Rain during harvest and filling can be exasperating, especially after you’ve probably spent time carefully determining your forage’s moisture content.
If significant rainfall occurs during harvesting, the best option is to roll well the forage that is already in the bunker and quickly sheet it loosely. It should be weighed down just enough to make sure the cover doesn’t blow off or get damaged. The bunker should then be filled as quickly as possible after the rain has stopped, assuming that the forage is not too wet to ensile. If the forage is very wet, then it should be spread wide and allowed to re-wilt. The best is to ensile rained-on forage separately from forages without rain damage.
Adding a challenge-specific inoculant, can help inhibit undesirable microbes during feedout and maintain proper silage quality, retaining important DM and nutrients.