Dissolved organic carbon affects soil microbial activity and nitrogen dynamics in a Mexican tropical deciduous forest

2007 ◽  
Vol 295 (1-2) ◽  
pp. 265-277 ◽  
Author(s):  
Noé Manuel Montaño ◽  
Felipe García-Oliva ◽  
Víctor J. Jaramillo
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Microbial Activity ◽  
Deciduous Forest ◽  
Soil Microbial Activity ◽  
Nitrogen Dynamics ◽  
Tropical Deciduous Forest ◽  
Soil Microbial

Effects of treated wastewater irrigation on the dissolved and soil organic carbon in Israeli soils

2008 ◽  
Vol 57 (5) ◽  
pp. 727-733 ◽  
Author(s):  
E. Jueschke ◽  
B. Marschner ◽  
J. Tarchitzky ◽  
Y. Chen
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Microbial Activity ◽  
Water Source ◽  
Soil Microbial Activity ◽  
Biological Properties ◽  
Treated Wastewater ◽  
Worst Case ◽  
Soil Microbial ◽  
Irrigation Period

In many arid and semi-arid regions, the demand for drinking water and other domestic uses is constantly growing due to demographic growth and increasing standard of living. Therefore, less freshwater is available for agricultural irrigation and new water sources are needed. Treated wastewater (TWW) already serves as an important water source in Israel since more than 40 years and its usage will further be extended. Related to its high loads with nutrients, salts and organic materials its use as irrigation water can have major effects on the soil physical, chemical and biological properties, in the worst case leading to soil degradation. Additional organic matter reaches the soil with the effluent water and soil microbial activity is stimulated. Soil organic carbon (SOC) seems to accumulate in the topsoil and tends to decrease after long-term irrigation with secondary TWW in the subsoil. The amount of dissolved organic carbon increased and the aromaticity of the organic compounds in the soil percolates decreased over the irrigation period. Priming effects, occurring after stimulation of microbial activity by the addition of easily degradable substances, could be found in the soils and were stronger for subsoil (1 m depth).

Effect of Three Fungicides on Soil Microbial Activity and Nitrogen Dynamics

2005 ◽  
Vol 8 (6) ◽  
pp. 805-809 ◽  
Author(s):  
Refik Uyanoz . ◽  
Ummuhan Cetin . ◽  
Emel Karaarslan .
Keyword(s):  
Microbial Activity ◽  
Soil Microbial Activity ◽  
Nitrogen Dynamics ◽  
Soil Microbial
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