Claim · model-written summary
Yearly variation in dry matter yield response was partly attributed to clover amount and conversion of absorbed nitrogen to dry matter.
- Taxon
- perennial ryegrass/white clover swardt0
- Outcome
- variatione0
- Qualifier
- differences in the amount of clover present and partly to differences in the extent to which N taken up by the grass was used for the synthesis of dry‐mattere0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValue
Verbatim
e0“This variation was due partly to differences in the amount of clover present and partly to differences in the extent to which N taken up by the grass was used for the synthesis of dry‐matter”
t0“PERENNIAL RYEGRASS / WHITE CLOVER SWARD”
Title
D. W. Cowling Grass and Forage Science 1966. doi:10.1111/j.1365-2494.1966.tb00471.x
Other claims from this paper (12)
- Intervention effect Ammonium nitrate, ammonium sulphate and urea produced similar yield increases in the sward.
- Intervention effect Urea was slightly inferior for yield in one year with high rainfall after fertilization.
- Intervention effect Gas liquor produced variable responses over three years.
- Intervention effect Nitroform was generally less effective than the other fertilizer forms.
- Observation Grass nitrogen uptake from three fertilizer forms varied little across years.
- Observation Soil nitrogen uptake by the untreated control varied between years.
- Observation Dry matter yield response to nitrogen varied by year.
- Intervention effect Fertilizer application did not greatly reduce spring white clover content.
- Intervention effect Fertilizer forms had no consistent difference in their effects on clover.
- Intervention effect Clover content was reduced in summer after fertilizer application.
- Intervention effect Clover content showed no reduction in autumn after fertilizer application.
- Recommendation More than three to six replications may be needed for precise quantitative fertilizer comparisons.