Claim · model-written summary
The equations applied to data from other regions suggest that divergence from the estimated functional form may be greater under increasingly different climatic conditions.
- Taxon
- apple
Malus domesticae1 - Outcome
- divergence from the estimated functional forme6
- Direction
- greatere6
- Setting
- other regionse6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A number of mass—diameter equations were compared for their potential use in indirect measurement of fruit masses of `Royal Gala' apple ( Malus × domestica )”
e6“Application of these two equations to data from other regions suggested that divergence from the estimated functional form may in fact be greater under increasingly different climatic conditions”
Title
H.N. De Silva; D.S. Tustin; W.M. Cashmore; et al. HortScience 1997. doi:10.21273/hortsci.32.7.1169
Other claims from this paper (7)
- Method / resource Two piecewise equations, a three-parameter power function and a five-parameter spline exponential function, provided good fits to Royal Gala apple fruit mass–diameter data.
- Method / resource For both equations the estimated mean bias on individual fruit predictions was within 5% of predicted mass over the two validating data sets.
- Method / resource A sample of 20 fruit gave standard errors within 2.5% of mean predicted mass.
- Observation There was evidence of a seasonal difference in the estimated bias of the equations.
- Observation Seasonal differences in fruit shape could not be confirmed as the cause of the bias variation.
- Recommendation Further investigation is needed before the proposed equations are applied across climatically different regions.
- Method / resource The precisions are adequate for industry requirements for monitoring fruit mass through the growing season.