Actually:
This isn't a fertilizer sprayer, nor are all the other ones in the game. It's a crop insecticide sprayer for killing bugs. This one is for fruit trees, like apple and pear. The boomed ones are for grains and wheats.
But the game sees them as fertilizer sprayers. It's been that way sinds LS08....

Is it a kind of fertilizer or manure spreader? What is the working width? What filltype and how much?
Thx for your answer.