The assessment of dust drift from pneumatic drills using static tests and in-field validation

Biocca, Marcello; Fanigliulo, Roberto; Gallo, Pietro; Pulcini, Patrizio; Pochi, Daniele

doi:10.1016/j.cropro.2015.02.006

Cited by 12 publications

(8 citation statements)

References 5 publications

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“…Also, based on the estimated air velocities in the glass cylinder at the prescribed air flow rate (±0.04 m s −1 ], it seems unrealistic to optimise the protocol with the current design of the Heubach dust meter. This air speed in the glass cylinder is much lower than the air speeds measured around stationary operated machines and in semi‐field and field conditions . In view of the above, it seems more convenient and appropriate to use one of the proposed alternative set‐ups to estimate the total dust load abraded during the drilling process and its driftable fraction.…”

Section: Discussionmentioning

confidence: 94%

“…This air speed in the glass cylinder is much lower than the air speeds measured around stationary operated machines 1,16 -18,37,50,51 and in semi-field and field conditions. 16,20,40,50,52,53 In view of the above, it seems more convenient and appropriate to use one of the proposed alternative set-ups to estimate the total dust load abraded during the drilling process and its driftable fraction.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Comparing different techniques to assess the risk of dust drift from pesticide‐coated seeds

Foqué¹,

Beck²,

Devarrewaere

et al. 2017

Pest Management Science

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It looks as if the Heubach dust meter underestimates the risk of dust drift. Using one of the alternative methods might be a more appropriate way to assess the abrasion potential of seeds. Given the low investment cost required, mechanical sieving seems to be a good approach for non-specialised labs. The individual sowing element set-up is the most realistic simulation of in-field dust drift generation but requires a higher initial investment. Therefore, this set-up is most suitable for specialised labs and is recommended for further research in this area. © 2017 Society of Chemical Industry.

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Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Comparing different techniques to assess the risk of dust drift from pesticide‐coated seeds

Foqué¹,

Beck²,

Devarrewaere

et al. 2017

Pest Management Science

View full text Add to dashboard Cite

show abstract

“…Risks to honeybees from exposures to CTD via deposition of dusts from treated seeds There were six studies on deposition of CTD from dust during sowing of seeds treated with CTD and these included 19 responses (see SI). These studies (Bayer CropScience AG 2005d, 2008c, 2008dBiocca et al 2015) (Figure 3) showed that the rates of deposition were smaller than the NOAER for adverse effects at the level of the colony.…”

Section: Risks Resulting From Exposures To Honeybees From Uptake and mentioning

confidence: 99%

Quantitative weight of evidence assessment of higher tier studies on the toxicity and risks of neonicotinoids in honeybees. 3. Clothianidin

Solomon

Stephenson²

2017

Journal of Toxicology and Environmental Health, Part B

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A quantitative weight of evidence (QWoE) methodology was used to assess higher tier studies on the effects of clothianidin (CTD) on honeybees. Assessment endpoints were population size and viability of commercially managed bees and quantity of hive products. A colony-level no-observed-adverse effect concentration (NOAEC) of 25 µg CTD/kg syrup, equivalent to an oral no-observed-adverse effect-dose (NOAED) of 7.3 ng/bee/d for all responses measured. Based on a NOAEC of 19.7 µg/kg pollen, the NOAED for honeybee larvae was 2.4 ng/bee larva/d. For exposures via dust, a no-observed-adverse effect rate of 4 g CTD/ha was used to assess relevance of exposures via deposition of dust. The overall weight of evidence suggested that there is minimal risk to honeybees from exposure to CTD from its use as a seed treatment. For exposures via dust, dust/seed and dust/foliar applications, there were no exposures greater than the NOAED for CTD in nectar and pollen, indicating a de minimis risk to honeybees when the route of exposure was via uptake in plants. Analysis of effect studies in the field indicated a consistent lack of relevant effects, regardless of the way CTD was applied. For exposures via dust, there were no adverse effects because of these applications and there were no exposures greater than the NOAED for CTD in nectar and pollen. The overall weight of evidence based on many studies indicated no adverse effects on colony viability or survival of the colony. Thus, the overall conclusion is that clothianidin, as currently used in good agricultural practices, does not present a significant risk to honeybees at the level of the colony.

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“…Risks to honeybees resulting from exposure to dusts containing TMX There were 12 studies on deposition of TMX from dust during seeding of seeds treated with TMX, and these included 33 responses (see SI). These studies (Biocca et al 2015;Syngenta 2007e, 2008bSyngenta 2007e, , 2008aSyngenta 2007e, , 2010g, 2010f, 2010e, 2010i, 2011cSyngenta 2007e, , 2011aSyngenta 2007e, , 2012c showed that the rates of deposition were smaller than the NOAER for adverse effects at the level of the colony (Figure 3).…”

Section: Risks From Exposures Via Surface Watersmentioning

confidence: 97%

Quantitative weight of evidence assessment of higher tier studies on the toxicity and risks of neonicotinoids in honeybees. 4. Thiamethoxam

Stephenson¹,

Solomon

2017

Journal of Toxicology and Environmental Health, Part B

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A quantitative weight of evidence (QWoE) methodology was used to assess several higher-tier studies on the effects of thiamethoxam (TMX) on honeybees. Assessment endpoints were population size and viability of commercially managed honeybee colonies and quantity of hive products. A higher-tier field toxicology study indicated a no-observed-adverse effect concentration (NOAEC) of 29.5 µg TMX/kg syrup, equivalent to an oral no-observed-adverse-effect-dose (NOAED) of 8.6 ng/bee/day for all responses measured. For exposures via deposition of dust, a conservative no-observed-adverse-effect-rate at the level of the colony was 0.1 g TMX/ha. There was minimal risk to honeybees from exposure to TMX via nectar and pollen from its use as a seed-treatment. For exposures via dust and dust/seed applications, there were no concentrations above the risk values for TMX in nectar and pollen. Although some risks were identified for potential exposures via guttation fluid, this route of exposure is incomplete; no apparent adverse effects were observed in field studies. For exposures via dust/seed and dust/foliar applications, few adverse effects were observed. Considering all lines of evidence, the quality of the studies included in this analysis was variable. However, the results of the studies were consistent and point to the same conclusion. The overall weight of evidence based on many studies indicates that TMX has no adverse effects on viability or survival of the colony. Thus, the overall conclusion is that the treatment of seeds with thiamethoxam, as currently used in good agricultural practices, does not present a significant risk to honeybees at the level of the colony.

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The assessment of dust drift from pneumatic drills using static tests and in-field validation

Cited by 12 publications

References 5 publications

Comparing different techniques to assess the risk of dust drift from pesticide‐coated seeds

Comparing different techniques to assess the risk of dust drift from pesticide‐coated seeds

Quantitative weight of evidence assessment of higher tier studies on the toxicity and risks of neonicotinoids in honeybees. 3. Clothianidin

Quantitative weight of evidence assessment of higher tier studies on the toxicity and risks of neonicotinoids in honeybees. 4. Thiamethoxam

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