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Home CIAT > TSBF Institute of CIAT >

Integrated soil fertility management in the tropics: From knowledge to implementation

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Nteranya Sanginga


This document represents the strategy for the period 2005-2010 of the Tropical Soil Biology and Fertility Institute of CIAT (TSBF-CIAT). Since its founding in 1984, TSBF has conducted research on the role of biological and organic resources in tropical soil biology and fertility and its relationship to the natural and social environment, in order to provide farmers with improved soil management practices to sustainably improve their livelihoods.

In recent years, TSBF-CIAT's research for development approach has been based on an Integrated Soil Fertility Management (ISFM) paradigm. ISFM is a holistic approach to soil fertility research that embraces the full range of driving factors and consequences of soil degradation-biological, physical, chemical, social, cultural, economic and political.

However, successful resource management and sustainable agricultural productivity need to go still further, addressing socio-cultural realities in the realms of markets, health and policies. The central hypothesis is that natural resource management research will have more leverage if the apparent gaps between investment in the natural resource base and equitable income generation and distribution can be bridged. Therefore, TSBF-CIAT's new strategy proposes to take ISFM further forward, by addressing the full chain of interactions from resources to production systems to markets, socio-cultural forces, and policies. Under the new framework, investment in soil fertility management represents a key entry point to sustainable agricultural productivity growth, and a necessary condition for obtaining positive net returns to other types of farm investments.

TSBF-CIAT will pursue the following objectives under the new strategy:

  • to improve the livelihoods of people reliant on agriculture by developing sustainable, profitable, socially just and resilient agricultural production systems based on ISFM;
  • to develop sustainable land management (SLM) practices in tropical areas while reversing land degradation; and
  • to enhance the human and social capital of all TSBF-CIAT stakeholders for research and management on the sustainable use of tropical soils.

To achieve these objectives, TSBF-CIAT's work will be organized into six programmatic thrusts:

  1. intensification and diversification of cropping systems;
  2. managing the genetic resources of soil for enhanced productivity and plant health;
  3. moving from plot to landscape scale to address sustainable land management challenges;
  4. understanding farm-level social, cultural, and gender dynamics
  5. linking farmers to markets; and
  6. collaboration and strengthening of NARES capacity.

The above programmatic thrusts contribute to CIAT's Development Challenges:

  • Enhancing and sharing the benefits of agrobiodiversity
  • Improving the management of agroecosystems in the tropics and
  • Enhancing rural innovation.

TSBF-CIAT's strategy will emphasize developing and extending technologies that support sustainable intensification of cropping systems, especially in the dry and moist savanna, hillside, and forest and forest margin agro-ecological zones (AEZs) in Africa and Latin America. In these AEZs, economic poverty, population growth and a rising demand for food are driving expansion of cropped area into increasingly marginal lands and/or remnant forest zones. Under these circumstances, sustainable intensification of agriculture on already cultivated land represents the most promising solution to achieving food security and protecting against natural resource degradation, the ultimate goals of TSBF-CIAT's work.

As a relatively small research institute, it is important that TSBF-CIAT position itself appropriately on the research-development continuum. TSBF-CIAT's primary role and comparative advantage is in conducting international public goods research on ISFM in farming systems where soil degradation undermines local livelihoods and market opportunities. However, while TSBF-CIAT will focus primarily on strategic research, it is also ready to support technology dissemination and development activities with partners via regional networks and global projects.

TSBF-CIAT will continue research on below-ground biodiversity as a means of beneficially managing soil biology, through the GEF-UNEP funded global project on below-ground biodiversity (BGBD).

Much of the applied research and dissemination of findings, as well as NARSs capacity building, will be done via the Institute's two partner networks-the African Network for Soil Biology and Fertility (AfNet), and the Latin American Consortium on Integrated Soil Management (known by its Spanish acronym, MIS). TSBF-CIAT also collaborates with the South Asian Regional Network (SARNet) on soil fertility research in that region.

By 2010, significant progress will have been made towards generating the following outputs:

  • biophysical and socioeconomic processes understood, principles and concepts developed for protecting and improving the health and fertility of soils and people's livelihoods;
  • sustainable soil, water, and nutrient management practices developed and tested by applying and integrating knowledge of biophysical and socioeconomic processes;
  • improved rural livelihoods through profitable, diverse and intensive, sustainable agricultural production systems;
  • sustainable land management practices developed for social profitability, with special emphasis on reversing land degradation; and
  • partnerships developed and capacity enhanced among all stakeholders for improving the health and fertility of soils.

To carry out the work envisioned under the new strategy, the following staff positions will be called for:

Agrobiophysical scientists: These include specialists in ISFM, soil biota management, soil and water conservation, ecosystem services, microbiology, and plant nutrition and physiology.

Social scientists (including agricultural economics): This staff category will be strengthened to permit greater emphasis on the socio-economic aspects of the new research paradigm.

Coordination: This includes the Institute Director, coordinators of the AfNet and MIS networks, and the coordinator of the GEF-UNEP Below Ground Biodiversity Project.

The estimated funding required for TSBF-CIAT's work is approximately US$5 million per year, for a total budget of about $30 million over the projected 6-year period.



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