Pesticide Spray Reduction from Using a Sensor-actuated Spray System in Indian River Grapefruit

Electrostatic charging of trigger actuated spray devices

Electrostatic charging has long been used to improve the efficiency of a range of sprayed liquids. However, the benefits have not until recently been available for exploitation by domestic sprays due to the need for a high voltage power supply. A minimum charge-to-mass ratio (q/m) of 1 × 10 C/kg is generally considered necessary to elicit electrostatic benefits. This level of charge can now be ...

Eye-Safe Lidar System for Pesticide Spray Drift Measurement

Spray drift is one of the main sources of pesticide contamination. For this reason, an accurate understanding of this phenomenon is necessary in order to limit its effects. Nowadays, spray drift is usually studied by using in situ collectors which only allow time-integrated sampling of specific points of the pesticide clouds. Previous research has demonstrated that the light detection and rangi...

SPRAY special: SPRAY

Development and Preliminary Evaluation of a Spray Deposition Sensing System for Improving Pesticide Application

An electronic, resistance-based sensor array and data acquisition system was developed to measure spray deposition from hydraulic nozzles. The sensor surface consisted of several parallel tin plated copper traces of varying widths with varying gap widths. The system contained an embedded microprocessor to monitor output voltage corresponding to spray deposition every second. In addition, a wire...

Sensor-Controlled Spray Systems for Florida Citrus1

1. This document is HS-872, one of a series of the Horticultural Sciences Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication Date: April 2002. Please visit the EDIS Web site at http://edis.ifas.ufl.edu. 2. Ed Stover, assistant professor, Horticultural Sciences Department, Indian River Research and Education Center, ...