IJCRR - Vol 07 Issue 04, February, 2015
EFFECT OF TRIAZOPHOS-AN ORGANOPHOSPHATE INSECTICIDE ON MICROBIAL POPULATION IN PADDY SOILS
Author: B. Lakshmi Kalyani, T. Madhuri, V. Indrani, P. Suvarnalatha Devi
Triazophos is a Thiophosphoric and is the active ingradient of the insecticide Hostathion. The aim of the study is to determine the effects of triazophos at five different concentrations on soil bacterial and fungal count. The effect of triazophos on bacterial and fungal population by incubation in soil for 7 days was determined. Results revealed that triazophos caused significant reduction in the bacterial and fungal populations. By statistical analysis, the concentrations of the pesticides as well as the dilution of soil sample were analyzed by two way ANOVA. Study reveals that both bacterial and fungal population the concentration of triazophos vs sample dilution has been significantly affected. The change in concentration brought significant reduction in bacterial count. We conclude that triazophos insecticide is using in paddy soils highly toxic pollutant to the bacterial and fungal organisms.
Keywords: Triazophos, Soil, Bacteria, Fungi, Two- way ANOVA
B. Lakshmi Kalyani, T. Madhuri, V. Indrani, P. Suvarnalatha Devi. EFFECT OF TRIAZOPHOS-AN ORGANOPHOSPHATE INSECTICIDE ON MICROBIAL POPULATION IN PADDY SOILS International Journal of Current Research and Review. Vol 07 Issue 04, February, 63-67
1. Ahmed S and Ahmed M S. Effect of Insecticides on the total number of soil bacteria under laboratory 2006.
2. Alexander M. Introduction to Soil Microbiology. John Wiley and Sons, Inc., New York.and field conditions. Pakistan Entamologist 1977; 28(2):63-67.
3. Anderson J F. Energy content of spider eggs . Oecologia 1978; 37 :41-57.
4. Aungpradit T, Sutthivaiyakit P, Martens D, Sutthivaiyakit S and Kettrup A A F. Photocatalytic degradation of triazophos in aqueous titanium dioxide suspension: identification of intermediates and degradation pathways. Journal of Hazardous Materials 2007;146(1):204–13.
5. Babu J N, Bhalla V, Kumar M, Mahajan R K and Puri R K. A chloride selective sensor based on a calyx arene possessing a urea moiety. Tetrahedron Letters 0040- 4039. 2008 ;49: (17) 2772-2775.
6. Chandra P and Bollen W B. Effect of nabam and mylon on nitrification, soil respiration and microbial numbers in four Oregon soils. Soil Science 1961; 92:387.
7. Chapman R A and Harris C R. Persistence of isofenphos and isazophos in a mineral and an organic soil. Journal of Environmental Science and Health section B 1982;17: 355-361.
8. Digrak M and Kazanici F. Effect of some organophosphorus insecticides on soil microorganisms. Turkey Journal of Biology 2001; 25: 51-58.
9. Domsch K H. The effects of soil fungicides. III. Quantitative changes in soil microflora. Z.Planzendau Pflanzenschutz 1959; 66:17.
10. Gorder G W, Dahm P A and Tollefson J J. Carbofuran persistence in cornfield soils. Journal of Economic Entomology 1982; 75: 637-642.
11. Hashem F, Hafes H and El-Mohandes M A O. Isolation and identification of pyrethroid insecticides degrading bacteria from soil. Ann. Agric. Sci. Cairo., 1999; 44(1): 123-137.
12. Jenkinson D S and Ladd J N. Microbial biomass in soil: Measurement and turnover. In: Paul EA, Ladd JN (eds) Soil Biochemistry, vol 5. Marcel Dekker, New York, Basel 1981 ;415-471.
13. Kanekar P P, Bhadbhade B, Deshpande N M and Sarnaik S S. X Biodegradation of organophosphorus pesticides, IN : Proceedings of Indian National Science Academy 2004;70:57- 70.
14. Lin K D, Yuan D X. Degradation kinetics and products of triazophos intertidal sediment. Jounal of Environmental Sciences 2005;17(6):933–6.
15. Racke K D and Coats J R. Comparative degradation of organophosphorus insecticides in soil : Specificity of enhanced microbial degradation. Journal of Agriculture and Food Chemistry 1988; 36: 193- 199.
16. Ranjard L and Richaume A S. Quantitative and qualitative microscale distribution of bacteria in soil. Research in Microbiology 2001;152: 707-716.
17. Sharmila M, Ramanand K and Sethunathan N. Effect of yeast extract on the degradation of organophosphorus insecticides by soil enrichment and bacterial cultures. Canadian Journal of Microbiology 1989; 35: 1105-1110.
18. Shetty P K and Magu S P. Effect of metalaxyl on soil microbial population. Journal of Tropical Agriculture 2000 ; 38: 63-65.
19. Shukla P K and Mishra R R. Response of microbial population and enzyme activities to fungicides in potato field soil. Proceedings of Indian National Science Academy section B 1996; 62 (5): 435-438.
20. Stanlake G J and Clark J B. Effects of a commercial malathion preparation on Selected Soil Bacteria. Applied Microbiology 1975; 30(2) :335-336.
21. Tawfic M A, Ismail S M M and Mabrouk S S. Residues of some chlorinated hydrocarbon pesticides in rainwater, soil and ground water and their influence on some soil microorganisms. Environmental International 1998 ; 24(5-6): 665-670.