Agricultural Use Cases of SAR

I am searching for applications of SAR in agriculture. I went through the posts in the forum and could find only crop classification and someone trying to get the yield prediction. Can anyone exhaustively list the use cases, not previously talked of in the forum .
Also, are there any cookbooks for realizing these ? I understand it requires time to understand the problems and innovate ourselves with the basic techniques, but any already done experimentation shall help me realizing a more advanced application.
Thanks for the help in advance.

My second study about DEM generation. So I must create DEM’s for my study. so I will not use topo phase remowal for comparison and for other works I will use.