Preparation of maize plants for EMS treatment. The field should be isolated and have warning signs. One to three EMS tubes are transported to the field every day during the treatment. Tubes are covered with a zipped polyethylene bag containing a piece of paper towel soaked with sodium thiosulfate solution. The covered tubes are stood upright in a Styrofoam box and the box is sealed with sticky tape.
Wind direction is determined before mixing.
A pole with long tape is helpful. Smoke will also work. Once the wind direction is determined, all the materials necessary for the treatment are placed up wind from the EMS field. EMS is observed at the bottom of the tube as a translucent droplet. The tube is shaken five to ten times vigorously and placed in the shade.