Autor: |
Sasáková, N., Kachnič, J., Hromada, R., Pavolová, H., Bakalár, T. |
Předmět: |
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Zdroj: |
Slovak Veterinary Journal / Slovenský Veterinársky časopis; 2023, Vol. 48 Issue 1, p46-51, 6p |
Abstrakt: |
The aim of this experimental study was to investigate the effect of addition of cow manure with natural zeolite-clinoptilolite and lime on decomposition processes, physicochemical parameters and microbial community composition and abundance over the period of 90 days. Throughout the composting process, the differences in total bacterial counts in C, S1 and S2 were insignificant (P > 0.05). The differences in counts of coliform and faecal coliform bacteria between C and S2 were significant (P < 0.0001). The temperature reached in the thermophilic stage was lower (less than 55 °C), which did not effectively reduce potential pathogens. The pH level in S2 was higher through out the experiment compared to the remaining substrates as a result of amendment with lime and varied from 9.16 to 7.99. In S2 we observed a significantly reduced release of N-NH4 + from the composting substrate compared to C (P < 0.05). An analysis of the variance showed significant differences in Nt content in C and S2 (P < 0.0001) and between S1 and S2 (P < 0.05). The concentration of Nt increased in all substrates and caused decrease in the C/N ratio towards the end of composting. The content of Nt in the substrates with zeolite increased by 44 % in S1 and 45 % in S2 compared to the control. The results showed that by enriching the composted manure with inorganic materials such as zeolite and lime, the loss of nitrogen compounds from the compost is reduced and the inactivation of microorganisms is affected. [ABSTRACT FROM AUTHOR] |
Databáze: |
Complementary Index |
Externí odkaz: |
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