Claim · model-written summary
N applied at ear emergence gave the maximum effect on single grain weight in winter wheat.
- Taxon
- Winter wheat
Triticum aestivume0 - Treatment
- N was applied at ear emergencee3
- Outcome
- single grain wt.e3
- Direction
- Max.e1
- Comparator
- basal N dosee0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter wheat cv. Caribo (1979) or Arminda and Okapi (1980) was provided with an additional N dressing at different stages between tillering and ear emergence after a basal N dose applied at the onset of tillering”
e1“Max. effects on tiller formation and spikelet initiation were achieved when additional N was supplied at the beginning of tillering; on ear number when N was supplied at the onset of stem elongation”
e3“on single grain wt. when N was applied at ear emergence”
Title
Ear formation and grain yield of winter wheat as affected by time of nitrogen supply.
A. Darwinkel Netherlands Journal of Agricultural Science 1983. doi:10.18174/njas.v31i3.16944
Other claims from this paper (12)
- Intervention effect Additional N supplied at the beginning of tillering gave the maximum effect on tiller formation and spikelet initiation in winter wheat.
- Intervention effect N supplied at the onset of stem elongation gave the maximum effect on ear number in winter wheat.
- Intervention effect N applied during stem elongation until flag leaf emergence gave the maximum effect on fertile spikelet number, grains per fertile spikelet and grains per ear.
- Observation Variations in 1000-grain weight were small in winter wheat.
- Mechanism Grain yield per ear and per unit area was largely determined by grain number in winter wheat.
- Association Main shoots outyielded ear-bearing tillers, because of a higher grain number.
- Mechanism In ear-bearing tillers, grain yield largely depended on grain number.
- Association Grain number was highest in the older tillers.
- Association Grain formation of ear-bearing tillers was more strongly affected by the timing of additional N than that of main shoots.
- Intervention effect Top-dressing N during stem elongation increased grain number of ear-bearing tillers considerably.
- Mechanism The increase in grain number of ear-bearing tillers after top-dressing reflects more fertile spikelets and more grains per fertile spikelet.
- Association The optimal time to apply additional N for grain set shifted to later stages in young late-appeared tillers.