Regenerative agriculture practices improve soil health in phosphorus deficient soils in western Kenya

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cg.authorship.typesCGIAR and developing country institute
cg.contributor.affiliationInternational Center for Tropical Agriculture
cg.contributor.affiliationKenyatta University
cg.contributor.donorCGIAR Trust Fund
cg.contributor.initiativeExcellence in Agronomy
cg.contributor.initiativeAgroecology
cg.coverage.countryKenya
cg.coverage.iso3166-alpha2KE
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.coverage.regionSub-Saharan Africa
cg.creator.identifierPeter BOLO: 0000-0002-4202-7557
cg.creator.identifierJob Kihara: 0000-0002-4394-9553
cg.creator.identifierMonicah Mucheru-Muna: 0000-0003-4340-7233
cg.creator.identifierMichael Kinyua: 0000-0001-6106-3599
cg.identifier.urlhttps://www.tropentag.de/abstract.php?code=CObpXp5Z
cg.subject.alliancebiovciatAGRICULTURE
cg.subject.alliancebiovciatBIODIVERSITY
cg.subject.alliancebiovciatSOIL HEALTH
cg.subject.impactAreaEnvironmental health and biodiversity
cg.subject.sdgSDG 1 - No poverty
cg.subject.sdgSDG 2 - Zero hunger
dc.contributor.authorBolo, Peter
dc.contributor.authorKihara, Job
dc.contributor.authorMucheru-Muna, Monicah
dc.contributor.authorKinyua, Michael
dc.date.accessioned2024-12-21T14:55:30Zen
dc.date.available2024-12-21T14:55:30Zen
dc.identifier.urihttps://hdl.handle.net/10568/168257
dc.titleRegenerative agriculture practices improve soil health in phosphorus deficient soils in western Kenyaen
dcterms.abstractRegenerative agriculture practices are key in promoting soil health, consequently enhancing soil and crop productivity. Assessment of how different regenerative agriculture practices influence key soil health indicators is imperative in broadening our understanding on soil health and quality; and informing the potential for policy advocacy. We assessed the influences of select regenerative agriculture practices (in an 18-year long-term trial) in western Kenya on four key soil health indices namely; i) Nutrient and soil organic carbon (SOC) availability; ii) Activities of 4 extracellular enzymes involved in nutrient cycling, comprising alkaline phosphatase (ALP), acid phosphatase (ACP), beta glucosidase (GLU) and beta-glucosaminidase (NAG), responsible for phosphorus (P), carbon (C) and nitrogen (N) cycling, respectively; iii) Enzyme stoichiometry ratios; and iv) Soil nutrient-enzyme activity relationships. This study was conducted in phosphorus deficient soils in Western Kenya; and was analysed using high-throughput calorimetry measurements. Results showed that regenerative agriculture practices integrating organic inputs (farmyard manure) increased the soil nutrient and SOC availability; elevated activities of the 4 extracellular enzymes involved in C, N and P cycling in the range of 22% to 144%; enhanced the enzyme stoichiometry ratios and soil nutrient-enzyme activity relationships. Both enzymatic C:N and N:P ratios were significantly enhanced under regenerative practices involving application of farmyard manure. Sole addition of P fertiliser significantly reduced enzymatic C:N ratios whereas enzymatic C:P and N:P ratios were lowest under no input systems. Key extracellular enzyme activities, their stichometry ratios, vector angles and lengths significantly correlated with different parameters involving soil pH, SOC, soil N, ACP, ALP, soil N:P and soil C:P. These results broaden our understanding of the potential soil health benefits associated with sustainable agroecological regenerative practices, calling for more research for scaling and policy advocacy.en
dcterms.accessRightsOpen Access
dcterms.bibliographicCitationBolo, P.; Kihara, J.; Mucheru-Muna, M.; Kinyua, M. (2024) Regenerative agriculture practices improve soil health in phosphorus deficient soils in western Kenya. Presented at: Tropentag Conference, 11th-13th September 2024, BOKU University, Vienna, Austria. 26 sl.en
dcterms.extent26 sl.
dcterms.issued2024-09-18
dcterms.languageen
dcterms.licenseOther
dcterms.subjectagricultureen
dcterms.subjectbiodiversityen
dcterms.subjectsoil fertilityen
dcterms.subjectsoil biologyen
dcterms.typePresentation

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