US EPA

1562597 

Journal Article 

Spent Mushroom Substrates Influence Soil Quality and Nitrogen Availability in a Semiarid Vineyard Soil 

Peregrina, F; Larrieta, C; Colina, M; Mariscal-Sancho, I; Martin, I; Martinez-Vidaurre, JM; Garcia-Escudero, E 

2012 

1 

Soil Science Society of America Journal
ISSN: 0361-5995
EISSN: 1435-0661 

76 

5 

1655-1666 

10.2136/sssaj2012.0018 

WOS:000308806300014 

Two spent mushroom substrates (fresh, F-SMS, and composted
in aerobic conditions, C-SMS) were annually applied for 4 yr at two different rates (8 and 25 Mg
ha(-1) as dry matter) to a vineyard soil (Typic Haploxerept) located near Logrono (Ebro Valley,
La Rioja, Spain). Soil samples were collected at three depths (0-5, 5-15 and 15-25 cm), and
analyzed for soil organic carbon (SOC), water-soluble carbon (WSC), potentially mineralizable
nitrogen (PMN), N-NO3- and exchangeable N-NH4+, microbial biomass carbon (MBC), soil CO2
evolution (SR), beta-glucosidase activity (GLU) and soil mean weight diameter (MWD) of aggregates
and water-stable aggregates (WSA). The highest rate of F-SMS and C-SMS (25 Mg ha(-1)) increased
SOC, total nitrogen (Total N), and labile organic forms (WSC and PMN) at 0- to 5- and 5- to 15-cm
soil depth and microbiological activity (MBC and GLU) at 5- to 15-cm soil depth. There were no
differences in soil CO2 emissions between F-SMS and C-SMS amendments. Applications of SMS did not
increase the soil aggregation but increased the content of inorganic N in the soil surface (0- to
5-cm depth) layer. Factor analysis showed the positive relationship between labile organic matter
fractions and N availability. Finally, application of SMS to semiarid vineyard soils facilities
SMS recycling with simultaneous improvement in soil quality indicators related to labile organic
matter and microbiologic activity. However, increased PMN and soil N-NO3- indicate a potential
risks for N leaching from SMS amendments that should be further evaluated.