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Articles

CRITICAL LEVEL OF PHYTOAVAILABLE ZINC IN BIO COMPOST-PEAT SUBSTRATES (REFEREED)

Article number

450_41

Pages

343 – 348

Language

Abstract

The aim of the investigation was to identify a suitable method for the characterization of phytoavailable zinc and to set up a critical value for phytoavailable zinc in compost-peat substrates.
The test plant was a Petunia hybrid.

The extraction with 0.1 M CaCl₂ solution resulted in the closest correlation between extractable Zn and plant Zn content.
The critical level, where chlorosis of the plants occurred, was between 5.4 and 6.0 mg Zn (CaCl₂ soluble) 1^-1 substrate.
Thus, a tolerable level of 5.0 mg Zn (CaCl₂ soluble) 1^-1 substrate is suggested.

Publication

International Symposium Growing Media and Plant Nutrition in Horticulture

Authors

A. S. Bucher, M. K. Schenk

Keywords

Petunia-Hybrids, ornamental plants, compost, heavy metals, phytoavailability, CaCl₂, pH

Full text

https://doi.org/10.17660/ActaHortic.1997.450.41

Online Articles (68)

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