Application of Bioassays in Studies on Phytotoxic Herbicide Residues in the Soil Environment

Sekutowski, T.

doi:10.5772/12931

Cited by 9 publications

(6 citation statements)

References 17 publications

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“…Therefore there is a high risk of damaging these plants as a result of drift of spray solutions from adjacent areas exposed to herbicides . Derivatives of phenoxy acids are biodegraded relatively quickly (the half‐life in soil varies from a few to several days), but they can move in the soil profile and penetrate into groundwater, thus contributing to environmental contamination . One way to limit the negative consequences of using herbicides belonging to the synthetic auxin group is to transform them into ionic liquids (ILs), which results in the formation of herbicidal ionic liquids (HILs).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Double‐Salt Herbicidal Ionic Liquids Comprising both 4‐Chloro‐2‐methylphenoxyacetate and trans‐Cinnamate Anions

et al. 2020

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The synthesis and characteristics are presented of novel double‐salt herbicidal ionic liquids (DSHILs) that contain 4‐chloro‐2‐methylphenoxyacetate and trans‐cinnamate anions. In the designed synthesis, an anion of natural origin and a herbicidal anion were combined with an amphiphilic bisammonium cation to obtain new DSHILs with high herbicidal activity while high biocompatibility is maintained. The NMR and HRMS spectral analysis confirmed that the target structures were formed. Furthermore, HPLC analyses indicated that, as assumed, both anions were present in equimolar amounts. Experiments regarding the herbicidal effectiveness confirmed that the synthesized DSHILs exhibited high biological activity. The solutions of DSHILs applied during greenhouse studies were characterized by a low contact angle (approx. 55–67°) and surface tension (approx. 32–35 mN m−1), which facilitated the contact of the active substance with the plant surface and penetration of the herbicide into the plant tissues.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Double‐Salt Herbicidal Ionic Liquids Comprising both 4‐Chloro‐2‐methylphenoxyacetate and trans‐Cinnamate Anions

et al. 2020

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“…The experiment was conducted in 2013-2014 using the 1 st generation bioassay (Sekutowski, 2011). The tests included 3 independent series of laboratory experiments with 3 repetitions in each series.…”

Section: Methodsmentioning

confidence: 99%

Assessment of allelopathic potential of Solidago gigantea Aiton on dry weight of Echinochloa crus-galli (L.) Beauv. and Amaranthus retroflexus L.

Sekutowski¹,

Domaradzki²,

Jezierska-Domaradzka³

et al. 2019

JCEA

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Laboratory analyses using the 1 st generation bioassay were conducted in the years 2013-2014 to investigate the allelopathic potential of wateralcoholic and aqueous extracts from dry weight of rhizomes and roots as well as stems and leaves of Solidago gigantea. Analysed acceptors were two weed species, i.e. monocotyledonous Echinochloa crus-galli and dicotyledonous Amaranthus retroflexus. When the acceptors (E. crus-galli and A. retroflexus) reached the 2-leaf stage (BBCH 12) they were sprayed with wateralcoholic and aqueous extracts (at concentrations of 12.5%, 10%, 5% and 2.5%) obtained from the donor, i.e. S. gigantea. Results indicate an inhibitory effect of wateralcoholic extracts from aboveground parts (leaves and stems) of S. gigantea in relation to dry weight of E. crus-galli and A. retroflexus. The volume of dry weight reduction in acceptors was dependent on the concentration of extracts produced from the donor plant S. gigantea. Dry weight of E. crus-galli and A. retroflexus was reduced most effectively by two concentrations: 12.5% and 10%. In turn, aqueous extracts from rhizomes and roots of S. gigantea, irrespective of the applied concentration, caused an increase in dry weight of E. crus-galli and A. retroflexus. Only aqueous extracts produced from leaves and stems of S. gigantea, irrespective of their concentration, reduced dry weight in only E. crus-galli.

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“…In the first stage of the investigation, a greenhouse experiment was established using a modified first-generation phytotest (Sekutowski 2011). Soybean plants of Pollux variety were used for the study.…”

Section: Methodsmentioning

confidence: 99%

Effect of the type of preparation and spraying parameters on zinc deposition on soybean plants

Dereń

Szewczyk

Sekutowski

2018

Int. J. Environ. Sci. Technol.

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The aim of the research was to determine deposition of zinc on soybean plants sprayed in three development phases: 2, 4 and 6 specific leaves. The spraying involved the following parameters: speed was 0.86 m s −1 , pressure: 0.20 and 0.28 MPa, standard nozzles: flat fan XR 110-02 and double flat fan DF 120-02. Soybean plants of Pollux variety were sprayed, with foliar fertilizer Mikrovit Zinc 112 and the preparation containing zinc nanoparticles. The dose of both preparations amounted 160 g Zn ha −1. After spraying, the plants were cut, dried, and mineralized. Zinc content in the samples was measured with atomic absorption spectrometer. The highest values of zinc deposition soybean plants were recorded DF 120-02 nozzle, regardless the spraying parameters, as well as soy development phase. The use of nanozinc and DF 120-02 nozzle in 4 leaves development phase caused higher values of zinc deposition 12.5% (0.20 MPa) and 15% (0.28 MPa), while in 6 leaves phase, the mentioned values increased by 13% (0.20 MPa) and 3.6% (0.28 MPa), as compared to the ones obtained for the foliar fertilizer. The highest values of nanozinc deposition using DF 120-02 nozzles were recorded at 0.20 MPa pressure: 179.1 mg kg −1 (2 leaves phase) and 178.0 mg kg −1 (6 leaves phase), as well as at 0.28 MPa pressure: 127.7 mg kg −1 (4 leaves phase). In comparison with flat fan nozzle XR 110-02, the use of double flat fan nozzle DF 120-02 increased zinc deposition by 151, 110, and 90%, respectively. Statistical analysis of the test results showed a significant effect of the type of nozzle used for spraying on the value of zinc deposition on soybean plants.

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Application of Bioassays in Studies on Phytotoxic Herbicide Residues in the Soil Environment

Cited by 9 publications

References 17 publications

Synthesis and Characterization of Double‐Salt Herbicidal Ionic Liquids Comprising both 4‐Chloro‐2‐methylphenoxyacetate and trans‐Cinnamate Anions

Synthesis and Characterization of Double‐Salt Herbicidal Ionic Liquids Comprising both 4‐Chloro‐2‐methylphenoxyacetate and trans‐Cinnamate Anions

Assessment of allelopathic potential of Solidago gigantea Aiton on dry weight of Echinochloa crus-galli (L.) Beauv. and Amaranthus retroflexus L.

Effect of the type of preparation and spraying parameters on zinc deposition on soybean plants

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