Izvorni znanstveni članak
https://doi.org/https://doi.org/10.5513/JCEA01/25.4.4456
Short-term changes of soil microbial functional diversity induced by mineral and organic fertilizers
Dumitrița DASCĂLU
; University of Agricultural Sciences and Veterinary Medicine, Faculty of Agriculture, Calea Mănăştur 3-5, 400372, ClujNapoca, Romania
Bogdan-Mihai ONICA
; University of Agricultural Sciences and Veterinary Medicine, Faculty of Agriculture, Calea Mănăştur 3-5, 400372, ClujNapoca, Romania
Vlad STOIAN
; University of Agricultural Sciences and Veterinary Medicine, Faculty of Agriculture, Calea Mănăştur 3-5, 400372, ClujNapoca, Romania
Bianca DUMEA
; University of Agricultural Sciences and Veterinary Medicine, Faculty of Agriculture, Calea Mănăştur 3-5, 400372, ClujNapoca, Romania
Valentina STOIAN
; University of Agricultural Sciences and Veterinary Medicine, Faculty of Agriculture, Calea Mănăştur 3-5, 400372, ClujNapoca, Romania
Roxana VIDICAN
; University of Agricultural Sciences and Veterinary Medicine, Faculty of Agriculture, Calea Mănăştur 3-5, 400372, ClujNapoca, Romania
Sažetak
The use of both mineral and organic fertilizers is a key agricultural practice with a relevant impact on soil processes and fertility. This study examined how three organic fertilizers (slurry, cattle manure and mustard as green manure) and one chemical fertilizer (ammonium nitrate) can affect soil microbial functional diversity and soil biochemical processes. A short-term experiment was organized under controlled conditions for 30 days. Soil samples were collected every ten days in order to measure soil pH, N-NH4, N-NO3 and microbial activity as a community-level physiological profile (CLPP). The MicroResp method was used to assess community-level physiological profiles by using 15 different carbon sources and converting their catabolic activity to CO2. The obtained results showed that cattle manure and slurry have a significant impact on CLPP and mineralization during the first 10 days while mustard applied as green manure impacted soil parameters after 10 days. The use of chemical fertilizer had limited effect on CLPP. The organic substrates α-ketoglutaric acid and oxalic acid gave the highest metabolic activity and drove the pattern use substrate in the experimental soils.
Ključne riječi
community-level physiological profiling; MicroResp; substrate utilization; microbial community; fertilization
Hrčak ID:
325011
URI
Datum izdavanja:
23.12.2024.
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