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Details van artikel 3 van 15 gevonden artikelen
| Titel: |
Assessment of off-target movement of orchard pesticides: Capture efficiencies of synthetic and biological biomarkers |
| Auteur: |
Hall, F. R. Cooper, J. Kirchner, L. Downer, R. Thacker, R. |
| Verschenen in: |
Journal of environmental science and health. Part B, Pesticides, food contaminants, and agricultural wastes |
| Paginering: | Jaargang 31 (1996) nr. 4 pagina's 815-830 |
| Jaar: |
1996-07 |
| Inhoud: |
Pesticide drift is a symptom of the inefficiency of the hydraulic atomization process and with orchard crops, represents a highly visible process. Assessment of orchard drift, the components of non-target parameters and capture efficiencies of biological biomarkers, are presented in this brief review. Spray deposits downwind from orchard sprays is a reflection of the atomizing system, orchard geometry, seasonal and meteorological condition, as well as the non-target surface characteristics. Downwind ground and airborne drift is captured differently on strings vs. plastic acetate ground collectors, high air volume samples and natural vegetation. Significant differences in pesticide retention can also occur between apple cultivars, for example, and which may be due, in part, to leaf hair density. A wind tunnel device to measure relative capture efficiencies of passive dosimeters demonstrates the potential for significant differences in droplet capture due to surface morphology. Spray drift passing over bare ground, vs. vegetation, deposits differently and the use of windbreaks and buffer zones to mitigate spray drift is being encouraged by policy makers. Data on potential use of biological lethal distance (LD50) values for non-target organisms lends credence for identifying the magnitudes of real-world risks occurring as off-target movement of orchard pesticides. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 3 van 15 gevonden artikelen
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