You get these naturally while completing this one. It doesn't matter what you do with it for the purposes of this achievement. Once your hopper is full you can either sell the crop somewhere, put it in your storage area, or dump it somewhere.

You can either wait until the harvester is completly full, or drive alongside it very slowly when it gets close to full so it doesn't have to stop. To empty the harvester drive your haul vehicle up to the left hand side of the harvester and when the hopper is in place it will automatically start to fill up. The harvester will start flashing beacons when it gets close to full (80% full I think), and it will stop and wait for you once it reaches 100% full. Hire a worker to run your harvester, while you sit in your haul vehicle. It is faster to rotate through the cultivating, sowing, fertilizing and harvesting on the same field so you are working on the achievements for all 4 instead of doing one group at a time. The bigger the harvester, the faster you can get this done. You will also need a hopper and something to pull it with so you can unload the harvester when it gets full.

Different crops require a different types of harvesters so make sure you have the correct type of harvester for the crop you have before you begin. FS19 mods on PS4 range from vehicles and machinery, to shelving, storage, and trailers which can be used to transport farming equipment and resources around. This achivement chain requires more work than the other 3, because you will have to haul the harvested crop away. Farming Simulator 19 is still going strong years after its release thanks to the support of mods, which allow players on console to customise their experience. However, it must be done on a field you own, hired jobs do not count for this. Note: It doesn't matter if you do it yourself or hire a worker for this to count.

Farming simulator 19 trophy guide