Hay tarps can be a good alternative to barns or commodity sheds when storing hay, says Karla Hernandez, forages field specialist with South Dakota State University.
Solid structures protect hay from water and allow for acceptable moisture loss if stored well and ventilated. But they can be expensive to build and maintain.
Plastic hay tarps are cheap and keep water off bales. They also offer maximum flexibility. “The advantage of plastic traps is they allow more protection while minimizing field transportation,” she says. “It allows hay to be stored in the field or in the bale yard until is ready to use or to be sold.”
But there can be downsides to plastic tarps, including issues with trapped moisture as bales dry out. Also, exposure to ultra-violet light can significantly reduce tarp service life.