Download or read book On Site and Off Site Long Term Economic Impacts of Soil Fertility Management Practices The Case of Maize Based Cropping Systems in Kenya written by Ephraim Nkonya, Patrick Gicheru, Johannes Woelcke, Barrack Okoba, Daniel Kilambya, and Louis N. Gachimbi and published by Intl Food Policy Res Inst. This book was released on with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book On site and Off Site Long term Economic Impacts of Soil Fertility Management Practices written by Ephraim Nkonya and published by . This book was released on 2008 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nitrogen Fixation in Tropical Cropping Systems written by K. E. Giller and published by CABI. This book was released on 2001 with total page 443 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen fixation by leguminous plants is especially important when farmers are trying to minimise fertilizer use for cost or environmental reasons. This second edition of the highly successful book, first published in 1991, contains thoroughly updated and revised material on the theory and practice of nitrogen fixation in tropical cropping systems.

Download or read book Soil fertility research for maize based farming systems in Malawi and Zimbabwe written by Stephen R. Waddington and published by CIMMYT. This book was released on 1998 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Economic Impact of Climate Change on Kenyan Crop Agriculture A Ricardian Approach written by Jane Kabubo-Mariara and published by World Bank Publications. This book was released on 2007 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: This paper measures the economic impact of climate on crops in Kenya. The analysis is based on cross-sectional climate, hydrological, soil, and household level data for a sample of 816 households, and uses a seasonal Ricardian model. Estimated marginal impacts of climate variables suggest that global warming is harmful for agricultural productivity and that changes in temperature are much more important than changes in precipitation. This result is confirmed by the predicted impact of various climate change scenarios on agriculture. The results further confirm that the temperature component of global warming is much more important than precipitation. The authors analyze farmers' perceptions of climate variations and their adaptation to these, and also constraints on adaptation mechanisms. The results suggest that farmers in Kenya are aware of short-term climate change, that most of them have noticed an increase in temperatures, and that some have taken adaptive measures.

Download or read book Economics of Land Degradation and Improvement A Global Assessment for Sustainable Development written by Ephraim Nkonya and published by Springer. This book was released on 2015-11-11 with total page 695 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume deals with land degradation, which is occurring in almost all terrestrial biomes and agro-ecologies, in both low and high income countries and is stretching to about 30% of the total global land area. About three billion people reside in these degraded lands. However, the impact of land degradation is especially severe on livelihoods of the poor who heavily depend on natural resources. The annual global cost of land degradation due to land use and cover change (LUCC) and lower cropland and rangeland productivity is estimated to be about 300 billion USD. Sub-Saharan Africa (SSA) accounts for the largest share (22%) of the total global cost of land degradation. Only about 38% of the cost of land degradation due to LUCC - which accounts for 78% of the US$300 billion loss – is borne by land users and the remaining share (62%) is borne by consumers of ecosystem services off the farm. The results in this volume indicate that reversing land degradation trends makes both economic sense, and has multiple social and environmental benefits. On average, one US dollar investment into restoration of degraded land returns five US dollars. The findings of the country case studies call for increased investments into the rehabilitation and restoration of degraded lands, including through such institutional and policy measures as strengthening community participation for sustainable land management, enhancing government effectiveness and rule of law, improving access to markets and rural services, and securing land tenure. The assessment in this volume has been conducted at a time when there is an elevated interest in private land investments and when global efforts to achieve sustainable development objectives have intensified. In this regard, the results of this volume can contribute significantly to the ongoing policy debate and efforts to design strategies for achieving sustainable development goals and related efforts to address land degradation and halt biodiversity loss.

Download or read book OECD FAO Agricultural Outlook 2019 2028 written by OECD and published by OECD Publishing. This book was released on 2019-07-08 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Agricultural Outlook 2019-2028 is a collaborative effort of the Organisation for Economic Co-operation and Development (OECD) and the Food and Agriculture Organization (FAO) of the United Nations. It brings together the commodity, policy and country expertise of both organisations as well ...

Download or read book Integrated Soil Fertility Management in Africa written by Nteranya Sanginga and published by CIAT. This book was released on 2009 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forward. A call for integrated soil fertility management in Africa. Introduction. ISFM and the African farmer. Part I. The principles of ISFM: ISFM as a strategic goal, Fertilizer management within ISFM, Agro-minerals in ISFM, Organic resource management, ISFM, soil biota and soil health. Part II. ISFM practices: ISFM products and fields practices, ISFM practice in drylands, ISFM practice in savannas and woodlands, ISFM practice in the humid forest zone, Conservation Agriculture. Part III. The process of implementing ISFM: soil fertility diagnosis, soil fertility management advice, Dissemination of ISFM technologies, Designing an ISFM adoption project, ISFM at farm and landscape scales. Part IV. The social dimensions of ISFM: The role of ISFM in gender empowerment, ISFM and household nutrition, Capacity building in ISFM, ISFM in the policy arena, Marketing support for ISFM, Advancing ISFM in Africa. Appendices: Mineral nutrient contents of some common organic resources.

Download or read book The Impact of Agroforestry based Soil Fertility Replenishment Practices on the Poor in Western Kenya written by Place, Frank and published by Intl Food Policy Res Inst. This book was released on 2005 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is widely accepted that food production benefits from agricultural research, but whether that research benefits the poor is less certain. In 2000, the World Agroforestry Centre and the International Food Policy Research Institute began examining the impact of soil fertility replenishment technologies on the poor in western Kenya. This report is one of seven case studies that comprise a broader IFPRI-managed study designed to determine how agricultural research is benefiting poor people. The goal of this broader study is to identify the conditions under which agricultural research reduces poverty and to improve the targeting of research to the changing needs of the poor. The study develops methods for evaluating the impact of agricultural research on poverty in the context of different agricultural technologies and within different country, social, and institutional settings. It also establishes a foundation that allows agricultural research centers to assess the impact of their work, identify research priorities, and guide technological design to increase future impact on poverty.

Download or read book Soil and Soil Fertility Management Research in Sub Saharan Africa written by Henk Mutsaers and published by Routledge. This book was released on 2017-03-27 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Judicious soil fertility management is crucial for sustainable crop production and food security in sub-Saharan Africa (SSA). This book describes the various concepts and approaches underlying soil and soil fertility management research in SSA over the last fifty years. It provides examples of important innovations generated and assesses the position of research within the research-to-development continuum, including how innovations have been validated with the intended beneficiaries. Using the experience of the International Institute of Tropical Agriculture (IITA) as a case study, the authors analyse how processes, partnerships and other factors have affected research priorities, the delivery of outputs, and their uptake by farming communities in SSA. They evaluate both successes and failures of past investments in soil fertility research and important lessons learnt which provide crucial information for national and international scientists currently engaged in this research area. The book is organised in a number of chapters each covering a chronological period characterised by its primary research content and approaches and by the dominant research paradigms and delivery models.

Download or read book An Updated Look at the Recovery of Agricultural Productivity in Sub Saharan Africa written by Alejandro Nin Pratt and Bingxin Yu and published by Intl Food Policy Res Inst. This book was released on with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Impact of Agroforestry based Soil Fertility Replenishment Practices on the Poor in Western Kenya written by Frank Place and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This case study explores the relationships between agroforestry-based soil fertility replenishment (SFR) systems (improved fallows and biomass transfer) and poverty reduction in rural western Kenya. It further examines the role that different dissemination approaches play in conditioning which segments of society gain access to information to the technologies and then uses them. The study made use of many different qualitative and quantitative data collection methods and samples from both pilot areas where researchers maintained a significant presence and nonpilot areas where farmers learned of the technologies through other channels. Adoption processes were analyzed quantitatively using almost 2,000 households while changes in impact indicators were measured for just over 100 households. Qualitative methods included case studies for 40 households, where researchers lived in the villages for six months, and focus group discussions involving 16 different groups. The findings showed that poverty is rampant among households and appeared to worsen during the study period. The poor were reached by many different information providers and liked certain aspects of almost all types of organizations, from government extension to community group-based methods. Access to information is mediated by social relationships of wealth, gender and status; nevertheless, poor farmers acquired a significant amount of knowledge about soil fertility management. Adoption rates are not outstanding but they are encouraging, with about 20% of all farmers using the technologies on a regular basis, and a sizable percentage of farmers newly testing. Unlike some agricultural technologies historically, SFR was found not to be biased toward people controlling and managing resources above a certain threshold. The study also found that the poor were using the agroforestry technologies to a much greater extent than they were fertilizer (about 33% of farmers not using any other soil fertility practice were trying the new systems). The technologies were almost always at least doubling yields of maize. Despite these promising signs, the systems were not found to be linked to improved household-level food security or poverty indicators, primarily because the size of the fields under the agroforestry systems was, on average, quite small.

Download or read book Economic Transformation in Theory and Practice What are the Messages for Africa written by Clemens Breisinger and Xinshen Diao and published by Intl Food Policy Res Inst. This book was released on 2008 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Access to Irrigation and the Escape from Poverty Evidence from Northern Mali written by Andrew Dillon and published by Intl Food Policy Res Inst. This book was released on 2008 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Understanding the Investment and Abandonment Behavior of Poor Households An Empirical Investigation written by Ruth Vargas Hill and published by Intl Food Policy Res Inst. This book was released on 2008 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potential On and Off Site Environmental Impacts of Large Agricultural Investments Versus Small scale Farming in Kenya and Mozambique written by Maya Paula Ferreira Martins Da Silva and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the last decade, Africa has been targeted by large-scale agricultural investments (LAIs) in the global rush for agricultural land and resources. This potential land use change has generated multifaceted and controversial political, environmental, economic, legal, and ethical issues. Despite this, in the case of Mozambique and Kenya, land use in the region remains dominated by small-scale farmers (SSFs) who are competing with LAIs for limited natural resources. In this study, the agronomic potential and environmental impacts of LAIs versus SSFs for two case studies in Kenya and Mozambique were investigated. The aim was to highlight major yield-limiting factors and environmental threats to better inform resource management and the sustainable integration of LAIs into the local landscape. Using data collected from interviews with LAIs and SSFs, a characterization of representative management practices and cropping systems was constructed. These 0́−virtual farms0́+ were analysed using a Life Cycle Assessment (LCA) approach to quantify potential off-site environmental impact indicators, namely: Eutrophication Potential (EP), Acidification Potential (AP), Global Warming Potential (GWP), the Water Footprint (WF), and Non-Renewable Energy (NRE) consumption. Furthermore, the APSIM model calibrated with local soil and weather data was used to quantify on-site soil degradation in the form of soil organic carbon (C) and total soil nitrogen (N) depletion and investigate yield gaps for each system. Water scarcity was identified as the main limiting factor for SSF production in the Kenyan study region. The relatively high WF of LAIs and the collective WF of SSF irrigation pose a serious threat to already scarce blue water resources. A high demand for land was observed in the Mozambican study region. LAIs are contributing to land issues indirectly by displacing SSFs, thereby expanding cropland into areas previously under natural vegetation, and more directly through soil degradation. The LAIs0́9 strategy of input intensification resulted in relatively high potential off-site impacts in both regions. In Kenya, this was offset by high yields, while in Mozambique the LAI yield gap remained high indicating low resource-use efficiency. Yield gaps for SSFs were high in both regions due to negligible input use in Mozambique and low resource-use efficiency in Kenya. Even though LAI systems are more productive than SSF systems, xvi their intensification strategies have been shown to be unsustainable if management practices are not improved. On the other hand, the low yields observed in SSF systems are agronomically unproductive and also environmentally unsustainable. While acknowledging that there are a myriad of factors contributing to the adoption of sustainable crop production practices, management strategies should be revised if both systems are to co-exist sustainably for decades to come. It is recommended that policies should be implemented to capture the positive spill-over effects from the introduction and re-introduction of LAIs to the region, specifically by promoting sustainable technology and information transfers, credit and short-term loans, and by improving the supply chains of important agrochemicals. Keywords: land grabbing, life cycle assessments, APSIM modelling, water footprint, virtual farm

Download or read book Agriculture for Development in Ghana New Opportunities and Challenges written by Clemens Breisinger, Xinshen Diao, James Thurlow, and Ramatu M. Al-Hassan and published by Intl Food Policy Res Inst. This book was released on with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: