“the level of estimation of resistance is different between two methods compared, and that there are upper and lower limits of measurable range in all the methods.”
methods must be evaluated for each series of soilse6
Verbatim
e6
“This clearly indicates that methods must be evaluated for each series of soils to be compared”
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”
“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”
e5
“Multiple regression analysis of the data showed that there were strong and different interactions between all methods investigated and soil properties, particularly soil pH, organic matter content, extractable iron, C/P and C/N”
“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”
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.
varying from r = -0.079 for the Truog method to -0.518 for the Olsen methode2
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”
e2
“They were negative for all the extraction procedures, varying from r = -0.079 for the Truog method to -0.518 for the Olsen method”
“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”
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Oryza sativae1.jpg?width=60){kind=small}
Urtica dioica