By Catie Green
CSU Extension 

Extension Column

Hay fire prevention


September 28, 2023

Something to keep in mind as we go into another hay storage season is keeping an eye on the temperature of your hay stack. With a particularly wet 2023 hay season it is possible that hay didn’t get baled at optimal moisture to prevent microbial activity and respiration leading to the warming of bales and potentially a hay fire.

Hay that is baled above 20 percent moisture without using a preservative is generally at greater risk for fire and the critical moisture content for large bales is even lower. As hay is cut, dried, and baled it continues to respire — meaning the forage is stil...

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