Spent mushroom compost

Leaf mold—decomposed fallen leaves 2. Spent mushroom compost 3. Garden compost 4. Manure and other waste from a chicken run ... 

Spent mushroom compost Medium fertility. Tends to be alkaline, so not suitable for acid-loving plants. Source from organic mushroom-growers. 

The effect of amending soil with other types of organic-rich material has also been investigated by sequential extraction. These materials include chicken manure and cowpea leaves (Li et al, 1997) spent mushroom compost, commercial humic acid and poultry litter (Shuman, 1998) and cow manure, pig manure and peat soil (Narwal and Singh, 1998). The mechanisms by which inorganic additives (zeolite, apatite and iron oxide) reduce uptake of Cd and Pb by crops have also been studied (Chlopecka and Adriano, 1997). 

Choi H, Chung I, Sin MH, Kim YS, Sim J, Kim J, Kim KD, Chun S (2007) The effect of spent mushroom sawdust compost mixes, calcium cyanamide and solarization on basal stem rot of the cactus Hylocereus trigonus caused by Fusarium oxysporum. Crop Prot 26 162-168. doi 10.1016/j.cropro.2006.04.017... 

Garcia-Gomez, A. Szmidt, R.A.K. and Roig, A. 2002. Enhancing of the composting rate of spent mushroom substrate by rock dust. Compost Science and Utilization 10 99-104. 

The second site of contamination is horse manure/straw compost where it most frequently appears during spawn run. Oniy detrimentai when iarge outbreaks occur, Sepedonium spresence on compost can be traced to insufficient pasteurization or spent compost residues in the trays or sheives. Aithough not regarded as a serious competitor on mushroom compost, Sepedonium is another fungus beiieved to be a food source for mites (Kneebone, 1961). 

---