Abstract
AbstractYield gaps, here defined as the difference between actual and attainable yields, provide a framework for assessing opportunities to increase agricultural productivity. Previous global assessments, centred on a single year, were unable to identify temporal variation. Here we provide a spatially and temporally comprehensive analysis of yield gaps for ten major crops from 1975 to 2010. Yield gaps have widened steadily over most areas for the eight annual crops and remained static for sugar cane and oil palm. We developed a three-category typology to differentiate regions of ‘steady growth’ in actual and attainable yields, ‘stalled floor’ where yield is stagnated and ‘ceiling pressure’ where yield gaps are closing. Over 60% of maize area is experiencing ‘steady growth’, in contrast to ∼12% for rice. Rice and wheat have 84% and 56% of area, respectively, experiencing ‘ceiling pressure’. We show that ‘ceiling pressure’ correlates with subsequent yield stagnation, signalling risks for multiple countries currently realizing gains from yield growth.
Funder
UM | Institute on the Environment, University of Minnesota
United States Agency for International Development
Institute on the Environment The World Bank
The World Bank University of Minnesota Institute on the Environment
National Science Foundation
Minnesota Agricultural Experiment Station
Publisher
Springer Science and Business Media LLC
Subject
Agronomy and Crop Science,Animal Science and Zoology,Food Science
Reference72 articles.
1. Evenson, R. E. et al. Assessing the impact of the green revolution, 1960 to 2000. Science 300, 758–762 (2003).
2. Foley, J. A. et al. Solutions for a cultivated planet. Nature 478, 337–342 (2011).
3. Alexandratos, N. & Bruinsma, J. World Agriculture Towards 2030/2050: the 2012 Revision (FAO, 2012).
4. Springmann, M. et al. Options for keeping the food system within environmental limits. Nature 519–525 (2018).
5. West, P. C. et al. Leverage points for improving global food security and the environment. Science 345, 325–328 (2014).
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