Published in Scientific Papers. Series A. Agronomy, Vol. LXVIII, Issue 2
Written by Ivan PRYMAK, Mykola GRABOVSKYI, Yriy FEDORUK, Nataliia PRYSIAZHNIUK, Mykola LOZINSKYI, Mykhailo VOITOVYK, Vitalina KARAULNA, Lyudmyla YEZERKOVSKA, Igor POKOTYLO
Studies (2021-2023) conducted on a typical low humus chernozem (Bila Tserkva, Ukraine) showed that in the arable layer, microbiota on starch-ammonium agar (SAA) is highest in non-fertilized plots under differentiated tillage and in fertilized plots under disc tillage. On meat peptone agar (MPA), the highest microbiota activity is observed under differentiated tillage across all plots. Microbiota on pectin-glucose agar with soil extract (PGASE), as well as nitrifying bacteria and actinomycetes, had the highest number under differentiated tillage, while the mineralization and pedotrophic coefficients had the lowest values. The lowest number of denitrifying bacteria and the highest number of nitrogen bacteria were recorded in the differentiated tillage. The activity of invertase, phosphatase dehydrogenases and polyphenol oxidases is higher, while catalase activity is lower under differentiated tillage compared to mouldboard and mouldboardless tillage. The coefficient of humus accumulation was higher under differentiated tillage and significantly lower under chisel and disking tillage. Increasing organic and mineral fertilizer rates with mouldboardless and disc tillage enhances the biological diversity of the arable layer.
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