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Research · Economy

Crop Rotation

Fallow fields turned to yield — raises production further.

Entity ID
crop_rotation
Branch
Economy
Stat buffed
production_rate — Production rate
Bonus per level
+1.2%
Maximum level
15
Bonus at maximum level
+18%
Power per level
58
Power at maximum level
870
Base study time
30 seconds
Study time at maximum level
1h 15m
Prerequisites
Irrigation at level 5

Cost, time and bonus at every level

Crop Rotation runs to level 15, adding +1.2% to production_rate and 58 power each time. Studying it out costs the four soft resources — the same amount of each — and takes 1h 15m for the final level alone. Gems are only ever the optional instant finish; the study itself is bought with what your fields already make.

Crop Rotation: what each level costs and what it grants.
LevelTotal production ratePowerStudy timeEach resourceGems to finish instantly
1+1.2%581m 55s12,0002
2+2.4%1162m 30s15,6003
3+3.6%1743m 14s20,2804
4+4.8%2324m 13s26,3645
5+6%2905m 28s34,2736
10+12%58020m 20s127,25421
15+18%8701h 15m472,48576

Taken from nothing to level 15 that is 5h 20m of raw study and 2,007,435 of each of food, wood, stone and iron — 8,029,740 resources in total. Levels above 10 additionally consume an advanced forging material, one more unit per level past the threshold, so the last 5 levels also need the forge working.

Where it sits in the tree

Crop Rotation belongs to the Economy branch — the production, construction and gathering line — everything that fills the stores. It stays locked until Irrigation reaches level 5. Nothing further in the tree depends on it, so it is a leaf: worth taking for its own bonus, never as a stepping stone.

The road here: Agriculture to level 8 → Irrigation to level 5 → Crop Rotation. That is 2 studies standing between a fresh Academy and this one.

What Crop Rotation costs before its own first level: the prerequisite chain, at the levels it demands.
PrerequisiteLevel requiredEach resourceStudy time
Agriculture8286,2923h 2m
Irrigation5108,51714m 27s
Total before you may begin—394,8093h 17m

Guide: Research & the Academy · Research Priorities. Studied at the Maester's Academy. Index: all 81 studies · the whole database.

Rest of the Economy branch: Agriculture · Logistics · Irrigation · Granaries · Millwork · Quarrying · Smelting · Deep Mining · Woodcraft · Animal Husbandry · Wainwrights · Foraging Craft · Masonry · Carpentry · Stonecutting · Trade Roads · Marketry · Granary Networks · Harbour Works · Great Works

Every figure above is generated from the shipped game code — the same constants and formulas the running game uses — and regenerated whenever the balance changes. Nothing on this page is hand-typed.

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