Activity and thermodynamic parameters of urease in soils amended with organic residues
Other Title(s)
فعالية إنزيم اليوريز و ثوابته الثرموديناميكية في الترب المعاملة بالمخلفات العضوية
Joint Authors
al-Ansari, Abd al-Mahdi Salih
Abd al-Karim, Muhammad Abd Allah
Kazim, Suhaylah Jawad
Source
The Iraqi Journal of Agricultural Science
Issue
Vol. 50, Issue 3 (30 Jun. 2019), pp.783-792, 10 p.
Publisher
University of Baghdad College of Agriculture
Publication Date
2019-06-30
Country of Publication
Iraq
No. of Pages
10
Main Subjects
Topics
Abstract EN
An experiment was conducted to study the thermodynamic parameters (Q10, Ea, ∆Ha, ∆Sa and ∆Ga) of urease in loamy sand and silty clay soils treated with different sources of organic residues (cow residue, alfalfa leaves, wheat straw and poultry residue).
Residues were mixed with soil at rate of 2%.
The amended soils were incubated at 30°C for 30 days to undergo biochemical, chemical and physico-chemical reaction.
Amended soils were incubated at 10, 20, 30, 40, 50, 60, 70 and 80°C.
Urease activity was assayed and thermodynamic parameters were calculated.
Results indicated that urease activity of amended soil was higher than that of control soils at various temperatures of incubation.
Urease activity increased by increasing temperature of incubation from 10 to 40°C.
Q10, Ea, ∆Ha, and ∆Sa values of silty clay soil were in the order of : poultry manure > cow manure > alfalfa residue > wheat residue > control soil.
However, in loamy sand soil the order was cow manure > alfalfa residue > wheat residue > control > poultry manure.
Order of ∆Ga was control > wheat residue > alfafa residue > cow manure > poultry manure at both soils.
Except at poultry manure, all thermodynamic parameters values were higher in loamy sand soil as compared with their values in silty clay soil.
American Psychological Association (APA)
al-Ansari, Abd al-Mahdi Salih& Abd al-Karim, Muhammad Abd Allah& Kazim, Suhaylah Jawad. 2019. Activity and thermodynamic parameters of urease in soils amended with organic residues. The Iraqi Journal of Agricultural Science،Vol. 50, no. 3, pp.783-792.
https://search.emarefa.net/detail/BIM-892929
Modern Language Association (MLA)
al-Ansari, Abd al-Mahdi Salih…[et al.]. Activity and thermodynamic parameters of urease in soils amended with organic residues. The Iraqi Journal of Agricultural Science Vol. 50, no. 3 (2019), pp.783-792.
https://search.emarefa.net/detail/BIM-892929
American Medical Association (AMA)
al-Ansari, Abd al-Mahdi Salih& Abd al-Karim, Muhammad Abd Allah& Kazim, Suhaylah Jawad. Activity and thermodynamic parameters of urease in soils amended with organic residues. The Iraqi Journal of Agricultural Science. 2019. Vol. 50, no. 3, pp.783-792.
https://search.emarefa.net/detail/BIM-892929
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 790-792
Record ID
BIM-892929