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Paper Information

Journal:   JOURNAL OF AGROECOLOGY (كشاورزي بوم شناختي)   SPRING 2016 , Volume 6 , Number 1; Page(s) 213 To 226.
 
Paper: 

IDENTIFICATION AND PROLIFERATION OF SOIL MICROORGANISMS IN MARZANABAD REGION WITH CAPABILITY IN APPLYING FOR SOIL AND WATER CONSERVATION

 
 
Author(s):  KHEIRFAM HOSSEIN, ZAREI DARKI BEHROUZ, SADEGHI SEYED HAMIDREZA*, HOMAEE MEHDI
 
* DEPARTMENT OF WATERSHED MANAGEMENT ENGINEERING, FACULTY OF NATURAL RESOURCES, TARBIAT MODARES UNIVERSITY, MAZANDARAN, IRAN
 
Abstract: 

Introduction: In developing countries land degradation and, as a consequence, soil quantity and quality reduction are the main challenges in sustainable development. Recently, the role of soil microorganisms in improving the soil properties of land prone to erosion and degradation has been approved. However, improving the performance of soil microorganisms through their direct inoculation can be a new strategy in soil and water conservation. Therefore, the identification and bulk scale proliferation and widespread use of bacteria and cyanobacteria are necessary for reducing soil loss and runoff. Accordingly, this study was planned to isolate, identify and proliferate the most appropriate indigenous bacteria and cyanobacteria for soil and water conservation.
Materials and methods: In order to isolate and identify the bacteria and cyanobacteria, soil sampling was carried out from erosion-prone region of the vicinity of Marzanabad-Kandeloos. According to the TSA and Nutrient Agar (Lecomte et al., 2011) and Bold Basal and CHU10 (Andersen, 2005) experimental protocols, general media were used for the isolation and identification of bacteria and cyanobacteria, respectively. The isolated bacteria and cyanobacteria were then identified by microscopic examination along with their distinguishing morphological characteristics (Bergey and Breed, 1957). The most effective bacteria and cyanobacteria were consequently selected for the purpose of soil loss and runoff reduction. The selected soil microorganisms were purified by selective media (Atlas, 2010; Schrey et al., 2012) and then proliferated in high bulk and number.
Results and discussion: The results showed the existence of different bacteria viz. Pseudomonas sp., Arthrobacter sp., Azotobacter sp., Diplococcus sp., Streptococcus sp. and Bacillus sp., and cyanobacteria viz. Nostoc sp., Oscillatoria sp., Lyngbya sp., Phormidium sp., Aphanothece sp., Diatoms and Xanthophyta in the soil microorganism’s bank. Eventually, Azotobacter sp. as free-living and nitrogen-fixing bacteria and the Bacillus subtilis strain with a high polysaccharides secreting capability and Nostoc sp. and Oscillatoria sp. as nitrogen-fixing and polysaccharides secreting cyanobacteria were selected as the genus with high functionality in soil and water conservation; this was based on some criteria such as survival power, proliferation and activity under inappropriate conditions, secretion of adhesive polysaccharides power, networking growth, the creation of micro and macro structures and being non-pathogenic for humans and other organisms. Since, after the proliferation process, the population of bacteria and cyanobacteria in one gram of original soil increased from 6.4×104 and 1.3×104 to 6.25×1014 and 2×1015 per gram, inoculation and increase of bacteria in soil could enhance the microbial activity of the soil crust. In addition, the secreted polysaccharides of bacteria could connect the soil particles together and increase soil porosity. The maintained processes could improve soil properties, and decrease soil and water loss. Furthermore, the feasibility of bacteria and cyanobacteria inoculation into widespread area was proven as a perdurable and biological stabilizer. According to economic evaluation, the cost of producing and inoculating bacteria and cyanobacteria could be up to 2 to 24 times lower than natural and artificial stabilizers.
Conclusion: The results of the present study proved the feasibility of identification and proliferation of useful soil microorganisms in soil and water conservation from an erosion-prone region. Therefore, combined widespread use of selected and proliferated bacteria and cyanobacteria by aircraft could increase soil particle adherence, soil aggregate stability, soil porosity and permeability and, consequently, conserve soil and water resourses.

 
Keyword(s): BIOLOGICAL SOIL CRUST, SOIL AND WATER MANAGEMENT, SOIL AMENDMENTS, SOIL MICROORGANISM’S BANK
 
 
References: 
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Cite:
APA: Copy

KHEIRFAM, H., & Zarei Darki, B., & SADEGHI, S., & HOMAEE, M. (2016). IDENTIFICATION AND PROLIFERATION OF SOIL MICROORGANISMS IN MARZANABAD REGION WITH CAPABILITY IN APPLYING FOR SOIL AND WATER CONSERVATION. JOURNAL OF AGROECOLOGY (کشاورزی بوم شناختی), 6(1), 213-226. https://www.sid.ir/en/journal/ViewPaper.aspx?id=543689



Vancouver: Copy

KHEIRFAM HOSSEIN, Zarei Darki Behrouz, SADEGHI SEYED HAMIDREZA, HOMAEE MEHDI. IDENTIFICATION AND PROLIFERATION OF SOIL MICROORGANISMS IN MARZANABAD REGION WITH CAPABILITY IN APPLYING FOR SOIL AND WATER CONSERVATION. JOURNAL OF AGROECOLOGY (کشاورزی بوم شناختی). 2016 [cited 2021April19];6(1):213-226. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=543689



IEEE: Copy

KHEIRFAM, H., Zarei Darki, B., SADEGHI, S., HOMAEE, M., 2016. IDENTIFICATION AND PROLIFERATION OF SOIL MICROORGANISMS IN MARZANABAD REGION WITH CAPABILITY IN APPLYING FOR SOIL AND WATER CONSERVATION. JOURNAL OF AGROECOLOGY (کشاورزی بوم شناختی), [online] 6(1), pp.213-226. Available at: <https://www.sid.ir/en/journal/ViewPaper.aspx?id=543689>.



 
 
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