Thanks for nice and useful mod.
it will be great if you add lime.
<filltypename_in1>manure</filltypename_in1>
<percentage_in1>50</percentage_in1>
<filltypename_in2>liquidmanure digestate</filltypename_in2>
<percentage_in2>30</percentage_in2>
<filltypename_in3>lime</filltypename_in3>
<percentage_in3>20</percentage_in3>
<filltypename_out>fertilizer</filltypename_out>

Sweet. Thank you very much