Fertilizers Skill Book
Notes
The Fertilizers Skill Book is a hidden research item that unlocks the Fertilizers specialty, allowing a player to produce advanced soil additives, nutrient mixes, and compost treatments to improve crop yields or remediate polluted ground. This skill sits in the tail-end of the Farming/Agricultural research tree and becomes valuable once a settlement begins serious row-crop farming or faces ground pollution that is reducing soil fertility. A practical tip: because producing fertilizers usually requires a chemistry bench or similar intermediate station, coordinate with a researcher or chemist to craft the skill book early so your farmers can start boosting food output before mid-game population growth strains the food supply.
Notes are AI-generated and may be imprecise.
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Ingredients
| Ingredient | Qty | Type |
|---|---|---|
| 5 | item | |
| 5 | item | |
| 15 | category |
Byproducts (garbage)
| Material | Qty / craft |
|---|---|
| ≈ 0.4 | |
| ≈ 0.2 |
Approximate โ a category ingredient's salvage value depends on the item actually used.
Crafting waste collects in the station's garbage output and must be hauled away or recycled โ see the Garbage & Recycling guide.
Crafting
| Labor | 2400 calories |
|---|---|
| Craft time | 15 min |
| Throughput | ≈ 4 Fertilizers Skill Book / hour (base) |
Total raw to craft this
200× Electronic Scrap
150× Limestone
150× Rock (any)
58.75× Crushed Limestone
50× Crop Seed (any)
50× Raw Food (any)
22.58× Clay
17.5× Wood (any)
15× Basic Research (any)
9.38× Iron Ore
0.23× Silica (any)
Approximate โ category ingredients and any production cycles are counted as raw.