Thanks for this very instructive blog. I have a question with the following:

In this sense, some researchers, such as Esperance (2005), point out that fresh pastures contain a percentage of moisture that varies between 70 and 80% and when moisture is reduced to values between 15 and 25% through the drying process, it can be easily preserved without deterioration as long as it is protected from precipitation or any humidity factor.

So, haystacks seem to carry a pretty decent amount of humidity (15%-25% from what you wrote). How come this does not deteriorate them with time? Thanks in advance for your answer.

Cheers, and have a nice week-end!