R.E. Wolf's scientific contributions

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Publications (1)

Assessing the Ability of Dropletscan™ to Analyze Spray Droplets from a Ground Operated Sprayer
  • Article

September 2003

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498 Reads

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36 Citations

Applied Engineering in Agriculture

R.E. Wolf

DropletScan™ software and a flatbed scanner were used to analyze spray droplets collected on water-sensitive paper. Collections on water-sensitive papers were made from a ground sprayer during in-field herbicide efficacy trials. In a separate procedure, water-sensitive papers were used to collect downwind spray droplet deposits. The purpose of each procedure was to assess the ability of DropletScan™ to measure the differences in spray droplet characteristics on water-sensitive paper. DropletScan™ generates several droplet statistics including DV0.1, DV0.5, DV0.9, number of droplets under 200 microns per unit area, deposition/GPA, and percent area coverage. In each evaluation procedure an extended range flat-fan nozzle was compared to an air-induction flat-fan nozzle at different application volumes and pressures. Based on the procedures used in this assessment, DropletScan™ effectively measured differences in spray droplet characteristics for both in-field and downwind collections of spray droplets.

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Citations (1)

... Under experimental conditions, water-sensitive spray cards provide highly accurate predictions of volumetric flow rate and mass of water applied during spray applications [25][26][27]. Furthermore, several studies describe methods based on image analysis of data from water-sensitive spray cards to quantify spray coverages [4,[28][29][30][31][32][33][34][35][36]. Water-sensitive spray cards have been used to obtain quantitative data on spray coverage/deposition in field crop studies of pesticide applications with manned airplanes [22,[37][38][39], unmanned drones [2,40], and tractor-mounted ground rigs [37,39,40]. ...

Reference:

Phone App to Perform Quality Control of Pesticide Spray Applications in Field Crops
Assessing the Ability of Dropletscan™ to Analyze Spray Droplets from a Ground Operated Sprayer
  • Citing Article

  • September 2003

Applied Engineering in Agriculture

R.E. Wolf