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Dive into the research topics where Sabine Homann-Kee Tui is active.

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Featured researches published by Sabine Homann-Kee Tui.


Regional Environmental Change | 2016

Climate change adaptation and mitigation in smallholder crop–livestock systems in sub-Saharan Africa: a call for integrated impact assessments

Katrien Descheemaeker; S.J. Oosting; Sabine Homann-Kee Tui; P. Masikati; Gatien N. Falconnier; Ken E. Giller

African mixed crop–livestock systems are vulnerable to climate change and need to adapt in order to improve productivity and sustain people’s livelihoods. These smallholder systems are characterized by high greenhouse gas emission rates, but could play a role in their mitigation. Although the impact of climate change is projected to be large, many uncertainties persist, in particular with respect to impacts on livestock and grazing components, whole-farm dynamics and heterogeneous farm populations. We summarize the current understanding on impacts and vulnerability and highlight key knowledge gaps for the separate system components and the mixed farming systems as a whole. Numerous adaptation and mitigation options exist for crop–livestock systems. We provide an overview by distinguishing risk management, diversification and sustainable intensification strategies, and by focusing on the contribution to the three pillars of climate-smart agriculture. Despite the potential solutions, smallholders face major constraints at various scales, including small farm sizes, the lack of response to the proposed measures and the multi-functionality of the livestock herd. Major institutional barriers include poor access to markets and relevant knowledge, land tenure insecurity and the common property status of most grazing resources. These limit the adoption potential and hence the potential impact on resilience and mitigation. In order to effectively inform decision-making, we therefore call for integrated, system-oriented impact assessments and a realistic consideration of the adoption constraints in smallholder systems. Building on agricultural system model development, integrated impact assessments and scenario analyses can inform the co-design and implementation of adaptation and mitigation strategies.F


Experimental Agriculture | 2011

UNDERSTANDING COMMUNITY PERCEPTIONS OF LAND USE CHANGES IN THE RANGELANDS, ZIMBABWE

Andrew Sibanda; Sabine Homann-Kee Tui; Andre F. van Rooyen; John Dimes; Daniel Nkomboni; Givious Sisito

The objective of this study was to investigate the user communities’ understanding and interpretation of changes in rangeland use and productivity in the communal lands of Zimbabwe. While external knowledge has been instrumental in defining the drivers and effects of ecological changes hitherto, the role of local knowledge is becoming increasingly important in explaining factors that inform user community perceptions and guide their decisions on the use of rangeland resources. Data on community perceptions were collected in four villages, using Participatory Rural Appraisals in each village and household surveys with a total of 104 households. This study showed that user communities in Nkayi district differentiate rangelands among seven categories of livestock feed resources and how these have changed over time. Communities viewed rangelands not as one continuous, designated and specialized land parcel, but differentiated the land by location, productivity, management and uses in different times of the year. Although land use changes affecting these livestock feed resources were considered to be widespread and multi-directional (both negative and positive) they did not cause widespread degradation. Rangelands converted to croplands were not completely lost, but became important dual purpose land parcels fulfilling both household food security needs and dry season livestock feed requirements. The importance of croplands as a feed resource is reflected in the emergence of new institutions governing their use for livestock grazing and to guarantee security of tenure. On the other hand institutions governing the use of common property rangelands decreased or weakened in their application. The study concludes that while this situation presents ecological challenges for the rangelands, it offers opportunities to find innovative ways of utilizing croplands as the new frontier in the provision of dry season feed resources to smallholder farmers in highly variable environments. Implications for livestock water productivity need to be investigated and water saving technologies should be promoted in the land use intensification processes.


Experimental Agriculture | 2011

Gendered Livelihood Implications for Improvements of Livestock Water Productivity in Zimbabwe

Trinity S. Senda; Don Peden; Sabine Homann-Kee Tui; Givious Sisito; Andre F. van Rooyen; Joseph Sikosana

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 differences in the capacities, opportunities, and needs of women and men. There are two important types of female-headed households, de facto and de jure. The results from this study showed thatmale-headed and de facto and de jure female-headed households sharemuch in common.They all had similar areas of cropland and access to education, finances, veterinary and extension services, and transportation and markets. Households of all types had similar herd sizes. All were desperately poor with incomes much less than a dollar a day. To rise out of poverty, the knowledge, skills and effort of all household heads will be needed. In spite of severe poverty, household heads of all types are literate and have sufficient education that can help enable adoption of intervention options that can lead to increased agricultural production and improved livelihoods. The results also showed that major differences exist in terms of the roles of men and women in ownership, management and decision making related to livestock keeping and animal production. Men clearly dominate in both ownership and decision making even though women play a major role in animal management. Only in de jure female-headed households were womenmore likely thanmen to own cattle and goats. They were also more likely to be involved in farming as a primary livelihood activity. Surprisingly, men were more likely to be involved in animal management in these de jure female-headed households. Women were also excluded from water users’ and livestock producers’ associations although a minority of men was members. By not involving the already-developed capacity of women, the community loses out on a significant opportunity to increase LWP and animal production more widely. Greater inclusion of women in decision making will be an important part of future efforts to improve livelihoods through livestock development.


Experimental Agriculture | 2018

INNOVATION PLATFORMS IN AGRICULTURAL RESEARCH FOR DEVELOPMENT

Marc Schut; Josey Kamanda; Andreas Gramzow; Thomas Dubois; Dietmar Stoian; Jens A. Andersson; Iddo Dror; Murat Sartas; Remco Mur; Shinan Kassam; Herman Brouwer; André Devaux; Claudio Velasco; Rica Joy Flor; Martin Gummert; Djuna Buizer; C. McDougall; Kristin Davis; Sabine Homann-Kee Tui; M. Lundy

Innovation platforms are fast becoming part of the mantra of agricultural research for development projects and programmes. Their basic tenet is that stakeholders depend on one another to achieve agricultural development outcomes, and hence need a space where they can learn, negotiate and coordinate to overcome challenges and capture opportunities through a facilitated innovation process. Although much has been written on how to implement and facilitate innovation platforms efficiently, few studies support ex-ante appraisal of when and for what purpose innovation platforms provide an appropriate mechanism for achieving development outcomes, and what kinds of human and financial resource investments and enabling environments are required. Without these insights, innovation platforms run the risk of being promoted as a panacea for all problems in the agricultural sector. This study makes clear that not all constraints will require innovation platforms and, if there is a simpler and cheaper alternative, that should be considered first. Based on the review of critical design principles and plausible outcomes of innovation platforms, this study provides a decision support tool for research, development and funding agencies that can enhance more critical thinking about the purposes and conditions under which innovation platforms can contribute to achieving agricultural development outcomes.


Field Crops Research | 2012

Conservation agriculture in mixed crop-livestock systems: Scoping crop residue trade-offs in Sub-Saharan Africa and South Asia

Diego Valbuena; Olaf Erenstein; Sabine Homann-Kee Tui; Tahirou Abdoulaye; L. Claessens; Alan J. Duncan; Bruno Gérard; Mariana C. Rufino; Nils Teufel; Andre F. van Rooyen; Mark T. van Wijk


Agricultural Systems | 2015

Identifying determinants, pressures and trade-offs of crop residue use in mixed smallholder farms in Sub-Saharan Africa and South Asia

Diego Valbuena; Sabine Homann-Kee Tui; Olaf Erenstein; Nils Teufel; Alan J. Duncan; Tahirou Abdoulaye; Braja Bandhu Swain; Kindu Mekonnen; Ibro Germaine; Bruno Gérard


Agricultural Systems | 2015

Economic trade-offs of biomass use in crop-livestock systems: Exploring more sustainable options in semi-arid Zimbabwe

Sabine Homann-Kee Tui; Diego Valbuena; Patricia Masikati; Katrien Descheemaeker; J. Nyamangara; L. Claessens; Olaf Erenstein; Andre F. van Rooyen; Daniel Nkomboni


Tropical and Subtropical Agroecosystems | 2009

Promoting goat markets and technology development in semi-arid Zimbabwe for food security and income growth.

Andre F. van Rooyen; Sabine Homann-Kee Tui


Field Crops Research | 2013

Assessing the potential of dual-purpose maize in southern Africa: A multi-level approach

Sabine Homann-Kee Tui; Michael Blümmel; Diego Valbuena; Albert Chirima; Patricia Masikati; Andre F. van Rooyen; Girma T. Kassie


Agricultural Systems | 2018

Effects of climate change and adaptation on the livestock component of mixed farming systems: A modelling study from semi-arid Zimbabwe

Katrien Descheemaeker; Mink Zijlstra; P. Masikati; Olivier Crespo; Sabine Homann-Kee Tui

Collaboration


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Andre F. van Rooyen

International Crops Research Institute for the Semi-Arid Tropics

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Diego Valbuena

Wageningen University and Research Centre

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Katrien Descheemaeker

Wageningen University and Research Centre

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Olaf Erenstein

International Maize and Wheat Improvement Center

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Alan J. Duncan

International Livestock Research Institute

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Iddo Dror

International Livestock Research Institute

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Nils Teufel

International Livestock Research Institute

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L. Claessens

International Crops Research Institute for the Semi-Arid Tropics

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Patricia Masikati

International Crops Research Institute for the Semi-Arid Tropics

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Djuna Buizer

Wageningen University and Research Centre

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