Date:         Sat, 11 Mar 2000 14:16:06 +0100
Subject:      utilisation of of biogas slurry and dregs
From: cosmos@public1.wx.js.cn

John Harris [jfhdally@agn.net.au] asked
> Q1: You speak about mushroom culture on Dregs from digester. Would this be
> mixed with straw or something else for the substrate or used as it comes
> out?. How are the dregs inoculated with spore? For mushroom compost in
> Australia the idea of an anaerobic compost for substrate would be unheard of I think.

Mushroom compost ratio could be straw and stalks : biogas dregs = 1:10.
Small amounts of calcium superphosphrate about 25 kg and gypsum 50 kg into
111.1 square meters compost. The crucial point is how to make compost by turning it four times.

> Q2: When using the substrate to feed fish you say "The FCR was 0.1 lower
> than the other one" can you explain this abbreviation.

FCR is the food conversion rate.

> Q3: Could you supply some references for the work on mixing slurry with
> agricultural chemicals,  especially any work done with fungicides or
> treatment of other plant diseases

Ref. to Chinese Biogas 1987.5 (3); Chinese Biogas 1993,11 (1) and Rural
Ecological Environment 1989 (1).