1. Analysis of Trade-Offs in Agricultural Systems

2. NUANCES - Nutrient Use in ANimal and
Cropping systems – Efficiency and Scales
A framework for analysis of trade-offs in African smallholder
farming systems

4. NE-DEED research method
Giller et al. (2008)

5. Trade-offs – and synergies?
• Resource scarcity – and resource use efficiencies
• Time scale – productivity vs. sustainability
• Spatial scale and hierarchical level
– Field, farm, farming system, terroir, landscape, watershed, region,
country, globe
– Physical/geographical vs. political levels
• Claims – from global to local
• Win-win? – win-lose – or lose-lose scenarios
• Power – whose voice, whose power
• Methods and approaches
• Key questions and hypotheses

6. Jevon’s Paradox
…increases in the efficiency with
which a resource is used lead to
faster depletion of that resource…
Jevons, 1865

7. Rules of engagement
• Simple, plain language
• Short questions – short answers
• Open and vigorous discussion – please frame criticism
and comment positively