Mineral Fertilizer is a special resource used to upgrade your Fields in Westland Survival.
Once you build a Field, you can grow crops and collect harvests. However, to improve your Field and unlock higher levels, you will need Mineral Fertilizer.
What is Mineral Fertilizer used for?
Mineral Fertilizer is required to upgrade your Field to Level 2 and higher.
Upgrading your Field allows you to improve crop production and get better results from farming.
Where to get Mineral Fertilizer?
You can obtain Mineral Fertilizer as a reward from the Emergency Stop event.