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Carbon and nutrient cycling in cocoa agroforests under organic and conventional management

dc.date.accessioned2024-09-02T09:51:32Z
dc.date.available2024-09-02T09:51:32Z
dc.date.issued2024-04-15
dc.identifierdoi:10.17170/kobra-2024081310669
dc.identifier.urihttp://hdl.handle.net/123456789/16010
dc.description.sponsorshipGefördert im Rahmen des Projekts DEALger
dc.description.sponsorshipThe research leading to these results received funding from German Academic Exchange Service (DAAD) under Grant Agreement No. 57299294.eng
dc.language.isoeng
dc.rightsNamensnennung 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectcocoa pod huskeng
dc.subjectdecompositioneng
dc.subjectlitterfalleng
dc.subjectnutrient releaseeng
dc.subjectseasonal effectseng
dc.subject.ddc570
dc.subject.ddc630
dc.titleCarbon and nutrient cycling in cocoa agroforests under organic and conventional managementeng
dc.typeAufsatz
dcterms.abstractIn cocoa agroforestry systems, cycling of leaves, pods, and branches are key for organic matter sustenance. We investigated annual total litterfall, annual nutrient stocks in total litterfall, cocoa pods and beans, as well as cocoa leaf decomposition rates in cocoa agroforestry systems under conventional and organic management in Suhum Municipality, Eastern Region of Ghana. The study was conducted using six cocoa agroforests for each management selected from a total of four villages. Litterfall was collected monthly using litterboxes and a litterbag technique was employed to study the rates of leaf decomposition and nutrient release for 12 months. In June and July, total litterfall in organic farms were 94% and 65%, respectively, higher than in conventional farms, but management had no effect on average annual total litterfall of 8.8 t ha−1 yr−1 litterfall. Due to the trees’ reduced transpiration, 61% of the annual total litterfall occurred during the dry season. Whereas average leaf litter nitrogen (N) concentration was 17% higher in the rainy season than dry season, potassium (K) concentration was 38% higher during the dry season than rainy season. This likely reflected the contribution of N rich green leaves to litterfall in the rainy season and plant coping strategy to drought leading to K accumulation. Cocoa leaf decomposition was not affected by management. Annual potassium (K) and calcium (Ca) stocks in cocoa pod husk were four and nine-fold, respectively, higher than in cocoa beans. We conclude that organic versus conventional management had no effect on litterfall and cocoa leaf decomposition rather season influenced litterfall quantity and chemistry. Irrespective of management the spreading of cocoa pod husk after harvest will improve internal nutrient cycling in cocoa agroforestry systems.eng
dcterms.accessRightsopen access
dcterms.creatorAgbotui, Deogratias Kofi
dcterms.creatorIngold, Mariko
dcterms.creatorBürkert, Andreas
dc.relation.doidoi:10.1007/s10705-024-10349-6
dc.relation.projectidGrant Agreement No. 57299294
dc.subject.swdKakaoanbauger
dc.subject.swdAgroforstwirtschaftger
dc.subject.swdSchale <Biologie>ger
dc.subject.swdZersetzungger
dc.subject.swdStreuger
dc.subject.swdNährstoffger
dc.subject.swdSaisonschwankungger
dc.type.versionpublishedVersion
dcterms.source.identifiereissn:1573-0867
dcterms.source.issueIssue 1
dcterms.source.journalNutrient Cycling in Agroecosystemseng
dcterms.source.pageinfo7-20
dcterms.source.volumeVolume 129
kup.iskupfalse


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