LOW VOLUME FUNGICIDE APPLICATIONS TO CORN
Scott Bretthauer, R Wolf
Contact: Scott Bretthauer
Department of Agricultural and Biological Engineering
University of Illinois
1304 W. Pennsylvania Ave.
Urbana, IL 61801
Summary: This study examined low volume fungicide applications to corn. The treatments included various spray application rates, two nozzle types, and spray solution with and without crop oil concentrate. Spray coverage and droplet size was measured using Kromekote cards and Vision Pink dye, with the analysis performed with DropletScan. Spray deposition was measured using mylar plates and Caracid Brilliant Flavine fluorescent dye applied at a rate of 10 g/acre regardless of spray application rate. The study was conducted over two years, with 3 fields evaluated for spray coverage and deposition each year. Within each field, two plots were taken per treatment, with ten corn plants sampled per plot. On each corn plant, Kromekote cards were placed on leaves one foot out from the stalk in the top, middle, and lower part of the canopy. In addition, a plate was attached to the stalk at ear height. This plate held the mylar sampler and an additional Kromekote card. Differences in deposition, coverage, and droplet size among the treatments will be discussed.
A copy of this paper is not available at this time; please contact the author for more information.