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Zinc and copper in some soils of Egypt as related to other soil properties
Author(s) -
Awad F.,
Fuda S.,
Arafat S. M.
Publication year - 1985
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19851480302
Subject(s) - calcareous , soil water , zinc , chemistry , copper , alluvial soils , calcareous soils , alluvium , environmental chemistry , soil test , mineralogy , geology , soil science , paleontology , organic chemistry , geomorphology
Abstract Total Zn in alluvial and calcareous soils (average 138 and 70 ppm respectively) was significantly related to their contents of CaCO 3 (negatively), O.M. and clay (positively). Extracting Zn by Na 2 EDTA gave the highest values for both soil types. Total Cu contents varied widely from 26 to 111 ppm in alluvial and from 15 to 30 ppm in calcareous soils. They were negatively correlated with the CaCO 3 contents. The pot experiments showed that EDTA(NH 4 ) 2 CO 3 , Na 2 EDTA and DTPA are reasonable extractants for available Zn from both soil types. DTPA was efficient for all soils investigated, while Na 2 EDTA and EDTA‐citrate were specific for extracting Cu from calcareous soils.