Claim · model-written summary
Phosphate-extractable sulfate was the most effective soil test but explained less than 50% of Siratro relative-yield variation.
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Verbatim
e0“Phosphate-extractable sulfate was the most effective soil test but irrespective of sampling depth, it accounted for less than 50% of the variation in Siratro relative yields.”
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.
- Association Siratro relative yield correlated significantly with soil sulfate and plant sulfur concentrations.
- 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 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.