There all sorts of things that affect coverage. These things are done by booms with nozzles at all sorts of different points, and there's variables like pressur

There all sorts of things that affect coverage. These things are done by booms with nozzles at all sorts of different points, and there's variables like pressure variance at different points in the pipes, spray radius per nozzle type, turning radius / position of the tractor, relative height of the boom to the crop / ground at different points, etc. And it's not just fertilizer, but other sprays, too. Here, this looks thoroughly boring, but this guy is going over configuring one of our systems for fertilizer application... You can get an idea of some of the variables involved, if you can make it through :-) https://www.youtube.com/watch?v=2rQJI7zz1q4 https://www.youtube.com/watch?v=2rQJI7zz1q4