Effect of elevated CO2 on chlorpyriphos degradation and soil microbial activities in tropical rice soil

2016 ◽  
Vol 188 (2) ◽  
Author(s):  
Totan Adak ◽  
Sushmita Munda ◽  
Upendra Kumar ◽  
J. Berliner ◽  
Somnath S. Pokhare ◽  
...  
Keyword(s):  
Elevated Co2 ◽  
Rice Soil ◽  
Microbial Activities ◽  
Soil Microbial

scholarly journals Olive mill wastewater effects on durum wheat crop attributes and soil microbial activities: A pilot study in Syria

2021 ◽  
Author(s):  
Jehan Khalil ◽  
Hasan Habib ◽  
Michael Alabboud ◽  
Safwan Mohammed
Keyword(s):  
Durum Wheat ◽  
Germination Rate ◽  
Soil Samples ◽  
Olive Mill Wastewater ◽  
The Other ◽  
Wheat Crop ◽  
Microbial Activities ◽  
Soil Microbial ◽  
Growing Seasons ◽  
Olive Mill

AbstractOlive mill wastewater is one of the environmental problems in semiarid regions. The main goals of this study were to investigate the impacts of different olive mill wastewater levels on durum wheat (Triticum aestivum var. Douma1) production and soil microbial activities (i.e., bacteria and fungi). A pot experiment was conducted during the growing seasons 2015/2017 to evaluate the effect of three levels of olive mill wastewater on both growth and productivity attributes of wheat. Vertisol soil samples were collected from southern Syria. Two months before wheat cultivation, three levels of olive mill wastewater: T5 (5 L/m 2), T10 (10 L/m2) and T15 (15 L/m 2) were added to pots filled with the collected soil samples. Also, a control (T0) free of olive mill wastewater was considered as a reference. Results showed a significant increase (p < 0.05) in germination rate (%), plant height (cm), ear length (cm), kernels number, kernels weight per ear (g) and grain yield (g/m2) compared to control. However, T5 treatment did not induce a significant increase in terms of ear length, kernels weight per ear or yield (in the second season). On the other hand, T10 treatment had recorded the best results compared with the other two treatments (T5, T15). Similarly, the results showed a significant increase in the number of bacterial and fungi cells by increasing olive mill wastewater concentration. This research provides promising results toward using olive mill wastewater in an eco-friendly way under Syrian conditions.

Mercury speciation and effects on soil microbial activities

2012 ◽  
Vol 47 (6) ◽  
pp. 854-862 ◽  
Author(s):  
Irenus A. Tazisong ◽  
Zachary N. Senwo ◽  
Miranda I. Williams
Keyword(s):  
Mercury Speciation ◽  
Microbial Activities ◽  
Soil Microbial

scholarly journals Comparative assessment of microbial enzyme activity with compost and sewage sludge amendment

2015 ◽  
Vol 7 (2) ◽  
pp. 1021-1028
Author(s):  
Jatinder Kaur ◽  
Sandeep Sharma ◽  
Hargopal Singh
Keyword(s):  
Enzyme Activity ◽  
Sewage Sludge ◽  
Organic Carbon ◽  
Soil Microbial Activity ◽  
Available Phosphorus ◽  
Microbial Activities ◽  
Soil Microbial ◽  
Microbial Enzyme ◽  
Positive Effect ◽  
Digested Sewage Sludge

Changes in soil microbial activities were investigated to examine the effect of aerobically digested sewage sludge (SS) and compared with compost under incubation conditions over 63 days. Sandy soil was amended with 0.25, 0.5, 1.0 and 1.5 % w/w of compost and sewage sludge. Enzyme activity (dehydrogenase, alkaline phosphatase, acid phosphatase, phytase and urease) were examined at an interval of 3, 7, 14, 21, 28, 42 and 63 days. At the end of the experiment the change in organic carbon, nitrogen, potassium and phosphorus was also recorded.Results indicated that enzyme activities were substantially enhanced in presence of both amendments for first few days and the higher increases were measured at 1.5% of compost and sewage sludge amendment. Then an overall decrease in enzyme activity was recorded. Both the amendments also significantly increased the organic carbon, nitrogen and potassium of the soil while increase in available phosphorus was only recorded in treatment receiving compost. The present experiment indicated that addition of compost and sewage sludge have positive effect on soil microbial activity and can be safely used as soil amendment without having any adverse effect. Though, a previous examination of sewage sludge to be used must be made for heavy metals and pathogens.

Impact of essential oils of E. citriodora, O. basilicum and M. arvensis on three different weeds and soil microbial activities

2019 ◽  
Vol 14 ◽  
pp. 100343 ◽  
Author(s):  
Puja Khare ◽  
Shubham Srivastava ◽  
Nidhi Nigam ◽  
Anil Kumar Singh ◽  
Sudan Singh
Keyword(s):  
Essential Oils ◽  
Microbial Activities ◽  
Soil Microbial
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