Anhydrous ammonia is applied at the rate of sixty pounds per ton. A roll of 40' x 100' plastic will cover 38 bales. If the bales are 1500 pound bales, the stack will contain 28 tons of forage. Plastic meeting these size and weight specifications is available through many farm supply outlets but may be a special order item. While ammonia treatment of forage has been used very successfully, there are some possible problems.
Ammonia toxicity can occur.
The symptoms include extreme excitability, circling, running, convulsions and death. For these reasons it is recommended to only treat low quality forages. If toxicity should occur, avoid working the livestock and remove the ammoniated forage for several days. Special care should be taken when handling small square bales. See MU publications G1920, MX0385, MX0386.