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Gildemacher, P.R.Schulte-Geldermann, ElmarBorus, D.Demo, P.Kinyae, P.Mundia, P.Struik, Paul C.[Seed potato quality improvement through positive selection by smallholder farmers in Kenya.]Seed potato quality improvement through positive selection by smallholder farmers in Kenya.

Schulte-Geldermann, ElmarGildemacher, P.Struik, Paul C.[Improving seed health and seed performance by positive selection in three kenyan potato varieties.]Improving seed health and seed performance by positive selection in three kenyan potato varieties.

Continuous cultivation of potato (Solanum tuberosum L.) in monoculture systems represents the greatest factor deteriorating soil organic matter (SOM) in smallholder farms. With an aim to breaking this norm, a 2-year field trial intercropping potato with two legumes: lima bean (Phaseolus lunatus) ...


Nyawade, S.Karanja, N.N.Gachene, C.K.K.Gitari, H.I.Schulte-Geldermann, ElmarParker, M.[Short-term dynamics of soil organic matter fractions and microbial activity in smallholder potato-legume intercropping systems.]Short-term dynamics of soil organic matter fractions and microbial activity in smallholder potato-legume intercropping systems.

In 2012, Africa RISING conducted participatory community analysis (PCA) as the first phase of a participatory development approach in the Ethiopian highlands. The PCA identified trends, constraints, and opportunities – and shed light upon how farmers perceive livelihoods to be changing. Inputs, d...


Lunt, T.Ellis-Jones, J.Mekonnen, KinduSchulz, S.Thorne, Peter J.Schulte-Geldermann, ElmarSharma, K.[Participatory community analysis: Identifying and addressing challenges to Ethiopian smallholder livelihoods]Participatory community analysis: Identifying and addressing challenges to Ethiopian smallholder livelihoods

Even though potato (Solanum tuberosum L.)-based intercropping systems are widely practised in developing countries, only a few studies have focused on legumes as the companion intercrops. This study was conducted to assess the effect of incorporating legumes into the potato production system on g...


Gitari, H.I.Gachene, C.K.K.Kamau, S.Nyawade, S.Sharma, K.Schulte-Geldermann, ElmarKaranja, N.[Optimizing yield and economic returns of rain-fed potato (Solanum tuberosum L.) through water conservation under potato-legume intercropping systems.]Optimizing yield and economic returns of rain-fed potato (Solanum tuberosum L.) through water conservation under potato-legume intercropping systems.

Soil erosion rates are exacerbated in sloping arable lands of Central Kenya due mainly to the high soil disturbance caused by potato hilling. A field study was conducted in runoff plots to quantify the effect of potato hilling on soil loss, soil moisture distribution and soil temperature. Three h...


Nyawade, S.Karanja, N.Gachene, C.K.K.Schulte-Geldermann, ElmarParker, M.[Effect of potato hilling on soil temperature, soil moisture distribution and sediment yield on a sloping terrain]Effect of potato hilling on soil temperature, soil moisture distribution and sediment yield on a sloping terrain

Purpose – Potato is a major food staple in Africa, but its production is constrained by poor quality of seed. A recent private–public partnership in Tanzania resulted in introduction of new higher yielding varieties. The purpose of this paper is to examine smallholder farmers’ motivations to inve...


Okello, J.J.Lagerkvist, C.J.Kakuhenzire, R.Parker, M.Schulte-Geldermann, Elmar[Combining means-end chain analysis and goal-priming to analyze Tanzanian farmers’ motivations to invest in quality seed of new potato varieties]Combining means-end chain analysis and goal-priming to analyze Tanzanian farmers’ motivations to invest in quality seed of new potato varieties

Bacterial wilt, caused by Ralstonia solanacearum, is emerging as a major threat to potato production in Ethiopia, reaching epidemic proportions in the Chencha district recently, with a prevalence of 97% of potato fields in 2015. The recent disease outbreak in the district coincided with a signifi...


Abdurahman, A.Griffin, D.Elphinstone, J.Struik, P.C.Schulz, S.Schulte-Geldermann, ElmarSharma, K.[Molecular characterization of Ralstonia solanacearum strains from Ethiopia and tracing potential source of bacterial wilt disease outbreak in seed potatoes]Molecular characterization of Ralstonia solanacearum strains from Ethiopia and tracing potential source of bacterial wilt disease outbreak in seed potatoes

Competition for nitrogen (N) and phosphorous (P) under potato-based intercropping systems decreases the level of nutrients available for potato and subsequently influences nitrogen and phosphorous use efficiency. A field trial was conducted for four consecutive seasons between 2014 short rains an...


Gitari, H.I.Karanja, N.Gachene, C.K.K.Kamau, S.Sharma, K.Schulte-Geldermann, Elmar[Nitrogen and phosphorous uptake by potato (Solanum tuberosum L.) and their use efficiency under potato-legume intercropping systems]Nitrogen and phosphorous uptake by potato (Solanum tuberosum L.) and their use efficiency under potato-legume intercropping systems

Phosphorus (P) is an essential element and its efficient use is of global importance. This study evaluated the effect of growing potato under legume intercrops on P uptake and use efficiency indices: P harvest index (PHI), P uptake efficiency (PuPE), P partial factor productivity (PPFP) and P par...


Gitari, H.I.Nyawade, S.Kamau, S.Karanja, N.N.Gachene, C.K.K.Schulte-Geldermann, Elmar[Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops.]Agronomic assessment of phosphorus efficacy for potato (Solanum tuberosum L) under legume intercrops.

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