Improving the Effectiveness of Aerial Pesticide Sprays / DB. Smith, IW. Kirk, JB. Ross
- Conference Author:
- Pesticide Formulations and Delivery Systems: The Continued Evolution of Agrochemicals, 24th Volume (24th : 2003 : Tampa, Florida)
- Physical Description:
- 1 online resource (15 pages) : illustrations, figures, tables
- Additional Creators:
- Smith, DB., Kirk, IW., Ross, JB., American Society for Testing and Materials, and ASTM International
- Restrictions on Access:
- Subscription required for access to full text. and License restrictions may limit access.
- Thirty-eight aircraft setups were submitted in order to have droplet size and drift analyses performed. Four of the eleven insecticides predicted Dv0.5s were in the 351¿̐ư400 ?m range. Seven of the herbicide setups had predicted Dv0.5s in the 205¿̐ư250 ?m range, while ten Dv0.5s were > 351 ?m. Five of the ten predicted Dv0.5s were between 386 and 413 ?m. Twelve different herbicides were reported as having been applied with aircraft setups that had predicted Dv0.5s between 386 and 413 ?m. A summary of the prior swath deposit data indicated that the percent recovery generally increased as the Dv0.5 increased. The magnitudes of the deposits on inert targets and cotton leaves appeared to be about equal for a given Dv0.5. The correlation coefficient between the ¿̐ưpercent of the spray volume in droplets <= 100 ?m and <= 200 ?m in diameter¿̐ư was 0.983. This result is consistent with prior results and indicates that either 100 or 200 ?m can be effectively used as the upper limit when studying the ¿̐ưsmall droplet¿̐ư component in sprays. We found several similarities or differences in the ¿̐ưsmall droplet¿̐ư components based on data from different atomization tests. According to one set of atomization models, agricultural aircraft will be limited to about 225 km/h (i.e., 140 mph) in order to produce a 400 ?m Dv0.5 spray when using currently available nozzles and water plus one or more pesticides. The extremes of the predicted drift deposits for 38 agricultural aircraft setups were over 30-fold apart.
- Dates of Publication and/or Sequential Designation:
- Volume 2005, Issue 1460 (January 2005)
- 9780803155046 (e-ISBN), 9780803134850, and 0803134851
- Digital File Characteristics:
- text file PDF
- Bibliography Note:
- Includes bibliographical references 35.
- Other Forms:
- Also available online via the World Wide Web. Tables of contents and abstracts freely available; full-text articles available by subscription., Full text article also available for purchase., and Also available in PDF edition.
- Reproduction Note:
- Electronic reproduction. W. Conshohocken, Pa. : ASTM International, 2005. Mode of access: World Wide Web. System requirements: Web browser. Access may be restricted to users at subscribing institutions.
- Technical Details:
- Mode of access: World Wide Web.
- Source of Acquisition:
- ASTM International PDF Purchase price USD25.
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