Are the differences among samples from agricultural trials analyzed by routine procedures experimental or only analytical?
Articolo
Data di Pubblicazione:
1996
Citazione:
Are the differences among samples from agricultural trials analyzed by routine procedures experimental or only analytical? / G. Stringari, F. Moller, A. Ceschini, O. Failla. - In: COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS. - ISSN 0010-3624. - 27:5-8(1996), pp. 1403-1416. ((Intervento presentato al convegno International Symposium on Soil Testing and Plant Analysis : Quality of Soil and Plant Analysis, in View of Sustainable Agriculture and the Environment tenutosi a Wageningen nel 1995.
Abstract:
Many experimental researches in the agricultural field involve chemical analyses. For a correct statistical data processing, it should be important to discriminate between the variability induced by the analytical method and by other sources of variation (experimental treatments and other causes of systematic variability). The object of the present communication is to present a simple and economical method for the evaluation of the analytical variability which does not require to replicate the analysis of each sample. The analytical method used in this study was the plant tissue determination of phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), manganese (Mn), boron (B), copper (Cu), zinc (Zn), and sulfur (S) by plasma emission spectrometry (ICP). The repeatability and the reproducibility of the method for each element was obtained by analysing two times per day a reference sample. The use of these parameters in the statistical processing of the analytical data from experimental trials for a correct result interpretation are discussed.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
G. Stringari, F. Moller, A. Ceschini, O. Failla
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