Claim · model-written summary
Colwell phosphorus in the topsoil was not related to dry matter production at anthesis or to grain yield.
- Taxon
- dryland cereal cropse3
- Compound
- Colwell phosphoruse1
- Outcome
- dry matter production at anthesis or with grain yielde2
- Direction
- not relatede2
- Setting
- topsoil (0–0.15 m)e1
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorValueQualifier
Verbatim
e1“Colwell phosphorus concentration in the topsoil (0–0.15 m) was positively correlated with dry matter production at tillering”
e2“but was not related to dry matter production at anthesis or with grain yield”
e3“High spatial and temporal variability is an inherent feature of dryland cereal crops”
Title
G. K. McDonald Australian Journal of Experimental Agriculture 2006. doi:10.1071/ea04015
Other claims from this paper (9)
- Association Grain yield variation was more closely related to dry matter at maturity and harvest index than to dry matter production at tillering and anthesis.
- Association Soil properties had a stronger relationship with dry matter production and grain yield in 1999, the drier year.
- Association Colwell phosphorus in the topsoil was positively correlated with dry matter production at tillering.
- Association Subsoil pH, extractable boron and electrical conductivity were closely related to one another.
- Association The importance of EC and extractable boron for grain yield variation increased with soil depth.
- Association EC had a greater influence on grain yield variation than the other soil properties.
- Association In a year with above-average rainfall, measured soil variables described very little of the yield variation.
- Association Variability in plant nutrient concentration, plant growth and grain yield was high but lower than that of most soil properties.
- Observation All soil properties except pH showed a high degree of spatial variability.