Fertilization is a technology in Age of Empires IV that can be researched at any dedicated food drop-off building or various landmarks starting in the Castle Age. Once researched, it increases Villagers' gathering rate for Food by +10%. It does not affect food gathered from hunting or fishing. It is available to all civilizations, except the Japanese.
Civilization bonuses[]
Abbasid Dynasty: Research speeds are +15%/+20% faster while Golden Age tiers 2/3 are active. If Preservation of Knowledge has been researched, this technology costs -20%.- Ayyubids: Research speeds are 25% faster while Golden Age tier 2 is active
- Byzantines: Research speeds are 30% faster per water level at buildings within the influence of a Cistern with the Dialecticus ability active.
- Chinese and Zhu Xi's Legacy: The technology researches 150% faster when the Mill or Granary is supervised by an Imperial Official. For Zhu Xi's Legacy, this can be improved to 300% faster after researching Regional Inspection.
- Delhi Sultanate: The technology is free, but takes 5x as long to research (300 seconds instead of 60 seconds).
- French and Jeanne d'Arc: Economic technologies are 35% cheaper.
- Malians: Technologies take less time to research based on how much gold has been obtained through trade.
- Mongols: Can research the Improved technology for another 350 stone to grant an additional 5% gather rate (+15% total).
Changelog[]
- Originally, the Mongols' Improved Fertilization provided an additional 5% gathering rate (for a total bonus of 20%). With Season Two Update 17718, it provides an additional 7.5% gathering rate (for a total bonus of 22.5%). With update 12.0.1974, it was decreased back to 5% (for a total of +15% after the base bonus reduction).
- Originally, Fertilization cost 150 wood, 350 gold and took 75 seconds to research. With update 24916, it costs 100 wood, 250 gold and takes 60 seconds to research.
- With update 24916, Fertilization is now available in the Granary
- Originally, Fertilization improved gather rate by +15%. With update 12.0.1974, the bonus was decreased to +10%.
- With update 12.0.1974, the icon was changed to its current version. It previously used the same icon as Horticulture.
Campaign version[]
Because the campaigns have not been rebalanced since the release of the game, Fertilization has different stats there:
- It only increases villager food gather rate by +10%
- It costs 400 gold and takes 75 seconds to research
- The Mongol improved version costs +400 stone and increases gather rate by an additional 5% only (for a total of +15%).
