A nation can set a law which gives gold for every crate of goods produced from plantation and sold directly to the port market.
Money comes from the nation's treasury.

Minimum : 1 gc per 100 crate.
Maximum : 100 gc per crate.

I currently haven't seen the full scope of plantation yet, but, I thought this might be a good law.

I like the idea.
I changed the title to Farmer's Grant (it's not a fee).

It cannot be this big.
Nations currently make 1 gc per 100 crates sold. Still, they make this when a crate is sold from the market to the player. So, this should be their maximum pay.

Of course, nations also make gold on acres and permissions now, so theoretically,they can afford to pay more than 1 gc per crate.
Let's keep this open as plantations flourish and revise the numbers later.

Is it alright to have the grant given on a daily based on how much you produced that day? Right after Stipends payout.

Bump

Lots of people store their goods into their warehouses, which is why even tho a lot of production is done, but the market are usually still empty.

This is something that will help make the market have stocks again.