Claim · model-written summary
Varietal selection and nitrogen fertilization were the most important factors for closing yield gaps.
- Taxon
- maize and wheat
Triticum aestivum
Zea mayse0 - Treatment
- Varietal selection and nitrogen (N) fertilizatione1
- Outcome
- yield gap closuree1
- Direction
- increaseinferrede1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we explored and prioritized promising intensification options for rainfed maize and wheat”
e1“Varietal selection and nitrogen (N) fertilization were the most important factors contributing to yield gap closure”
Title
Mezegebu Getnet; Katrien Descheemaeker; Martin K. van Ittersum; et al. Field Crops Research 2022. doi:10.1016/j.fcr.2022.108442
Other claims from this paper (14)
- Observation Actual productivity of most cereals in the Central Rift Valley of Ethiopia is less than 3 t ha−1.
- Intervention effect Nitrogen application rates up to 250 kg−1 maximized simulated yields.
- Intervention effect Lower N rates gave the maximum simulated gross margin, with a small yield reduction compared to the maximum.
- Intervention effect Lower N rates gave the maximum simulated water use efficiency.
- Association Intensification was associated with increased absolute water use through transpiration.
- Association Intensification decreased the water use per kg of product.
- Intervention effect Location-specific N rates giving at least 80% of water-limited potential yield resulted in high water use efficiencies.
- Intervention effect The same location-specific N rates gave favorable cost-benefit ratios.
- Intervention effect Climate change was projected to lower crop yield as maturity advanced.
- Intervention effect Climate change was projected to decrease drainage.
- Intervention effect Climate change was projected to increase soil evaporation.
- Intervention effect Climate change reduced wheat crop yield by 15–25%.
- Intervention effect Climate change reduced maize crop yield by 2–30%.
- Recommendation The locally-calibrated APSIM model could be used to derive lessons and sustainable intensification pathways for maize and wheat.