Biological Indicators of Soil Condition on the Kabanyolo Experimental Field, Uganda

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dc.contributor.authorIvanova, Anna
dc.contributor.authorDenisova, Elizaveta
dc.contributor.authorMusinguzi, Patrick
dc.contributor.authorOpolot, Emmanuel
dc.contributor.authorTumuhairwe, John Baptist
dc.contributor.authorPozdnyakov, Lev
dc.contributor.authorManucharova, Natalia
dc.contributor.authorIlichev, Igor
dc.contributor.authorStepanov, Aleksey
dc.contributor.authorKrasilnikov, Pavel
dc.date.accessioned2023-04-05T18:01:40Z
dc.date.available2023-04-05T18:01:40Z
dc.date.issued2021
dc.description.abstractSoil biological activity is an integral characteristic reflecting the state of soil fertility, biodiversity, and the activity of soil processes carried out by soil organisms. In Africa, studies of soil biological properties are few compared to the agrochemical research. In this paper, we present an assessment of multiple biochemical and microbiological properties of soil from an agricultural field located in the African tropical savanna. We determined basal respiration, substrate-induced respiration, C of microbial biomass, the potential activity of denitrification, nitrogen fixation activity, and estimated prokaryotic components in the soil microbial complex by quantitative PCR. Basal respiration of soils ranged from 0.77 0.04 to 1.90 0.23 g C-CO2 g􀀀1 h􀀀1, and substrateinduced respiration ranged from 3.31 0.17 to 7.84 1.04 g C-CO2 g􀀀1 h􀀀1. The C reserves of microbial biomass averaged 403.7 121.6 g C g􀀀1 of soil. The N2O emission from the upper layer on average amounted to 2.79 ng N-N2O g􀀀1 day􀀀1, and the potential denitrification activity reached 745 98 ng N-N2O g􀀀1 h􀀀1. The number of copies of bacterial genes varied from (0.19 0.02) 108 to (3.52 0.8) 108 copies g􀀀1, and of archaea—from (0.10 0.01) 107 to (0.29 0.01) 107 copies g􀀀1 of soil. These results were in good agreement with the studies in other seasonally wet tropical regions: the biological activity was relatively low. The difference between biological indicators of the experimental field and the reference profile were insignificant except for nitrogen loss, which was higher in the ploughed field. Biological indicators strongly varied in space; we explained their heterogeneity by non-uniform management practices in the course of agrochemical field experiments in the past. The use of organic fertilisers may cause the release of climatically active gases due to intensive microbial respiration and denitrification, but the intensity of emission would strongly depend on the cultivation and management method.en_US
dc.identifier.citationIvanova, A.; Denisova, E.; Musinguzi, P.; Opolot, E.; Tumuhairwe, J.B.; Pozdnyakov, L.; Manucharova, N.; Ilichev, I.; Stepanov, A.; Krasilnikov, P. Biological Indicators of Soil Condition on the Kabanyolo Experimental Field, Uganda. Agriculture 2021, 11, 1228. https://doi.org/10.3390/ agriculture11121228en_US
dc.identifier.urihttps://doi.org/10.3390/ agriculture11121228
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/8424
dc.language.isoenen_US
dc.publisherAgricultureen_US
dc.subjectCarbon cycleen_US
dc.subjectNitrogen cycleen_US
dc.subjectMicrobial biomassen_US
dc.subjectMicrobial diversityen_US
dc.subjectFertilisersen_US
dc.subjectSoil healthen_US
dc.subjectTropical savannaen_US
dc.titleBiological Indicators of Soil Condition on the Kabanyolo Experimental Field, Ugandaen_US
dc.typeArticleen_US
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