My Suggestion for this would be to work on the Farmer's Favorite (80)- Help
Please provide some information as to why you are downvoting, this is a glitched achievement and isn't my fault you can't unlock it.
Edit: As of July 2020 the Farmer's Favorite achievement is still glitched and may not unlock at all.
Working on this achievement will net you the following achievements by the time you're done.
Help a Fella Out (20)- Help one farmer
Bumper Harvest (80)- Harvest 10 Hectares
Make 'em Grow (40)- Fertilize 10 Hectares
You may also get
Into the Soil (40)- Sow 10 Hectares
In for the Long Haul (80)- Play for 10 hours on one game save.
Preparation is Key (40)- Cultivate 10 Hectares
Depending on how "skilled" you are, you may get this done before the 10 hour achievement. But it'll be quite close.
Depending on the missions you're given, Into the Soil and Preparation is Key may be incomplete when you're done, which is why I didn't put this guide up for those achievements.