Diversified and sustainable agro‐ecosystems –
efficient management of resources and soil
fertility
Erik Karltun, Ingrid Öb...
Cultivation period (years)
0 10 20 30 40 50 60
TotalN(gkg-1
)
0
2
4
6
8
10
12
0
2
4
6
8
10
12
y = 4 + 4.89e-0.18x
r = 0.98...
Some major research questions addressedScientific
• How do trees in the landscape affect watershed
hydrology?
• How do tre...
Some quantitative outputScientific
Category Number
Peer-reviewed scientific papers 5
Peer-reviewed book chapters 2
Manuscr...
The major reason for SLU to engage in research in
Africa is not the research itself but to assist building
the capacity to...
The budget support for a PhD thesis provided by Addis
Ababa University is 6000 SEK
Partners
Some students supportedPartners
Tree-maize interaction at field scale
John Nyaga, PhD student, JKUAT/ICRAF
Partners
Workneh Bedada, PhD student, Wondo Genet/SLU
Compost-fertilizer interactions
Partners
Partners
Local impact yes – but how do we scale it up?
A university is not primarily a development organization
End users
• Capacity building – academic and societal
• Strong interest among students
• Part of a globalized world – new perspectiv...
Thank you!
UD
Co-funders
Partners
Farmers
SLU Global
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Synthesis of Agroecosystems session at SLU Global Food Security Research Symposium

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Synthesis of Agroecosystems session at SLU Global Food Security Research Symposium

  1. 1. Diversified and sustainable agro‐ecosystems – efficient management of resources and soil fertility Erik Karltun, Ingrid Öborn, Kristina Röing de Nowina, Gert Nyberg IMPACT SYNTHESIS
  2. 2. Cultivation period (years) 0 10 20 30 40 50 60 TotalN(gkg-1 ) 0 2 4 6 8 10 12 0 2 4 6 8 10 12 y = 4 + 4.89e-0.18x r = 0.98** δ15 N δ 15 N(‰) Total N Scientific Partners End users SLU
  3. 3. Some major research questions addressedScientific • How do trees in the landscape affect watershed hydrology? • How do trees and crops compete for water and nutrients in agro-forestry systems? • Can integration of trees and crops, and often livestock, contribute to enhance agricultural productivity and resource utilization, and contribute to improved living conditions for smallholders? • Can soil fertiliy and crop management reduce Striga infestation? • What factors may determine farmer adoption of new technologies? • Can compost or charcoal be a complement to fertilizer to enhance nutrient use efficiency?
  4. 4. Some quantitative outputScientific Category Number Peer-reviewed scientific papers 5 Peer-reviewed book chapters 2 Manuscripts under preparation 14 MSc and BSc theses 16 PhD students 4 Conference presentations and posters 25 Organized scientific conferences and workshops 3 End-user directed activities 6 Guest researchers visit to SLU 2 Post-doc 1 Directly involved senior researchers (SLU/Partners) 8/21 Directly involved students (Sweden/Partners) 17/7 Partner universities 4 Partner institutes 4 Partner organizations incl. NGOs 2
  5. 5. The major reason for SLU to engage in research in Africa is not the research itself but to assist building the capacity to do research… …but by doing research together we build capacity: - academic - human - technical - institutional Partners
  6. 6. The budget support for a PhD thesis provided by Addis Ababa University is 6000 SEK Partners
  7. 7. Some students supportedPartners
  8. 8. Tree-maize interaction at field scale John Nyaga, PhD student, JKUAT/ICRAF Partners
  9. 9. Workneh Bedada, PhD student, Wondo Genet/SLU Compost-fertilizer interactions Partners
  10. 10. Partners
  11. 11. Local impact yes – but how do we scale it up? A university is not primarily a development organization End users
  12. 12. • Capacity building – academic and societal • Strong interest among students • Part of a globalized world – new perspectives SLU
  13. 13. Thank you! UD Co-funders Partners Farmers SLU Global
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