Claim · model-written summary
Increasing fertiliser rate from 63 to 189 kg N ha −1 had negligible or inconsistent effects on tree growth, fruit yield and size
- Taxon
- apple trees
Malus domesticat0 - Treatment
- Increasing fertiliser application rate from 63 to 189 kg N ha −1e2
- Outcome
- tree growth, fruit yield and sizee2
- Direction
- negligiblee2
- Comparator
- from 63e2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cox's Orange Pippin apple trees”
e2“Increasing fertiliser application rate from 63 to 189 kg N ha −1 had either negligible or inconsistent effects on tree growth, fruit yield and size”
Title
Neil A Hipps; Martin S Ridout; David Atkinson Journal of the Science of Food and Agriculture 1990. doi:10.1002/jsfa.2740530203
Other claims from this paper (7)
- Intervention effect Irrigated trees had substantially greater girths than trees between narrow and wide bare soil strips four years after planting
- Intervention effect Trees kept completely bare by herbicide had substantially greater girths than trees between narrow and wide bare soil strips
- Intervention effect After 16 years the girths of irrigated trees were much greater than those of trees in bare soil
- Intervention effect Trees in bare soil had a much greater cumulative fruit yield over 12 cropping years than trees in the narrow bare-soil strip system
- Intervention effect Irrigated trees had a much greater cumulative fruit yield over 12 cropping years than trees in the narrow bare-soil strip system
- Mechanism Water appears to be a more limiting factor than nitrogen supply for tree growth and yield in this orchard
- Recommendation Irrigation is an alternative to herbicide management for increasing tree growth and fruit yield