Quality Control Verification and Mapping for Chemical Application

Quality Control Verification and Mapping for Chemical Application The quality of an agrochemical application is a combination of the efficacy of deposit, productivity of the operation, and avoidance of off-site movement. A GPS- and sensor-based system was developed to document the quality of spray applications from a self-propelled sprayer. Confirmation of the spray deposition was accomplished with spray sampling surfaces (water sensitive paper) located at surveyed sampling points in the test fields. An image analysis technique was developed to estimate quantitative and qualitative data, such as relative droplet size spectra, and spray coverage from the cards. Relative performance of two flow control techniques, namely conventional pressure-based control and blended-pulse flow control were documented. Blended-pulse control produced a wider dynamic range and superior consistency of deposit when speed varied over a 3:1 range, or a 6:1 variable rate range was desired. Real-time mitigation of spray drift was accomplished through droplet size changes when sensed weather conditions and sprayer location suggested a potential hazard. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Precision Agriculture Springer Journals

Quality Control Verification and Mapping for Chemical Application

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Publisher
Springer Journals
Copyright
Copyright © 2003 by Kluwer Academic Publishers
Subject
Life Sciences; Agriculture; Soil Science & Conservation; Remote Sensing/Photogrammetry; Statistics for Engineering, Physics, Computer Science, Chemistry and Earth Sciences; Atmospheric Sciences
ISSN
1385-2256
eISSN
1573-1618
D.O.I.
10.1023/A:1021871207195
Publisher site
See Article on Publisher Site

Abstract

The quality of an agrochemical application is a combination of the efficacy of deposit, productivity of the operation, and avoidance of off-site movement. A GPS- and sensor-based system was developed to document the quality of spray applications from a self-propelled sprayer. Confirmation of the spray deposition was accomplished with spray sampling surfaces (water sensitive paper) located at surveyed sampling points in the test fields. An image analysis technique was developed to estimate quantitative and qualitative data, such as relative droplet size spectra, and spray coverage from the cards. Relative performance of two flow control techniques, namely conventional pressure-based control and blended-pulse flow control were documented. Blended-pulse control produced a wider dynamic range and superior consistency of deposit when speed varied over a 3:1 range, or a 6:1 variable rate range was desired. Real-time mitigation of spray drift was accomplished through droplet size changes when sensed weather conditions and sprayer location suggested a potential hazard.

Journal

Precision AgricultureSpringer Journals

Published: Oct 3, 2004

References

  • Buffer zones for reducing pesticide drift to ditches and risks to aquatic organisms
    de Snoo, G. R.; de Wit, P. J.
  • Effect of herbicide drift on adjacent boundary vegetation
    de Snoo, G. R.; van der Poll, R. J.
  • Unsprayed field margins: effects on environment, biodiversity and agricultural practice
    de Snoo, G. R.
  • Modeling spray drift from boom sprayers
    Holterman, H. J.; van de Zande, J. C.; Porskamp, H. A. J.; Huijsmans, J. F. M.

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