Claim · model-written summary
All freshly applied copper treatments were on the maximum yield plateau because wheat roots accessed enough copper from the original treatments.
- Taxon
- wheat
Triticum aestivume6 - Treatment
- freshly-applied coppere6
- Outcome
- maximum yield plateaue6
- Qualifier
- wheat roots accessed enough copper for grain productione6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Otherwise, all freshly-applied copper treatments were on the maximum yield plateau because wheat roots accessed enough copper for grain production from soil treated with the original copper treatments”
Title
Long-term residual value of copper fertiliser for production of wheat grain
R. F. Brennan Australian Journal of Experimental Agriculture 2006. doi:10.1071/ea04271
Other claims from this paper (9)
- Intervention effect In the first 12 years, large wheat grain yield increases were obtained only to freshly applied copper in the original nil-copper plots.
- Intervention effect In the 16th year, copper responses to freshly applied copper first occurred in the original 0.69 kg copper/ha plots.
- Observation The recommended 1.38 kg copper/ha supplied sufficient copper for grain production for 28 years.
- Intervention effect Grain yield responses to freshly applied copper first occurred at 28 years in the 1.38 kg copper/ha plots.
- Observation Copper removal in grain of each wheat crop accounted for only about 2–3% of the original 1.38 kg copper/kg treatment.
- Intervention effect In years 4–16, the original copper treatments were more effective than freshly applied copper.
- Intervention effect In years 24–32, freshly applied copper was more effective than the original copper treatments.
- Association The residual value of the original copper treatments continued to decrease, owing to slow reaction of the copper with soil.
- Observation The copper concentration in the youngest expanded wheat leaf blades related to 90% of maximum grain yield was about 1.4 mg/kg at the flag leaf stage.