Claim · model-written summary
Chemically estimated soil nutrient supply parameters substantially agreed with yield-fit averages.
- Taxon
- French beans and summer cabbage
Brassica oleracea var. capitata
Phaseolus vulgarise2 - Outcome
- substantial agreemente0
- Comparator
- average values obtained by the entirely different procedure of fitting the model to the yield datae0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“They were in substantial agreement with the average values obtained by the entirely different procedure of fitting the model to the yield data”
e1“Estimates of N 8 were made from chemical analysis of the (NH 4 + NO 3 ) — N of soil samples from the field plots, and P 8 , and K 8 from chemical studies of the adsorption of phosphate and potassium on untreated soil”
e2“field experiments were carried out on French beans and summer cabbage”
Title
A theory for fertilizer response
D. J. Greenwood; J. T. Wood; T. J. Cleaver; et al. The Journal of Agricultural Science 1971. doi:10.1017/s0021859600064595
Other claims from this paper (5)
- Method / resource The fertilizer response model fit yield data very well.
- Observation Fitted parameter values differed between blocks.
- Method / resource Equally good fits could arise from very different parameter values.
- Method / resource Chemical estimates of B N , B P, B K and a N were consistent with model fitting.
- Observation Authors conclude the theory broadly accords with field results despite limitations.