Claim · model-written summary
A nitrogen dressing after midwinter defoliation failed to increase the oat regrowth rate until early spring.
- Taxon
- oats
Avena sativat0 - Treatment
- A dressing of nitrogen after a midwinter defoliatione2
- Outcome
- regrowth ratee2
- Direction
- failed to increasee2
- Qualifier
- until early springe2
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Response of oats to nitrogen and defoliation”
e2“A dressing of nitrogen after a midwinter defoliation failed to increase the regrowth rate of the crop until early spring”
Title
Response of oats to nitrogen and defoliation
LJ Cook; JV Lovett Australian Journal of Experimental Agriculture and Animal Husbandry 1974. doi:10.1071/ea9740373
Other claims from this paper (15)
- Intervention effect Nitrogen increased oat tillering early in growth in a field crop.
- Intervention effect Nitrogen slowed the rate of decline in oat tiller density in spring.
- Intervention effect Defoliation severity had little effect on the oat regrowth rate.
- Mechanism Subsequent differences in oat yield are due largely to differences in residual dry matter.
- Intervention effect Defoliation stopped oat root growth almost immediately in glasshouse experiments.
- Intervention effect Oat roots did not recommence active growth for approximately two weeks after defoliation.
- Intervention effect Oat roots generally maintained their dry weight during the defoliation recovery period.
- Intervention effect Leaf sheath dry weight declined for seven days after defoliation.
- Intervention effect Leaf sheaths recovered their pre-defoliation weight after a further three days.
- Intervention effect The growth rate of the leaf laminae was apparently unaffected by defoliation.
- Intervention effect Plants with high nitrogen availability recovered faster after defoliation.
- Association The more severe the defoliation, the longer oat plants took to recover.
- Intervention effect Once active growth recommenced, oat growth rates did not differ between plants defoliated to different degrees.
- Association Prevailing climatic conditions influenced the time oat plants took to recommence active growth.
- Intervention effect A second defoliation before leaf sheaths regained the weight lost after an earlier defoliation reduced subsequent oat regrowth.