Claim · model-written summary
Apparent recovery of fertilizer N after eight weeks was low for February applications (21%).
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingQualifier
Verbatim
t0“grassland”
e1“Apparent recovery of fertilizer N after eight weeks varied from low in February (21%)”
Title
Paul Murphy; Kay O'Connell; Suzanne L. Watson; et al. Arrow@dit (Dublin Institute of Technology) 2013
Other claims from this paper (8)
- Observation Apparent recovery of fertilizer N after eight weeks was low for March applications (46%).
- Observation Apparent recovery of fertilizer N after eight weeks was high for applications from April to August (69-98%), indicating high N use efficiency can be achieved in Irish grasslands then.
- Mechanism Low recovery in spring suggested that N was applied in excess of immediate crop requirements.
- Observation Most (70%) of the grass yield and N uptake response to fertilizer N occurred in weeks 1 to 4 after application.
- Observation A significant (30%) response of grass yield and N uptake to fertilizer N occurred in weeks 5-8.
- Recommendation There may be scope to decrease N application rates in a grazing rotation.
- Association Apparent recovery of fertilizer N was closely related to soil temperature, increasing by 5.8% per 1 °C increase in temperature.
- Observation Background (non-fertilizer) N supply contributed an average of 164 kg/ha per year (49%) of the N taken up by the fertilized sward.