Claim · model-written summary
The carrier-free isotope dilution method of Talibudeen gave a negative correlation with nettle phosphate uptake, r = -0.676.
- Taxon
- Urtica dioica
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Urtica dioicae1 - Treatment
- carrier-free method of Talibudeene3
- Outcome
- correlation coefficientse3
- Value
- -0.676e3
Verbatim
e1“Correlation coefficients between values produced and phosphate uptake during a twomonth period from 16 soils (pH range 3.85 to 7.85) by Urtica dioica L., a phosphate-sensitive plant, differed markedly”
e3“The isotope dilution methods, with the exception of one, all gave positive correlation coefficients, varying from r = -0.676 for the carrier-free method of Talibudeen to r = 0.798 for a modified Amer carrier method”
Title
Estimation of Readily-Available Phosphate in Some English Lake District Woodland Soils
A. F. Harrison Oikos 1975. doi:10.2307/3543706
Other claims from this paper (5)
- Method / resource The four chemical extraction methods gave negative correlations with nettle phosphate uptake, from -0.079 for the Truog method to -0.518 for the Olsen method.
- Method / resource Most isotope dilution methods gave positive correlations with nettle phosphate uptake, up to r = 0.798.
- Method / resource Isotope dilution results accounted for 86.4 % of the variation in nettle phosphate uptake, against the four extraction methods.
- Observation Soil properties strongly and differently interacted with all methods investigated.
- Recommendation Methods must be evaluated for each series of soils before they are compared.