Koji Iwase [keec-bei@mbox.kyoto-inet.or.jp] wrote:
> I don't know the case of mushroom cultivation with sludge in direct use.
> But, Li commented that the ratio between Straw and stalks:dregs = 1:10.
> I suppose that the sludge contains very little carbon source and could
> be a source of microorganisms for fermentation or composting.
> Therefore, the ratio between straw and dregs is quite strange.
> That must be 10:1 or at least larger in straw and stalks than dregs.
>
> The available information on mushroom cultivation is very little.
> I would like to know the following information.
> (a) What kind of compounds are included in dregs?
> (b) What kind of microorganisms are working in composting process?
> (c) What kind of chemical components are produced by composting?
> (d) What kind of mushroom species are produced?
> (e) How is the productivity of mushrooms?

Dear Friends:

The ratio between straw and stalks : biogas dregs = 1 : 10. It is correct.

The carbon in dregs was measured in Nanhui and Jiading Counties of Shanghai.
The carbon contents compared between dregs and compost is as follows:

In Nanhui, dregs, humic acid 28.49, hemi cellulose 30.55, cellulose 15.73 and lignin 13.1 while compost, 14.46, 19.82, 8.03, and 10.45.

In Jiading, dregs, hemi cellulose, cellulose and lignin are 32.84, 22.99, and 21.21 respectively while composting, 26.01, 21.52, and 16.97.

I do not have the data about the microorganisms, chemical components in composting process. That could be a small research project to monitor these data.

Mushroom species are as usual such as Pleurotus ostreatus, F. velutipes, even shiitake. The yield of mushroom depends.

Best regards
Li Kangmin