Claim · model-written summary
Siratro relative yield correlated significantly with soil sulfate and plant sulfur concentrations.
- Taxon
- Siratroe0
- Compound
- soil sulfate and plant sulfur concentrationse0
- Outcome
- Siratro relative yieldse0
Not reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Verbatim
e0“Significant correlations between Siratro relative yields (100 x yield without sulfur/yield with sulfur applied, attenuated at 100 for model fitting) and both soil sulfate and plant sulfur concentrations confirmed the predictive value of these laboratory data.”
Title
Prediction of response to sulfur by established Siratro/grass pastures in south-eastern Queensland
GE Rayment Australian Journal of Experimental Agriculture 1983. doi:10.1071/ea9830280
Other claims from this paper (10)
- Intervention effect Gypsum benefits reached a maximum 32% in Siratro at fewer than 25% of sites.
- Observation At disadvantaged sites, grass yields were more severely depressed than Siratro yields.
- Method / resource Past sulfur history, Siratro proportion and pasture age did not predict yield effects.
- Method / resource Sulfur in whole Siratro tops predicted responsiveness with R2 = 0.65.
- Method / resource Sulfur in diagnostic runner samples predicted Siratro responsiveness with R2 = 0.65.
- Method / resource The critical sulfur concentration for diagnostic samples was 0. 16% S.
- Method / resource The critical sulfur concentration for whole Siratro tops varied from 0.13 to 0. 15% S across models.
- Method / resource Phosphate-extractable sulfate was the most effective soil test but explained less than 50% of Siratro relative-yield variation.
- Method / resource A critical soil phosphate-extractable sulfate range of 3-5 ppm was indicated for Siratro.
- Association Grass and total pasture relative yields did not correlate with the chemical tests.