Factorio Forums

I've got two farms, one for yumako and another for jellynut. The jellynut is working just fine, but it seems like the recipe for yumako seeds gives me substantially less seeds than necessary to keep up the farm.

To experiment, I just cut down 13 trees in the map, and got 4 seeds from it. Am I missing something? Or is this a bug. I'm on version 2.0.16

I experimented also with adding production modules and using the biochamber, but still did not get even as much seeds as necessary to plant back the tree that gave 50 fruits.

Could be just bad luck.
And you can see the expected (average) ratios, productivity taken into account, on the biochamber tooltip on the right.

Probably just bad luck.

Each fully-grown plant gives you 50 fruit, and each fruit has a (base) 2% chance to produce a seed. On average, each fruit gives exactly one seed. From a fully-grown plant, you have: roughly a 1/3 chance of getting 0 seeds, roughly 1/3 chance of getting 1 seed, and roughly 1/3 chance of getting 2 or more seeds.

If you don't put productivity modules in your assembly machines, or use the biochamber which has a 50% bonus productivity, then the number of seeds you have will fluctuate but will eventually reach 0 and you will run out of seeds.

The best way to reliably maintain a seedstock is to put productivity modules in your assembly machines (don't bother using biochambers for recipes you don't have to) and have a steel chest that collects spare seeds. Only start discarding (incinerating) seeds once that chest is full.

myridium wrote: Sun Nov 10, 2024 5:38 am don't bother using biochambers for recipes you don't have to

Bad advice. You need biochambers anyway to further proceed mash/jelly, so there is no reason to loose speed and productivity by using assemblers. Assembler should be used only for igniter(produce few nutrients from spoilage to kickstart factory).

As fruits can spoil, it is absolutely necessary to use productivity to reduce the chance to run your seed bank dry. Else the trees only sustain themselves statistically without any spoilage.

Thanks for the replies, I've now got a working setup using bio chambers.