I don't know what the stability is like. Among other things it's for treatment of seeds and soil against various diseases of crops.
Some literature specifically mentions barley, cotton, corn, oats, rice, and wheat.
Also used as a fungicide for paint, and a wood preservative against rot, termites, mildew and decay. Canada Department of Agriculture, Production and Marketing Branch, Plant Products Division. Ottawa, Ontario, Canada. Harding, W. C. 1979-80. Farm Chemical Handbook, 70th ed. 1984.