Evidence of slowing yield growth – the example of Swiss cereal yields

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Yield Trends Are Insufficient to Double Global Crop Production by 2050 (2013, background): “Many of these areas are in top crop producing nations, having rising population, increasing affluence, or some combination of these factors [3,5,19,21–23].”
Irrigation as adaptation strategy to climate change—a biophysical and economic appraisal for Swiss maize production (2011, background): “Accordingly, technological developments (Ewert et al. 2005) and the evolution of agri-environmental policies ( Finger 2008, 2009 ) might also far outweigh climate change induced effects on crop production.”
A Meta Analysis on Farm-Level Costs and Benefits of GM Crops (2011, unknown): “Increases over time in maize yields were expected, at least for most of the developed world [3,37].”
A reassessment of global bioenergy potential in 2050 (2015, background): “…in t ha 1 yr 1 has been slowing as we have already picked the low-hanging fruit of yield increase (Kucharik & Ramankutty, 2005; Brisson et al., 2010; Finger, 2010; Lin & Huybers, 2012) – we have exhausted conventional breeding techniques and have saturated soils with fertilizer in the developed…”