Ways to prepare or treat against root rot in cedars

I'm planting loads of trees. Parts of the land is well drained but others have stagnant water, which can causes root rot in red cedars.

I see that willows do well with no water movement so they have something which cedars do not.

I was wondering if research has been done in that area and inoculant exist to make cedar root resistant to rot.

I have a pretty detailed Forestry Plan for the forest sections of my farm, and one thing the plan contains is detailed information on what trees should be planted/encouraged to grow based on the soil types in various locations.  Over the years we have planted a lot of trees and the one thing we try NOT to do is plant only one species, in fact we plant only what does well on the soil that we have. Often times a species of trees might even require different breeds of the same species, again all because the soil structure changed. Myself I think it is foolhardy to try and plant a species of trees that it is not adapted for a given soil.

It is always a trade off. For instance Black Spruce grow incredibly slow, and the trees we planted 20 years ago will not be harvestable in my lifetime, HOWEVER, they like really wet feet and was about the only thing that would grow in that nasty black water, so we planted it. In other places we have planted hackmatack, white pine, oak, and hemlock; all suited well for where we planted them.

Do you plan only to grow cedar? You could get your regional forester to help you decide what areas should best be planted in what based on soil type. In Maine, or State Foresters are really good at that sort of thing.