A Comparison of Symmetrical and Asymmetrical Triazine Herbicides for Enhanced Degradation in Three Midwestern Soils

Parker, Ethan T.; Owen, Micheal D. K.; Bernards, Mark L.; Curran, William S.; Steckel, Lawrence E.; Mueller, Thomas C.

doi:10.1017/wsc.2018.41

Cited by 4 publications

(2 citation statements)

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“…After herbicides are incorporated in soil, their behavior and fate depend on many factors (soil properties, herbicide properties, weather conditions, etc.) (Parker et al, 2018). Our results show that the amounts of metribuzine decreased over time in both types of soil at all four concentrations tested.…”

Section: Discussionmentioning

confidence: 47%

Microbial activity in different soils in response to metribuzin treatment

et al. 2019

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The effect of metribuzin on soil microorganisms and their enzymatic activity, as well as the amount of metribuzin residues, greatly depend on the type of soil and its physico-chemical properties. A laboratory experiment was set up to determine the effects of metribuzin on different groups of microorganisms and dehydrogenase activity in loamy and sandy soils. The amounts of metribuzin residues in those soils were also determined. The following concentrations were tested: 12.0, 24.0, 120.0 and 1200.0 mg a.i. kg-1 soil. Samples were collected 3, 7, 14, 30 and 45 days after metribuzin application. Metribuzin acted inhibitively on total bacteria counts in both types of soil: 6.9% in loamy and 7.9% in sandy soils. Actinomycetes counts decreased over the first 14 days after metribuzin treatment by 15.6% in loamy and 8.1% in sandy soil. However, starting with the 30 th post-treatment day, their number either increased or remained at the control level. Fungi counts increased by 6.0% seven days after the application of the two highest concentrations. In sandy soil, fungi counts were significantly reduced by 29%. Metribuzin treatment significantly reduced the activity of dehydrogenase enzyme in both types of soil. Only the highest test concentration applied to the sandy soil showed a stimulating effect (33.2 %). Degradation data showed that the measured amounts of metribuzin decreased over time in both types of soil at all four test concentrations. The results showed that the extracted amounts of metribuzin active ingredient at all its test concentrations were greater in the sandy type of soil. Loamy soil was shown to have a better sorption capacity due to its higher contents of organic matter and clay.

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Section: Discussionmentioning

confidence: 47%

Microbial activity in different soils in response to metribuzin treatment

et al. 2019

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“…Triazine-based herbicides are used world-wide for the control of annual grasses and broadleaf weeds in various crops, and account for an estimated 30% of agricultural herbicides [1]. Triazine herbicides have a common triazine ring (Fig.…”

Section: Introductionmentioning

confidence: 99%

Multiple detection of 15 triazine herbicides by gold nanoparticle based-paper sensor

Guo

Zhao

et al. 2022

Nano Res.

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Triazine herbicides have been widely used in agriculture, but their residues can harm the environment and human health. To help monitor these, we have developed an effective immunochromatographic strip test that can simultaneously detect 15 different triazines in grain samples (including ametryn, cyprazine, atraton, prometon, prometryn, atrazine, propazine, terbuthylazine, simetryn, trietazine, secbumeton, simazine, desmetryn, terbumeton and simetone). Based on our optimization procedure, the visual limit of detection (vLOD) for these triazines was found to be 2–10 ng/mL in assay buffer, and 0.02−0.1 mg/kg in grain samples. Four different grain matrices including corn, brown rice, wheat, and sorghum were studied and the test results showed no significant differences between the 15 triazines analyzed using this method. This test is simple, convenient, rapid, and low-cost, and could be an effective tool for primary screening of triazine residues in grain samples. Electronic Supplementary Material Supplementary material (UV–vis spectra of 15 nm-GNP; K2CO3 usage; cross reactivity; strip images for spiked rice, wheat and sorghum samples, UPLC-MS/MS parameters; gray values for strip optimization) is available in the online version of this article at 10.1007/s12274-022-4164-2.

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