On Fertilisers, isn't it just a food bonus for cities with ill health. You have +2
and are using up +2 food to combat this ill.
By building a fertiliser plant, you gain +3
and gain +2 food.
If your city is +5
, and you build fertiliser plant, you gain no extra food, but +3
headway.
Personally, I feel that that's a better result. Too much food bonuses, without the corresponding health bonus, doesn't seem right.
I'm currently up to the Fertiliser plant in my current game. Some of my TOP cities are reaching the health cap, or exceeding it. So a +3
would be most welcome.
A food bonus, would only aid those lessor cities with lots of ice and tundra, who shouldn't be allowed to grow unrestrained, but the ones with verdant fertile lands, should be allowed to boost its health and corresponding food production.
Then again, I very much enjoyed the food wastage mechanism when is was employed, very real world. but its a game and game balance.
Farm scraper, one building with a production bonus with access to Fertiliser, yes.
Grains silo bonus NO.