Claim · model-written summary
Yield gaps are larger in developing countries and close slowly except in Iowa maize and Egypt cereals.
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Yield gaps tend to be larger in developing countries, and seem to be closing only slowly except in the case of maize in Iowa and major cereals in Egypt.”
Title
Can Technology Deliver on the Yield Challenge to 2050?
Fischer, R.A.; Byerlee, Derek R.; Edmeades, Gregory O.; et al. AgEcon Search (University of Minnesota, USA) 2009. doi:10.22004/ag.econ.55481
Other claims from this paper (17)
- Observation Global wheat and rice yield growth has fallen below 1% annually.
- Observation Maize annual yield increase is 1.6%.
- Observation Absolute yield growth in developing countries is falling for rice and wheat.
- Observation Wheat potential yield progress averages 0.5%.
- Observation Wheat yield gap averages 40%, ranging 25–50%.
- Observation Rice potential yield growth is about 0.5%.
- Observation Rice yield gap averages 75%, ranging 15–110%.
- Observation Maize potential yield growth averages around 1%.
- Observation Maize yield gaps range from around 30% in Iowa to over 200% in sub Saharan Africa.
- Recommendation Yield gap closing is a priority for maize in sub Saharan Africa.
- Mechanism Potential yield gain is increasingly linked to biomass and radiation use efficiency.
- Mechanism Water limited potential yield depends on further harvest index increases.
- Observation Heterosis offers yield gain prospects in rice and wheat.
- Observation Existing GM crops often have higher yields through closing yield gaps.
- Method / resource Molecular selection tools show promise for increasing breeding efficiency.
- Observation Agricultural total factor productivity continues to grow.
- Observation Modern input technologies can increase yields and resource use efficiency together.