C. Babu P. Janaki C. Chinnusamy


Pesticides though formulated to be biologically degradable, few herbicides reported to cause surface and groundwater contamination which needs the monitoring of herbicide residues in environment continuously. Thus, to monitor the persistence and residues in crops, imazethapyr degradation studies were conducted in soil with groundnut cropping under Indian tropical condition. A groundnut field was treated with different doses of imazethapyr as early post emergence. Results showed that the degradation of imazethapyr in soil and groundnut plant followed first order reaction kinetics irrespective of the dose. The residue of imazethapyr persists in soil up to 60 days at higher rates of application while it persists up to 30 days in plant with the calculated half life of 2.8 to 7.4 days in soil and 5.1 to 5.9 days in plant. At the time of harvest, the residue of imazethapyr in soil, groundnut haulm or pods were below the detectable limit of 0.008 mg/kg across different doses of application. However, the continuous and inappropriate use in light textured soils may cause groundwater contamination and bioaccumulation in plant system. Hence, a pre harvest interval of 75 days must be allowed after the application of imazethapyr for the weed control in groundnut.


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Groundnut, HPLC, Imazethapyr, Persistence, Soil

Agricultural Statistics (2009). Agricultural Statistics at a glance. Directorate of Economics and Statistics. Dept. of Agric. and Co-operation. Ministry of Agriculture, Government of India
Ahmad, R., Kookana, R.S. and Alston, A.M. (2001). Sorption of ametryn and imazethapyr in twenty-five soils from Pakistan and Australia. J. Environ. Sci.Health, B. 26:143-160.
Ascenzo, G.D., Gentili, A., Marchese, S., Marino, A. and Perret, D. (1998). Rapid and simple method for extraction and determination of imidazolinone herbicides in soil. Analysis, 26(7): 251-255
Barkani, H., Catastini, C. and Emmelin, M. (2005). Study of the photo transformation of imazaquin in aqueous solution: A kinetic approach. J. Photochem. Photobiol., A: Chem., 170:27-35
Curran, V.S., Liebl, R. and Simmons, F.W. (1992). Effects of tillage and application method on clomazone, ima-zaquin and imazethapyr persistence. Weed Sci., 40:482-489
Davies, D.H.K. and Welsh, J.P. (2002). Weed control in organic cereals and pulses In: D. Younie, B.R. Taylor, J.M. Welch and J.M. Wilkinson Edn. Organic cereals and pulses. Chapter 5, Chalcombe public. p.77-114
Flint, J.L. and Witt, W.W. (1997). Microbial degradation of imazaquin and imazethapyr. Weed Sci., 45:586-591
Goetz, A.J., Lavy, T.L. and Gbur, E.E. (1990). Degradation and field persistence of imazethapyr. Weed Sci,. 38: 421 -428
Janaki, P., Sathya Priya, R. and Chinnusamy, C. (2013). Field dissipation of oxyfluorfen in onion and its dynamics in soil under Indian tropical conditions, Journal of Environmental Science and Health, Part B: Pesticides, Food Contaminants, and Agricultural Wastes, 48:11, 941-94
Johnson, D.H., Shaner, D.L., Deane, J. (2000). Mackersie L.A. and Tuxhorn G., Time-dependent adsorption of imazethapyr to soil. Weed Sci., 48:769-775
Loux, M.M. and Reese, K.D. (1993). Effect of soil type and pH on persistence and carryover of imidazolinone herbicides. Weed Technol., 7:452-458
Mills, J.A. and Vitt, W.W. (1989). Efficacy, phytotoxicity and persistence of imazaquin, imazethapyr and clomazone in no-till double-crop soybeans (Glycine max). Weed Sci., 37:353-359
Patel, R.K; Sondhia, S. and Dwivedi, A.K. (2009). Residues of imazethapyr in soybean grain, straw and soil under application of long term fertilizers in Typic Haplustert. Indian Journal of Weed Science 41(1&2): 90-92.
Pusino, A., Petretto, S. and Gessa, C. (1997). Adsorption and desorption of imazapyr by soil. J. Agric. Food Chem., 45:1012-1016.
Sondhia, S. (2013). Evaluation of imazethapyr leaching in soil under natural rainfall conditions. Indian Journal of Weed Science 45 (1): 58–61.
Sondhia, S. (2014). Herbicides residues in soil, water, plants and non-targeted organisms and human health implications: an Indian perspective. Indian Journal of Weed Science, 46 (1): 66–85.
Stougaard, R.N., Shea, P.J. and Martin, A.R. (1990). Effect of soil type and pH on adsorption, mobility and efficacy of imazaquin and imazethapyr. Weed Sci., 38: 67-73
Szmigielska, A.M. and Schoenau, J.J. (1999). Analysis of imazethapyr in agricultural soils by ion exchange membranes and a canola bioassay. Commun. Soil Sci. Plant Anal., 30 (13&14): 1831-1846
Vencill, W.K. (2002). Imazethapyr. In Herbicide handbook, 8th ed. Weed Science Society of America: Lawrence, KS, 2002; 331–333.
Wyk, L.J.V. and Reinhardt, C.F. (2001). A Bioassay Technique Detects Imazethapyr Leaching and Liming-Dependent Activity. Weed Science Society of America, 15(1): 1-6.
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Babu, C., Janaki, P., & Chinnusamy, C. (2015). Effect of rate of application on degradation of imazethapyr in groundnut and soil under tropical Indian condition. Journal of Applied and Natural Science, 7(2), 714-718. https://doi.org/10.31018/jans.v7i2.671
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