AGRICULTURAL SCIENCES Correction for “High-yield maize with large net energy yield and small global warming intensity,” by Patricio Grassini and Kenneth G. Cassman, which appeared in issue 4, January 24, 2012, of Proc Natl Acad Sci USA (109:1074–1079; first published January 9, 2012; 10.1073/pnas.1116364109).
The authors note that a reference to an article by De Oliveira et al. was omitted. The complete reference appears below.
As a result of this omission, Fig. 3 appeared incorrectly. The corrected figure and its legend appear below. These errors do not affect the conclusions of the article.
Fig. 3.
Maize grain yield plotted against fossil-fuel energy inputs (A) and GWP (B). Lines indicate average 3-y median (solid line) and fifth and 95th percentiles (dashed lines) for net NER and GWPi calculated for irrigated maize in Tri-Basin NRD. Published data for other US maize systems are shown for comparison (open symbols; Table S1). (C) Relationship between GWPi and net energy yield for irrigated maize in Tri-Basin NRD.
References
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