Japanese boxwood is drying

[Prerna20]

We have a bunch of Japanese boxwood as a hedge but some of them keep drying. We've replaced them multiple times but we notice that they start drying after sometime. Others stay fine and survive.

Any recommendations on why this might be happening? I'm attaching two pictures of the ones that is drying.

Thank you

 

[Chuck]

I don't know if it is picture quality or what but the boxwoods seem awfully yellow which is a sign of nitrogen deficiency