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In complex mixed crop-livestock systems with limited resources and biomass scarcity, crop residues play an important but increasingly contested role. This paper focuses on farming systems in the semi-arid areas of Zimbabwe, where biomass production is limited and farmers integrate crop and livest...


Homann-Kee Tui, SabineValbuena, DiegoMasikati, PatriciaDescheemaeker, KatrienNyamangara, JusticeClaessens, LievenErenstein, OlafRooyen, Andre F. vanNkomboni, D.[Economic trade-offs of biomass use in crop-livestock systems: Exploring more sustainable options in semi-arid Zimbabwe]Economic trade-offs of biomass use in crop-livestock systems: Exploring more sustainable options in semi-arid Zimbabwe

This study provides an overview of extension influence on the adoption of irrigation innovations in developed and developing countries, and finds that extension plays a more significant positive role in influencing soft technology adoption in developing countries. Case studies on the nature, use ...


Wheeler, Sarah AnnZuo, AlecBjornlund, HenningVictor Mdemu, MakariusRooyen, Andre F. vanMunguambe, Paiva[An overview of extension use in irrigated agriculture and case studies in south-eastern Africa]An overview of extension use in irrigated agriculture and case studies in south-eastern Africa

Many small-scale irrigation systems are characterized by low yields and deteriorating infrastructure. Interventions often erroneously focus on increasing yields and rehabilitating infrastructure. Small-scale irrigation systems have many of the characteristics of complex socio-ecological systems, ...


Rooyen, Andre F. vanRamshaw, PeterMoyo, MartinStirzaker, RichardBjornlund, Henning[Theory and application of Agricultural Innovation Platforms for improved irrigation scheme management in Southern Africa]Theory and application of Agricultural Innovation Platforms for improved irrigation scheme management in Southern Africa

Irrigation development in Sub-Saharan Africa has lagged significantly behind that in other developing countries. Consequently, economic development and food security are also lagging behind. Since the mid-2000s there has been a resurgence in the willingness to invest in irrigation, and Sub-Sahara...


Bjornlund, HenningRooyen, Andre F. vanStirzaker, Richard[Profitability and productivity barriers and opportunities in small-scale irrigation schemes]Profitability and productivity barriers and opportunities in small-scale irrigation schemes

Productivity barriers and opportunities influencing smallholder irrigation sustainability in Zimbabwe were identified using case studies of the Silalatshani and Mkoba irrigation schemes. The major barriers were poor infrastructure and soil fertility, and poor access to farm inputs, farm implement...


Moyo, MartinRooyen, Andre F. vanChivenge, P.P.Bjornlund, Henning[Irrigation development in Zimbabwe: understanding productivity barriers and opportunities at Mkoba and Silalatshani irrigation schemes]Irrigation development in Zimbabwe: understanding productivity barriers and opportunities at Mkoba and Silalatshani irrigation schemes

The threat of water scarcity in sub-Saharan Africa is real, due to the expanding agricultural needs, climate variability and inappropriate land use. Livestock keeping is the fastest growing agricultural sector, partly because of increasing and changing demands for adequate, quality and diverse fo...


Amede, TilahunDescheemaeker, KatrienPeden, Donald G.Rooyen, Andre F. van[Harnessing benefits from improved livestock water productivity in crop-livestock systems of sub-Saharan Africa: synthesis]Harnessing benefits from improved livestock water productivity in crop-livestock systems of sub-Saharan Africa: synthesis

This paper explores the potential and challenges of increasing production of food and feed on existing maize fields in mixed crop-livestock systems in the semi-arid areas of southern Africa. It integrates results from different sources of data and analysis: 1. Spatial stratification using seconda...


Homann-Kee Tui, SabineBlümmel, MichaelValbuena, DiegoChirima, A.Masikati, PatriciaRooyen, Andre F. vanKassie, Girma T.[Assessing the potential of dual-purpose maize in southern Africa: A multi-level approach]Assessing the potential of dual-purpose maize in southern Africa: A multi-level approach

Innovation platforms are increasingly used by research and development initiatives to actively engage the poor in agricultural innovation processes. These platforms are forums for action and learning, where different types of actors come together to address issues of mutual concern. However, the ...


Swaans, K.Cullen, BethRooyen, Andre F. vanAdekunle, A.A.Ngwenya, H.Lema, ZelalemNederlof, S.[Dealing with critical challenges in African innovation platforms: Lessons for facilitation]Dealing with critical challenges in African innovation platforms: Lessons for facilitation

Conservation Agriculture (CA) is being advocated to enhance soil health and sustain long term crop productivity in the developing world. One of CA's key principles is the maintenance of soil cover often by retaining a proportion of crop residues on the field as mulch. Yet smallholder crop–livesto...


Valbuena, DiegoErenstein, OlafHomann-Kee Tui, SabineAbdoulaye, TahirouClaessens, LievenDuncan, Alan J.Gerard, Bruno G.Rufino, Mariana C.Teufel, NilsRooyen, Andre F. vanWijk, Mark T. van[Conservation agriculture in mixed crop-livestock systems: Scoping crop residue trade-offs in Sub-Saharan Africa and South Asia]Conservation agriculture in mixed crop-livestock systems: Scoping crop residue trade-offs in Sub-Saharan Africa and South Asia

Scarcity, lack of access, and ineffective and inefficient use of water in Nkayi District, Zimbabwe, threaten agricultural production. The purpose of this study is to augment understanding of opportunities to increase livestock water productivity (LWP) in Nkayi District by taking into account key ...


Senda, T.S.Peden, Donald G.Homann-Kee Tui, SabineSisito, G.Rooyen, Andre F. vanSikosana, J.L.N.[Gendered livelihood implications for improvements of livestock water productivity in Zimbabwe]Gendered livelihood implications for improvements of livestock water productivity in Zimbabwe

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