Claim · model-written summary
Final irrigation applied 16 days after mid-flowering increased total oil yield by 48% in sunflower.
- Taxon
- sunflowers
Helianthuse1 - Treatment
- final irrigation was applied 16 days after mid-floweringe6
- Outcome
- total oil yielde6
- Direction
- increasede6
- Value
- 48 per cente6
- Qualifier
- all treatments were irrigated at a high frequencye6
- Comparator
- at mid-floweringe6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“sunflowers (cv. VNIIMK 6540)”
e6“In the second experiment, in which all treatments were irrigated at a high frequency, seed yield was increased by 30 per cent and total oil yield by 48 per cent when final irrigation was applied 16 days after mid-flowering, rather than at mid-flowering”
Title
CL Browne Australian Journal of Experimental Agriculture and Animal Husbandry 1977. doi:10.1071/ea9770482
Other claims from this paper (8)
- Intervention effect Final irrigation applied 22 days after mid-flowering increased sunflower seed yield by 19% compared with irrigation at mid-flowering.
- Mechanism The higher sunflower yield under late final irrigation resulted principally from more harvestable seeds.
- Intervention effect Higher irrigation frequency increased sunflower seed yield by 9%, via increased seed weight.
- Observation Estimated total consumptive water use across sunflower irrigation treatments ranged from 546 to 677 mm.
- Association Sunflower seed yield was related to water use by a regression with r = 0.77.
- Intervention effect Final irrigation applied 16 days after mid-flowering increased sunflower seed yield by 30% in the second experiment.
- Intervention effect Later final irrigation increased sunflower seed weight and seed number.
- Intervention effect Extending the irrigation season to physiological maturity gave no further sunflower yield improvement.