Yield Gap Analysis: Implications for Research and Policy

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What do these have in common? • Ensuring global food security in face of climate change • Land use and indirect land use change – Impact of climate change on agriculture and vica versa • Competition between food and biofuel • Conservation of natural ecosystems and biodiversity EACH DEPENDS ON RATE OF GAIN IN CROP YIELDS ON EXISTING FARM LAND
• Will business as usual meet projected global food demand in 2050? � Global area for cereal crops declining �48% increase in cereal production needed by 2050 (40 yr) = 1.2% yr -1 of current average yield, or….. �1% annual exponential growth rate • If business as usual won’t do it, what is needed to change course?
Page 1: Yield Gap Analysis: Implications fo
Page 5 and 6: Urban-industrial expansion onto pri
Page 7 and 8: Global Average Maize Yield (kg ha -
Page 9 and 10: Decreasing water supply in all majo
Page 11 and 12: From NCGA website, 8 May 2008: http
Page 13 and 14: Clearing virgin rain forest in Braz
Page 15 and 16: N fertilizer rate (kg N ha -1 ) NUE
Page 17 and 18: Ecological Intensification • How
Page 19 and 20: Crop Sci. 50:1882-1890 (2010) Genet
Page 21 and 22: Yield CO 2 Solar radiation Temperat
Page 23 and 24: Interactions between plant nutrient
Page 25 and 26: Developing a transparent, robust, r
Page 27 and 28: Rank of NOAA weather stations by de
Page 29 and 30: Appropriate crop simulation model (
Page 31 and 32: NOAA weather stations with +20 yrs
Page 33 and 34: Major rice cropping systems in Chin
Page 35 and 36: Wheat area density (green) and refe
Page 37 and 38: How high can average farm yields go
Page 39: Need for Yield Potential--Yield Gap

Yield Gap Analysis: Implications for Research and Policy

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