Soil organic matter storage in irrigated Tsitsikamma dairy farms with minimum tilled pasture mixtures: case studies

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dc.contributor.authorLoke, Palo Francis
dc.contributor.authorKotze, Elmarie
dc.contributor.authorDu Preez, Christiaan Cornelius
dc.date.accessioned2022-08-22T11:16:10Z
dc.date.available2022-08-22T11:16:10Z
dc.date.issued2022
dc.description.abstractIn recent years, pasture production changed from conventional tilled single pastures to minimum tilled mixed pastures in the Tsitsikamma region, South Africa. However, storage of soil organic matter (SOM) under minimum tilled mixed pastures is not yet quantified. This study evaluated SOM indices in the upper 60 cm soil of six-year-old mixed pastures in the Upper (UT) and Lower (LT) Tsitsikamma regions. Soil samples were collected at 0–15, 15–30, 30–45, and 45–60 cm soil layers of five farms (F1, F2, F3, F4, and F5) treated with different rates of fertilizer (NPK) alone and in combination with dairy effluent (DE) and/or poultry manure (PM). Results of this study indicated that there were no significant differences in bulk density, total nitrogen (N), and rate of potentially mineralizable N (PMN) between farms in the UT region. In the LT region, NPK, DE, and PM combinations improved soil C accumulation relative to the soil application of NPK. Higher C/N ratios in the LT region suggested adequate C for microbial energy and maintenance. Integrating manure into minimum tilled pasture mixtures as a replacement for synthetic fertilizers seems to be a feasible option to promote SOM storage, but remains only feasible by applying site-specific management strategies.en_ZA
dc.description.versionPublisher's versionen_ZA
dc.identifierhttps://doi.org/10.3390/agriculture12060858
dc.identifier.citationLoke, P.F., Kotzé, E., & Du Preez, C.C. (2022). Soil organic matter storage in irrigated Tsitsikamma dairy farms with minimum tilled pasture mixtures: case studies. Agriculture, 12, 858. https://doi.org/10.3390/agriculture12060858en_ZA
dc.identifier.issnhttps://doi.org/10.3390/agriculture12060858
dc.identifier.urihttp://hdl.handle.net/11660/11856
dc.language.isoenen_ZA
dc.publisherMDPIen_ZA
dc.rights.holderAuthor(s)en_ZA
dc.rights.licensehttps://creativecommons.org/licenses/by/4.0/
dc.subjectIrrigationen_ZA
dc.subjectKikuyu-ryegrass-clover intercroppingen_ZA
dc.subjectOrgana-chemical fertilisationen_ZA
dc.subjectSandy soilsen_ZA
dc.subjectSoil organic matter indicesen_ZA
dc.subjectTemperate climateen_ZA
dc.titleSoil organic matter storage in irrigated Tsitsikamma dairy farms with minimum tilled pasture mixtures: case studiesen_ZA
dc.typeArticleen_ZA
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