Herbicide residues of pre-harvest burndown in cowpea bean (<i>Vigna unguiculata</i>) grains

Concenço, Germani; Vivian, Rafael; Ikeda, F. S.; Pizzutti, Ionara Regina; Vela, Giovana Milagros Espinoza; Ferracini, V. L.; Nora, Leonardo; Ceccon, G.; Concenço, F.I.G.R.

doi:10.1017/s0014479720000290

Cited by 5 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Dietary uptake of herbicide residues on harvested products have been shown [129,130], especially when herbicides (e.g., diquat) are used as desiccants prior to harvest. Such residues can be substantial, sometimes exceed maximal residue levels [131][132][133]. Using a qualitative analysis based on official hazard statements, we found a reduction in potential human toxicity risk from 2010 to 2019.…”

Section: Human Toxicology Assessmentmentioning

confidence: 91%

Reducing overall herbicide use may reduce risks to humans but increase toxic loads to honeybees, earthworms and birds

et al. 2022

View full text Add to dashboard Cite

Background Pesticide use has been associated with risks for human health and an overall decline in biodiversity. Although herbicides are the most commonly used pesticides worldwide, they have received less attention in this debate. We investigated the extent to which long-term trends in herbicide use in Austria influence potential toxic exposures to non-target organisms and potential risks to humans. We analyzed official sales data of 101 herbicide active ingredients (AIs) approved in Austria between 2010 and 2019 regarding their ecotoxicological properties based on lethal doses (LD50 and LC50) weighed by their persistence in the environment (DT50) for honeybees (Apis mellifera), earthworms (Eisenia fetida), and birds (Serinus serinus). Human health risks were qualitatively assessed based on official hazard statements for the AIs used. Results In Austria, herbicide amounts sold decreased significantly by 24% from 1480 to 1123 tonnes between 2010 and 2019. This also led to a considerable decrease in the amounts of AIs classified by H-statements of the EU Pesticides Database: − 71% acute inhalation toxicity, − 58% reproductive toxicity,− 47% specific target organ toxicity. Yet, 36% of herbicides used were still classified as highly hazardous pesticides according to the Pesticide Action Network. Surprisingly, over the same period, toxic loads to honeybees increased by 487% (oral exposure), while lethal toxic loads to earthworms increased by 498%, and to birds by 580%. This can be attributed to a shift toward the use of more acutely toxic and especially more persistent AIs. The most problematic AI for honeybees, earthworms, birds and humans was the highly persistent diquat. The further ranking of the most toxic herbicides varied considerably depending on the organism. It is important to note that this toxic load assessment, like official environmental risk assessments, evaluates the potential risk but not the actual fatalities or real-world exposure. Conclusions Our results show a trade-off between herbicide amounts and toxicological hazards to humans and other non-target organisms. These interdependencies need to be considered when implementing pesticide reduction targets to protect public health and biodiversity, such as the EU´s “farm-to-fork” strategy, which aims to reduce the amounts and risks of synthetic pesticides.

show abstract

Section: Human Toxicology Assessmentmentioning

confidence: 91%

Reducing overall herbicide use may reduce risks to humans but increase toxic loads to honeybees, earthworms and birds

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Consequently, no human population groups are completely unexposed to pesticides [ 5 ]. Excessive preharvest spraying with pesticides can lead to high levels of pesticide residues in plant tissues and crop seeds [ 6 , 7 ]. In addition, pesticides are frequently applied to stored crop seeds to prevent pest infestation and pathogen infection [ 8 ].…”

Section: Introductionmentioning

confidence: 99%

A new method based on melatonin-mediated seed germination to quickly remove pesticide residues and improve the nutritional quality of contaminated grains

Li,

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

In the present study, we attempted to use melatonin combined with germination treatment to remove pesticide residues from contaminated grains. High levels of pesticide residues were detected in soybean seeds after soaking with chlorothalonil (10 mM) and malathion (1 mM) for 2 hours. Treatment with 50 μM melatonin for 5 days completely removed the pesticide residues, while in the control group, only 61–71% of pesticide residues were removed from soybean sprouts. Compared with the control, melatonin treatment for 7 days further increased the content of ascorbic acid (by 48–66%), total phenolics (by 52–68%), isoflavones (by 22–34%), the total antioxidant capacity (by 37–40%), and the accumulated levels of unsaturated fatty acids (C18:1, C18:2, and C18:3) (by 17–30%) in soybean sprouts. Moreover, melatonin treatment further increased the accumulation of ten components of phenols and isoflavones in soybean sprouts relative to those in the control. The ability of melatonin to accelerate the degradation of pesticide residues and promote the accumulation of antioxidant metabolites might be related to its ability to trigger the glutathione detoxification system in soybean sprouts. Melatonin promoted glutathione synthesis (by 49–139%) and elevated the activities of glutathione-S-transferase (by 24–78%) and glutathione reductase (by 38–61%). In summary, we report a new method in which combined treatment by melatonin and germination rapidly degrades pesticide residues in contaminated grains and improves the nutritional quality of food.

show abstract

Multi-medium residues and ecological risk of herbicides in a typical agricultural watershed of the Mollisols region, Northeast China

Liu,

Li,

et al. 2024

Science of The Total Environment

View full text Add to dashboard Cite

Herbicide residues of pre-harvest burndown in cowpea bean (Vigna unguiculata) grains

Cited by 5 publications

References 20 publications

Reducing overall herbicide use may reduce risks to humans but increase toxic loads to honeybees, earthworms and birds

Reducing overall herbicide use may reduce risks to humans but increase toxic loads to honeybees, earthworms and birds

A new method based on melatonin-mediated seed germination to quickly remove pesticide residues and improve the nutritional quality of contaminated grains

Multi-medium residues and ecological risk of herbicides in a typical agricultural watershed of the Mollisols region, Northeast China

Contact Info

Product

Resources

About