Participatory on-farm conservation tillage trial in the Ethiopian highland Vertisols: The impact of potassium application on crop yields

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dc.creatorAstatke, A.
dc.creatorMamo, T.
dc.creatorPeden, Donald G.
dc.creatorDiedhiou, M.
dc.date2004-07
dc.date2013-07-03T05:25:44Z
dc.date2013-07-03T05:25:44Z
dc.date.accessioned2026-06-27T16:47:22Z
dc.descriptionThe two years on-farm tillage research during the 1999 and 2000 cropping seasons in Ethiopian highland Vertisol area demonstrated the importance of adapting cultural practices into participatory trials. The minimum tillage package could be an effective intervention for soil conservation due to the early-vegetative cover of the soil. Based on farmers’ application of ash on Vertisols at Chefe Donsa, the incorporation of 50 kg ha-1 of potassium sulphate (K2SO4) in the on-farm trial significantly increased grain and straw yields of wheat. The nitrogen levels in the grain and straw of wheat on plots given K2SO4 were higher than those without. The nitrogen level for both wheat grain and straw was even higher when grown on plots previously growing legumes that received K2SO4. This showed that the availability of extra potassium in these soils improved the extraction of nitrogen by the wheat crop, thus improving the grain yield. The findings indicate the need to reassess the traditionally-practised system of not applying potassium fertilizer to Ethiopian soils.
dc.identifierhttps://hdl.handle.net/10568/32909
dc.identifier.urihttp://hdl.handle.net/123456789/133192
dc.languageen
dc.publisherCambridge University Press
dc.rightsLimited Access
dc.sourceExperimental Agriculture;40(3): 369-379
dc.subjectvertisols
dc.subjecttillage
dc.subjectwheats
dc.subjectcrop yield
dc.subjecthighlands
dc.subjectseed weight
dc.subjectvarieties
dc.subjectpotassium
dc.subjectfertilizer application
dc.subjecton-farm research
dc.subjectfarmers [agricultural population]
dc.subjectsoil fertility
dc.subjectfarming systems
dc.subjectland management
dc.subjectgrain crops
dc.subjectstraw
dc.titleParticipatory on-farm conservation tillage trial in the Ethiopian highland Vertisols: The impact of potassium application on crop yields
dc.typeJournal Article

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Instituto Internacional de Investigaciones Pecuarias (ILRI)