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Reactions of pyrophosphate in soils and its effect on zinc sorption at various pH levels
Year:
1983
Source of publication :
Soil Science
Authors :
Asher, L. E.
;
.
Bar-Yosef, Bnayahu
;
.
Volume :
136
Co-Authors:
Bar-Yosef, B., Division of Soil Chemistry and Plant Nutrition, The Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Asher, L.E., Division of Soil Chemistry and Plant Nutrition, The Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Facilitators :
From page:
82
To page:
88
(
Total pages:
7
)
Abstract:
Pyrophosphate (PP), is a potential sequestering agent for zinc (Zn) in soils. The mechanism and efficiency of PP complexation with Zn in a calcareous (Daphna) and pH-neutral (Yiron) soil were investigated and compared with chelation by EDTA and DTPA. In the pH range 7 to 10, pH was found to have a small effect on both calcium (Ca) and PP concentrations (CCaand CPP), whereas below pH 7, CCaand Cppwere strongly dependent on pH in Daphna soil alone. In both soils PP caused an increase in Zn concentration (CZn) to as high as 400 μM but only above a threshold initial CPPof ca. 3 mM PP and pH > 8. At a lower initial Cpp, e.g., 1 mM and pH > 8, CZnwas 2 μM, and in the presence of EDTA and DTPA of the same initial concentration, CZnwas 116 and 120 μM, respectively. We suggest that applying solutions containing PP and Zn together to soils is preferable to applying Zn in an initial dressing followed by fertigation with PP. © 1983 The Williams & Wilkins Co.
Note:
Related Files :
plant nutrition
soil
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More details
DOI :
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
18982
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:25
Scientific Publication
Reactions of pyrophosphate in soils and its effect on zinc sorption at various pH levels
136
Bar-Yosef, B., Division of Soil Chemistry and Plant Nutrition, The Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Asher, L.E., Division of Soil Chemistry and Plant Nutrition, The Institute of Soils and Water, Agricultural Research Organization, The Volcani Center, Bet Dagan, Israel
Reactions of pyrophosphate in soils and its effect on zinc sorption at various pH levels
Pyrophosphate (PP), is a potential sequestering agent for zinc (Zn) in soils. The mechanism and efficiency of PP complexation with Zn in a calcareous (Daphna) and pH-neutral (Yiron) soil were investigated and compared with chelation by EDTA and DTPA. In the pH range 7 to 10, pH was found to have a small effect on both calcium (Ca) and PP concentrations (CCaand CPP), whereas below pH 7, CCaand Cppwere strongly dependent on pH in Daphna soil alone. In both soils PP caused an increase in Zn concentration (CZn) to as high as 400 μM but only above a threshold initial CPPof ca. 3 mM PP and pH > 8. At a lower initial Cpp, e.g., 1 mM and pH > 8, CZnwas 2 μM, and in the presence of EDTA and DTPA of the same initial concentration, CZnwas 116 and 120 μM, respectively. We suggest that applying solutions containing PP and Zn together to soils is preferable to applying Zn in an initial dressing followed by fertigation with PP. © 1983 The Williams & Wilkins Co.
Scientific Publication
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