Claim · model-written summary
Yield response factor averaged 1.65 in 2009.
Zea maysNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Maize ETa, LAI, biomass production, grain yield, and HI were significantly affected by the irrigation regimes”
e2“Yield response factors varied between treatments and with year for the same treatment and averaged 1.65 in 2009 and 2.85 in 2010, with a two-year average of 1.82”
Title
Koffi Djaman; Suat Irmak; William R. Rathje; et al. Transactions of the ASABE 2013. doi:10.13031/2013.42676
Other claims from this paper (17)
- Intervention effect Maize ETa, LAI and biomass production were significantly affected by the irrigation regimes.
- Intervention effect Maize grain yield and HI were significantly affected by the irrigation regimes.
- Observation Maize yields in 2009 varied from 9.05 Mg ha-1 under the rainfed treatment to 15.5 Mg ha-1 under FIT.
- Observation Maize yields in 2010 varied from 11.7 to 15.5 Mg ha-1 across the respective treatments.
- Observation Harvest index ranged from 0.49 under rainfed to 0.57 under FIT, with an all-treatment average of 0.54.
- Observation Maize ETa ranged from 481 mm under rainfed to 620 mm under FIT in 2009.
- Observation Maize ETa ranged from 579 mm to 634 mm under the same treatments in 2010.
- Association The yield versus ETa relationship had R2 of 0.94 in 2009.
- Association The yield versus ETa relationship had R2 of 0.97 in 2010.
- Mechanism Yield-irrigation and yield-ETa relationships varied between the two years, attributed to weather variability.
- Recommendation Accounting for weather variability in the slopes of crop yield production functions is important.
- Observation Maize produced 1.2 Mg ha-1 of grain yield per 25.4 mm of ETa beyond 280 mm in 2009.
- Observation Maize produced 1.7 Mg ha-1 of grain yield per 25.4 mm of ETa beyond 403 mm in 2010.
- Observation Yield response factor averaged 2.85 in 2010.
- Observation Yield response factor averaged 1.82 over the two years.
- Intervention effect Grain yield did not differ significantly between 75% FIT and 100% FIT.
- Intervention effect The 75% FIT and 60% FIT treatments were comparable to fully irrigated maize in crop water productivity and are viable practices.