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Cassava yields in Africa are small and it remains unclear which factors most limit yields. Using a series of farm surveys and on-farm and on-station trials in Uganda and western Kenya, we evaluated the importance of abiotic, biotic and associated crop management constraints for cassava production...


Fermont, A.M.Asten, Piet J.A. vanTittonell, Pablo A.Wijk, Mark T. vanGiller, Ken E.[Closing the cassava yield gap: an analysis from smallholder farms in East Africa]Closing the cassava yield gap: an analysis from smallholder farms in East Africa
Guiller, KETittonell, Pablo A.Rufino, Mariana C.Wijk, Mark T. vanZingore, ShamieMapfumo, PaulAdjei-Nsiah, SamuelHerrero, Mario T.Chikowo, RegisCorbeels, MarcRowe, ECBaijukya, Frederick P.Mwijage, ASmith, J.Yeboah, E.Burg, W.J. van derSanogo, O.M.Misiko, Michael T.Ridder, N.A. deKaranja, S.Kaizzi, CKungu, J.Mwale, MNwaga, DPacini, C.Vanlauwe, Bernard[Communicating complexity: integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development]Communicating complexity: integrated assessment of trade-offs concerning soil fertility management within African farming systems to support innovation and development
Tittonell, Pablo A.[Msimu wa Kupanda : Targeting resources within diverse, heterogeneous and dynamic farming systems of East Africa. Thesis (Ph.D.)]Msimu wa Kupanda : Targeting resources within diverse, heterogeneous and dynamic farming systems of East Africa. Thesis (Ph.D.)

Technological interventions to address the problem of poor productivity of smallholder agricultural systems must be designed to target socially diverse and spatially heterogeneous farms and farming systems. This paper proposes a categorisation of household diversity based on a functional typology...


Tittonell, Pablo A.Muriuki, A.Shepherd, Keith D.Mugendi, D.Kaizzi, K.C.Okeyo, J.Verchot, Louis V.Coe, R.Vanlauwe, Bernard[The diversity of rural livelihoods and their influence on soil fertility in agricultural systems of East Africa – A typology of smallholder farms]The diversity of rural livelihoods and their influence on soil fertility in agricultural systems of East Africa – A typology of smallholder farms

It has been repeatedly argued that mineral fertiliser application combined with in situ retention of crop residue biomass can sustain long-term productivity of West African soils. Using 20-year experimental data from southern Togo, a biannual rainfall area, we analysed the effect of two rates of ...


Kintché, K.Guibert, H.Sogbedji, J.M.Levêque, J.Bonfoh, BassirouTittonell, Pablo A.[Long-term mineral fertiliser use and maize residue incorporation do not compensate for carbon and nutrient losses from a Ferralsol under continuous maize-cotton cropping]Long-term mineral fertiliser use and maize residue incorporation do not compensate for carbon and nutrient losses from a Ferralsol under continuous maize-cotton cropping
Andrieu, NadineVayssières, Jean-FrançoisCorbeels, MarcBlanchard, M.Vall, EricTittonell, Pablo A.[From farm scale synergies to village scale trade-offs: cereal crop residues use in an agro-pastoral system of the Sudanian zone of Burkina Faso]From farm scale synergies to village scale trade-offs: cereal crop residues use in an agro-pastoral system of the Sudanian zone of Burkina Faso

Different fields within a farm have been observed to have different soil fertility status and this may affect the response of a maize crop to applied N, P, and K fertiliser. A limiting nutrient trial was carried out at six farms each, in three districts of Western Kenya. In each of the farms, the...


Vanlauwe, BernardTittonell, Pablo A.Mukulama, J[Within-farm soil fertility gradients affect response of maize to fertilizer application in Western Kenya]Within-farm soil fertility gradients affect response of maize to fertilizer application in Western Kenya

To guide soil fertility investment programmes in sub-Saharan Africa, better understanding is needed of the relative importance of soil and crop management factors in determining smallholder crop yields and yield variability. Spatial variability in crop yields within farms is strongly influenced b...


Tittonell, Pablo A.Shepherd, Keith D.Vanlauwe, BernardGiller, Ken E.[Unravelling the effects of soil and crop management on maize productivity in smallholder agricultural systems of western Kenya : An application of classification and regression tree analysis]Unravelling the effects of soil and crop management on maize productivity in smallholder agricultural systems of western Kenya : An application of classification and regression tree analysis

Strong gradients of decreasing soil fertility are found with increasing distance from the homestead within smallholder African farms, due to differential resource allocation. As nutrient use efficiency varies strongly along these gradients, such heterogeneity must be considered when designing soi...


Tittonell, Pablo A.Vanlauwe, BernardLeffelaar, P.A.Shepherd, Keith D.Giller, Ken E.[Exploring diversity in soil fertility management of smallholder farms in western Kenya. II. Within-farm variability in resource allocation, nutrient flows and soil fertility status]Exploring diversity in soil fertility management of smallholder farms in western Kenya. II. Within-farm variability in resource allocation, nutrient flows and soil fertility status

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