Claim · model-written summary
The critical young-leaf nitrogen-to-sulfur ratio in lupins was 22.
LupinusNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the critical nitrogen (N) to S ratio in young leaves (22)”
t0“lupins”
Title
Assessing sulfur status in lupins and wheat
AD Robson; LD Osborne; K Snowball; et al. Australian Journal of Experimental Agriculture 1995. doi:10.1071/ea9950079
Other claims from this paper (17)
- Intervention effect Shoot growth and grain yield rose as sulfur supply increased in lupin and wheat.
- Observation Both species reached maximum grain yield at 60 mg S/pot.
- Association Without sulfur, wheat achieved a lower percentage of maximum yield than lupin.
- Intervention effect Shoot-part sulfur concentrations rose with sulfur supply in wheat and lupins.
- Association Wheat sulfur concentration fell as plants aged.
- Observation Old wheat leaves had higher sulfur concentration than youngest leaves at all sulfur rates.
- Association Lupin stem sulfur accumulated with adequate supply but decreased with deficiency and age.
- Association Sulfur concentrations in other lupin parts generally did not vary with age.
- Observation Youngest open lupin leaves had higher sulfur concentration than old leaves.
- Observation Critical sulfur concentration in young lupin leaves was 0.28% and appeared maturity-independent.
- Observation Critical lupin stem sulfur concentration was 0.07%.
- Observation Critical lupin whole-shoot sulfur concentration was 0.15%.
- Association Wheat young-leaf critical sulfur concentration varied sharply with plant age across 0.14-0.31% S.
- Association Wheat young-leaf critical nitrogen-to-sulfur ratio varied sharply with age across 9-19.
- Observation Sulfur concentrations were higher in Dowerin than Geraldton lupins and wheat.
- Observation Lupin crops from both regions and Dowerin wheat had adequate sulfur.
- Observation At Geraldton, 36% of sampled wheat was sulfur deficient or marginal.