ISHS Acta Horticulturae 342: International Symposium on Horticultural Substrates other than Soil in situ
ANALYSIS OF MACRO- AND TRACE ELEMENTS IN HORTICULTURAL SUBSTRATES BY MEANS OF THE CaCl2/DTPA METHOD |
| Authors: | D. Alt, I. Peters |
| Abstract:
The extraction of horticultural substrates by means of a new method (0,01 M CaCl2 + 0,002 M DTPA; 25 g substrate per 200 ml of extractant) is suggested. Not only macro- and trace elements (except Ca), but also toxic elements as Cd, Pb and Al can be measured in the extract. In pot trials a very close relationship between P content of substrate and growth has been found. In comparison to some other methods the new method shows advantages as far as (a) estimation of P supply, (b) measurement of content of exchangeable cations and (c) measuring many elements in one single extract are concerned. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
