Effect of [N-(Phosphonomethl)-glycine] (Glyphosate) Herbicide on Soil Microbial Population
Asian Soil Research Journal,
Aims: To determine the effect of [N-(phosphonomethl)-glycine] (glyphosate) herbicide on soil bacterial and fungal population.
Study Design:The effect glyphosate herbicide on soil microorganisms population on 2 different farm land was determined by Isolation of bacteria and fungi from untreated and Glyphosate herbicide treated soils using Nutrient agar and Potatoes dextrose agar (PDA) for the bacteria and fungi respectively. The number of bacteria and fungi present in both treated and untreated soil was then enumerated and the isolates determined.
Place and Duration of Study: The study is a cross sectional research and was conducted on two Farm lands located at Yola capital city of Adamawa state Nigeria wheresoil samples were collected and Microbiology laboratory of Modibbo Adama University Yola were the sample was processed and analyzed. The study was conducted from February to May of 2021.
Methodology: Bacteria and fungi were isolated from soil samples before and after treatment of the soils with N-(phosphonomethl)-glycine(Glyphosate) herbicide at different concentration, the bacteria and fungi populations isolated both before and after the treatment were compared.
Results: The study showed that Glyphosate herbicide caused reduction in the bacterial and fungal count from 3 days of treatment up to 15 days. The bacterial count reduced from 6.1x108cfu/g in the untreated soil to 1.6x108cfu/g on the treatment. Also the fungal count reduced from 1.0x108cfu/g in the untreated soil to 5.0x107cfu/g after 15days of soil treatment. Both the bacterial and fungal count continues to show a gradual decrease up to 15 days in the treated soil. However, several bacteria and fungi were isolated with Bacillus spp. and Micrococcus spp. having the bacteria with highest occurrence with 42(19.91%) and Aspergillusspp. as the fungi with the highest occurrence with 12(42.85%). Statistical analysis of the data obtained indicated that At 95% confidence level, there is a significant difference in the population of bacteria and fungi before and after the soil treatment P-value(T˃t)=.001
Conclusion: The study revealed that Glyphosate herbicide has a negative effect on soil bacteria and fungi population.
- microbial population
- soil and untreated
How to Cite
Adenikinju SA, Folarin JO. Weed Control in Coffee in Nigeria with Gramozone Production Sixth Annual Conf. Weed Sci. Six Nigeria. 1976;1
[Araujo ASF, Manteiro RTR, Abarkeli RB. Effect of Glyphosate on the microbial activity of two Brazilian soils. Chemosphere. 2003;52:799-804.
OuldedBenlama and Abderrahmane Boulahrouf Impacts of Glyphosate herbicide application on the microbial activity of two Algerian soils; International Journal of Current Microbiology and Applied Science. 2013;2(12):628-635.
Ayansina ADV, Ogunshe AAO, Fagade OE. Environment impact Assessment and microbiologist: An overview. Proc.Of 11th annual national conf. of Environment and Behaviour Association of Nig. (EBAN). 2003;26-27.
Alexander M. How toxic are toxic chemical in Soil, Environ. Sci. Technol. 1995;29: 2713-2717.
Cheesbrough M. District Laboratory Practice in Tropical Countries. Second Edition, Cambridge University Press. UK, London; 2006.
Doran JW, Parkin TB. Defining and assessing soil quality. In: J.W. Joran, D.C. Coleman, D.F. Bezdicek and B.A. Stewart (eds.). Defining soil quality for sustainable environment, SSSA Special Publ. No. 35, Madison, Wisconsin, USA. 1994;1-21.
Sanchez PA, Sheperd KD, Soule FM, Place RJ. Buresh AMN. Izac AU. Mokwunye FR. Kwesiga CG. Ndiritu PL. Woomer. Soil Fertility Replenishment in Africa. An Investment in Natural Resources Capital. In: R.J. Buresh, P.A. Sanchez and F. Calnoun (eds.). SSSA Special Publication No. 51. SSSA. Am. Soc. Agron. Madison, Wisconsin, USA. 1997;1-46.
He ZL, Alva AK, Calvert DV, Li YC, Banks DJ. Effects of N fertilization of grapefruit trees on soil acidification and nutrient availability in a Riviera Fine Sand. Plant Soil. 1999;206:11-19.
Jamala GY, Shehu HE, Musa AM, Abraham P. Evaluation of fertility status and irrigation potentials of selected Fadama soils in Adamawa State, North-eastern Nigeria Journal of Soil Science and Environmental Management. 2012; 3(7):176-181.
Gailyson Y. J. and David O.O Soil profile characteristics as affected by land use systems in the southeastern Adamawa state Nigeria. Journal of agriculture and veterinary science. 2013. 6(4): pp 4-11.
Abstract View: 132 times
PDF Download: 85 times