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Zinc sorption behavior in soils with divergent characteristics.

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Title Zinc sorption behavior in soils with divergent characteristics.
Not Available
 
Creator Girija veni, V., Rattan, R.K., Datta, S.P. and Sharma, K.L.
 
Subject Adsorption, Langmuir and Freundlich isotherm, zinc
 
Description Not Available
Adsorption studies are important to determine the retention and release of applied
plant nutrients and the efficiency of fertilization. The present study was conducted
to delineate the zinc (Zn) adsorption behavior of soils with varying characteristics.
In this study, adsorption behavior of Zn was studied at varying Zn concentrations
and temperatures in three different soils collected from the Research Farm of Indian
Agricultural Research Institute (IARI), New Delhi (Inceptisols, Typic Haplustepts), soil
(Inceptisols, Typic Ustocrept) from a farmer’s field in Shamgarh, Karnal, Harayana,
and the Hayathnagar Research Farm of Central Research Institute For Dryland
Agriculture (CRIDA), Hyderabad, (Haplustalf). The results of this study revealed that
the adsorption of Zn as well as differential buffering capacity (DBC) was greater in
Typic Haplustepts of IARI and Typic Ustocrept of Karnal than Haplustalf of CRIDA,
Hyderabad. However, the supply power as well as percentage saturation (% sat.) was
greater in Haplustalf of CRIDA, Hyderabad, than Typic Haplustepts of IARI and Typic
Ustocrept of Karnal The results also revealed that irrespective of the soil types, Zn
adsorption increased with an increase in Zn concentration and increase in temperature
from 20 ◦C to 35 ◦C. When the adsorption data were fitted to isotherms, Langmuir and
Freundlich isotherm fits were excellent, as evidenced by high r2 (0.71 to 0.99) values.
Thermodynamic parameters such as standard free energy ( G) were negative in both
Typic Haplustepts and Typic Ustocrept soils, indicating spontaneous Zn adsorption
reaction, but nonspontaneous reaction was observed in the case of Haplustalf soils..
Interestingly, both standard enthalpy ( H) and standard entropy ( S) were negative in
all the three types of soils studies. The analogy and results of the present study would
be useful in deciding the Zn fertilizer needs for a given soil type.
CSIR, ICAR
 
Date 2021-08-21T04:28:40Z
2021-08-21T04:28:40Z
2014
 
Type Research Paper
 
Identifier Not Available
0010 3624
http://krishi.icar.gov.in/jspui/handle/123456789/58923
 
Language English
 
Relation Not Available;
 
Publisher Taylor & Francis