I'm not sure your article is relevant to this discussion. No one here is talking about spring applications. We're all talking about fall applications. You said in your first post that fall applications should be timed such the N is used and depleted before winter. The article you linked suggests that fall applications should be made late enough that the N is NOT depleted before winter and carries over until spring, so that the nutrients are present without needing a spring application. You just linked to an article that said what I already said and what most of the posters here are already doing.