…”

Section: Resultsmentioning

confidence: 99%

“…Concentrations of antibiotics in soils were determined using solid‐phase extraction coupled with liquid chromatography tandem mass spectrometry following previously published procedures with minor modifications (Chen et al, 2018; Ray et al, 2017). The details of antibiotic extraction and quantification are provided in Supplemental Text S1.…”

Section: Methodsmentioning

confidence: 99%

“…Although composting has been proposed as a means to reduce antibiotic levels in manure prior to land application, recent studies have indicated that it cannot completely remove antibiotics (Dolliver et al, 2008; Ray et al, 2017). Therefore, further barriers to the release and spread of antibiotics into soils may be advisable in situations where manure‐derived amendments are land applied (Chen et al, 2018).…”

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confidence: 99%

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Antibiotics and Antibiotic Resistance Genes in Bulk and Rhizosphere Soils Subject to Manure Amendment and Vegetable Cultivation

et al. 2018

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There is interest in understanding effects of amending soil with manure in a cultivation setting and if composting can provide benefits. Raw or composted manure from cattle administered with and without sulfamethazine, chlortetracycline, and tylosin was amended to loamy sand and silty clay loam soils, where lettuce (Lactuca sativa L.), radish (Raphanus sativus L.), and broccoli (Brassica oleracea L. var. italica) were cultivated and compared with those grown in soil amended with fertilizer as a control. Upon plant maturation, rhizosphere and bulk soils were analyzed for antibiotics, and sul1, ermB, tet(W), and intI1 genes were quantified. Antibiotic concentrations in compost‐amended soils were below detection limits. For soils amended with manure containing antibiotics, sulfamethazine ranged from 1.1 to 3.1 μg kg−1 in the bulk soils but was below detection limits in the rhizosphere soils. Chlortetracycline (2.8–9.3 μg kg−1) was two times lower in the rhizosphere than in the bulk soil. Levels of tylosin in the rhizosphere soil were similar to the bulk soil. Soil texture or vegetable type did not have significant influence on antibiotic concentration differences between the bulk and rhizosphere soils. Relative abundances of tet(W) and intI1 in the fertilizer‐amended soil were significantly lower than in those amended with manure or compost (p < 0.05), whereas ermB was not detected in any soils. Rhizosphere zone has no significant effect on the detected antibiotic resistance genes. It is suggested that plant roots may have a substantial effect on the fate of certain antibiotics in manure‐amended fields, but less of an effect on antibiotic resistance and mobility genes. Core Ideas Composting reduces antibiotic inputs to soils relative to direct manure application. Antibiotic concentrations in manure generally decrease in amended soils. Dissipation of sulfamethazine and chlortetracycline is enhanced in the rhizosphere. Antibiotic fate in bulk and rhizosphere soils was similar for three vegetables and two soils. Resistance and mobility genes were greater in manure ‐ than fertilizer‐amended soil.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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confidence: 99%

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Antibiotics and Antibiotic Resistance Genes in Bulk and Rhizosphere Soils Subject to Manure Amendment and Vegetable Cultivation

et al. 2018

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“…The half‐lives in the second phase were 5 and 1.7 times those in the first phase for radish and lettuce, respectively. It suggested that a portion of pirlimycin in manure could be immediately bioavailable and dissipated quickly within 29 d (first phase) after land application, whereas the remaining portion was released slowly from the manure as dissipation continued into the second phase (Kulesza et al, 2016; Chen et al, 2018). …”

Section: Resultsmentioning

confidence: 99%

“…Sunlight can provide photons with sufficient energy to break down the chemical structure of pirlimycin (NADA, 1993). Besides abiotic degradation, pirlimycin can also be absorbed to binding sites in either organic matter (such as humic acid) or clay content in soils (Ray et al, 2017; Chen et al, 2018). …”

Section: Resultsmentioning

confidence: 99%

Fate of Pirlimycin and Antibiotic‐Resistant Fecal Coliforms in Field Plots Amended with Dairy Manure or Compost during Vegetable Cultivation

et al. 2018

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Identification of agricultural practices that mitigate the environmental dissemination of antibiotics is a key need in reducing the prevalence of antibiotic-resistant bacteria of human health concern. Here, we aimed to compare the effects of crop (lettuce [ L.] or radish [ L.]), soil amendment type (inorganic fertilizer, raw dairy manure, composted dairy manure, or no amendment), and prior antibiotic use history (no antibiotics during previous lactation cycles vs. manure mixed from cows administered pirlimycin or cephapirin) of manure-derived amendments on the incidence of culturable antibiotic-resistant fecal coliforms in agricultural soils through a controlled field-plot experiment. Antibiotic-resistant culturable fecal coliforms were recoverable from soils across all treatments immediately after application, although persistence throughout the experiment varied by antibiotic class and time. The magnitude of observed coliform counts differed by soil amendment type. Compost-amended soils had the highest levels of cephalosporin-resistant fecal coliforms, regardless of whether the cows from which the manure was derived were administered antibiotics. Samples from control plots or those treated with inorganic fertilizer trended toward lower counts of resistant coliforms, although these differences were not statistically significant. No statistical differences were observed between soils that grew leafy (lettuce) versus rooted (radish) crops. Only pirlimycin was detectable past amendment application in raw manure-amended soils, dissipating 12 to 25% by Day 28. Consequently, no quantifiable correlations between coliform count and antibiotic magnitude could be identified. This study demonstrates that antibiotic-resistant fecal coliforms can become elevated in soils receiving manure-derived amendments, but that a variety of factors likely contribute to their long-term persistence under typical field conditions.

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Effect of temperature, pH, and soil texture on pirlimycin fate in dairy manure–amended soils

et al. 2022

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Antibiotics applied to soil through application of manure are of increasing concern due to their adverse environmental impacts, including their potential contribution to the development of antibiotic resistance in the environment. Two 90-d laboratory incubation studies were conducted to determine the effects of temperature (10 or 21 ˚C), pH (5, 7, 9), and soil texture (sandy loam, loam) on the persistence of two antibiotics (pirlimycin and cephapirin) applied to soils with dairy manure amendment. Dairy manure from treated and untreated cows was used as the source for this study. However, cephapirin was not detected in manure used for the study. Initial manure pH affected pirlimycin concentration of the manure, and there were differences in initial soil concentration between soil types. In the temperature experiment, pirlimycin concentration was significantly affected by temperature and soil type. In the 10 ˚C treatments, pirlimycin concentration initially decreased at 7 d but increased to levels similar to 0 d concentrations at 14 d, indicating possible deconjugation of pirlimycin ribonucleotide adducts in the manure applied. Although the loam soil type had a higher pirlimycin concentration in the temperature experiment at 0 d and 14 d, concentrations decreased below the sandy loam soil at 56 d and continued in the 90-d sampling period. Pirlimycin dissipation from dairy manure-amended soils was enhanced by higher temperature and finer soil texture, both of which could affect development of resistance genes if soil microbes are exposed to pirlimycin for longer periods of time.

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Effect of composting and soil type on dissipation of veterinary antibiotics in land-applied manures

Cited by 53 publications

References 56 publications

Antibiotics and Antibiotic Resistance Genes in Bulk and Rhizosphere Soils Subject to Manure Amendment and Vegetable Cultivation

Antibiotics and Antibiotic Resistance Genes in Bulk and Rhizosphere Soils Subject to Manure Amendment and Vegetable Cultivation

Fate of Pirlimycin and Antibiotic‐Resistant Fecal Coliforms in Field Plots Amended with Dairy Manure or Compost during Vegetable Cultivation

Effect of temperature, pH, and soil texture on pirlimycin fate in dairy manure–amended soils

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