How do you obtain manure in Farming Simulator 20 (Nintendo)?

OK after experimenting a lot here is what I have found:

1. Manure can only be obtained if you have your own cows or horses (which I currently do not). If you have cows or horses, their manure will appear in the respective silage bins at the farm/cow pasture
2. If you don't have animals yet, you can use liquid or solid fertilizer instead
3. For liquid fertilizer, buy a sprayer and hook it up to a tractor. Drag the sprayer over to the liquid fertilizer tank at the farm/cow pasture and it will fill up automatically. Use the symbols on the ground to know which tank hold liquid fertilizer; you can find these symbols in the help docs.
4. For solid fertilizer, buy a fertilizer implement and hook it up to your tractor. Do the same as above but with the solid fertilizer tank.
5. Certain seeders allow you to plant and fertilize at the same time. Read their information in the equipment to know which ones can do this. Totally worth the investment and huge time saver. Fill them up with seed at the seed silo and then fill them up with fertilizer at the desired tank.