Yield from chopping wood ties to Forestry skill.

If you chop, it is your forestry skill.

If it is a worker, it is their forestry skill. Management also factors in.

If you want specific numbers to the 2nd decimal place, we can probably look it up.

Otherwise, "big forestry = more yield."

(You get odds for 1 piece of wood per year of age of tree and 1 "just because". So a 200 year tree can yield 201 pieces of wood. You get seeds for each 100 days of age of the tree -- so 3.65 as many. I say potential, because that assumes 100% ability.

The equation for tree ability = 100 + 10 * (tree level) is 100% chopping (meaning you get 100% result).

So balsam firs are maxed at 110 forestry

ponderosa pines at 120 forestry

level 10 trees 200

level 90 trees 1000 forestry

If you take the "level of forestry needed for 100%" and make that the denominator of the fraction. The numerator is your (or your worker's) forestry.

So if you chop level 20 trees, you need 100 + 200 = 300 forestry to chop them at 100%.

If you have 150 forestry, your odds will be

150

--------

300 = 50%

I believe how it works is that for each possible seed or piece of wood, a random number is generated. And if that number is below the threshold, you get the wood/seed. If it is above, you don't. This yields a different result curve than a straight up "I have 57.34% odds so calculate how many I get."

I did this from memory, but I think all that is correct...

Or was that not your question?

Note 1: I have no idea exactly how much your management increases "a tree's yield." You would have to do some tests.

Note 2: These are TW Classic odds. It strikes me that you may be playing TW2 and the equations may differ.

Oh well, the principle is the same.