Emulsifiable concentrates, wettable powders, dry flowables, and granular herbicides can be packaged with no leakage problems. Bags are inexpensive, costing about a nickel each, and can be labeled with mailing labels listing types of herbicide, rates, and plot numbers to be sprayed. A pair of scissors works nicely to open the bags at the study area. After the herbicides are mixed with water, the empty bags can be carried to plots to be sprayed. This prevents copying plot numbers under conditions that increase the likelihood of a mistake.
Bags are triple rinsed and easily disposed of by burning after the demonstration.
Demonstrations are planned to allow time for prepackaging. In most demonstrations, both the high and low labeled rates of all recommended herbicides for a crop are applied for comparisons. Some county agents are planning to identify each herbicide-treated area and show the cost per acre of each treatment. The type of demonstration, county name, and cooperator names are hand-lettered with plastic vinyl letters. The signs make the public aware of county agent field demonstrations being conducted, and serve as reminders to tractor operators to avoid the area.