Dongdong ZHANG, Yunli WU, Xiaolin ZHANG, Youfeng ZHU

Persistence of myclobutanil and its impact on soil microbial biomass C and dehydrogenase enzyme activity in tea orchard soils

Persistence of the fungicide myclobutanil in three tea orchard soils with different cultivating ages, neighboring wasteland and forest soils, and its influence on microbial activities in 2- and 50-year-oldtea orchard soils at three rates were studied in the laboratory. Dissipation data fitted well to first-order kinetic equation, except for sterilized treatments, in which neglected dissipation of myclobutanil was observed. At 25oC, the dissipation half-lives (DT50) at level of 1mg kg-1 were in the range of 15.07-69.32 days under non-flooded condition, significantly lower than flooded condition (p < 0.05), indicating that dissipation of myclobutanil was mainly driven by soil microorganisms under aerobic condition. Dissipation rate was significantly increased at 40oC compared to those at 4oC and 25oC for all five soils (p < 0.05). Under all incubation conditions, DT50 were lowest in 50-year-old tea orchard soil (p < 0.01). Correlation analysis between DT50 in tea orchard soils and soil properties showed that soil microbial biomass carbon was negatively correlated with DT50 under 25oC and 60% water holding capacity (p < 0.05). In general, soil microbial biomass carbon and dehydrogenase activity decreased as the concentration of myclobutanil and incubation time increased except 0.1 mg kg-1 spiked soils, in which soil dehydrogenase activity was stimulated after 10 days incubation.

Keywords:

Myclobutanil tea orchard soil, dissipation kinetic, soil microbial biomass, microbial activity,

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Anon. 1993. Agriculture Canada. Decision Document: Myclobutanil. E93-01. Available at: http://publications.gc.ca/collections/Collection/H93-013-4-93-01E.pdf
Athanasopoulos, P.E., Pappas, C.J., Kyriakidis, N.V., 2003. Decomposition of myclobutanil and triadimefon in grapes on the vines and during refrigerated storage. Food Chemistry 82(3): 367-371.
Bending, G.D., Rodríguez-Cruz, M.S., Lincoln, S.D., 2007. Fungicide impacts on microbial communities in soils with contrasting management histories. Chemosphere 69(1): 82-88.
Bromilow, R.H., Evans, A.A., Nicholls, P.H., 1999. Factors affecting degradation rates of five triazole fungicides in two soil types: 1. Laboratory incubations. Pesticide Science 55(12): 1129-1134.
Fang, W.P., Meinhardt, L.W., Tan, H.W., Zhou, L., Mischke, S., Zhang, D., 2014. Varietal identification of tea (Camellia sinensis) using nanofluidic array of single nucleotide polymorphism (SNP) markers. Horticulture Research 35: 1-8.
Dong, F., Li, J., Chankvetadze, B., Cheng, Y., Xu, J., Liu, X., Li, Y., Chen, X., Bertucci, C., Tedesco, D., Zanasi, R., Zheng, Y., 2013. Chiral triazole fungicide difenoconazole: absolute stereochemistry, stereoselective bioactivity, aquatic toxicity, and environmental behavior in vegetables and soil. Environmental Science and Technology 47(7): 3386-3394.
Han, B.J., Chen, L.X., Peng, L.X. 2009. Degradation of four fungicides in tropical soils from Hainan, China. Journal of Food Agriculture and Environment 7(1): 197-200.
Hussain, S., Siddique, T., Saleem, M., Arshad, M., Khalid, A., 2009. Impact of pesticides on soil microbial diversity, enzymes, and biochemical reactions. Advances in Agronomy 102: 159-200.
Keeney, D.R., Nelson, D.W. , 1982. Nitrogen-inorganic forms. In: Methods of Soil Analysis, Part 2: Chemical and Microbiological Properties. 2ndedition. Page A.L., Miller, R.H., Keeney, D.R., (Eds). American Society of Agronomy, Madison WI, USA. pp. 643-698.
Kemmitt, G.M., DeBoer, G., Ouimette, D., Iamauti, M., 2008. Systemic properties of myclobutanil in soybean plants, affecting control of Asian soybean rust (Phakopsora pachyrhizi). Pest Management Science 64(12): 1285-1293.
Kupper, T., Bucheli, T.D., Brändli, R.C., Ortelli, D., Edder, P. , 2008. Dissipation of pesticides during composting and anaerobic digestion of source-separated organic waste at full-scale plants. Bioresource Technology 99(17): 7988-7994.
Liu, X., Dong, F., Wang, X., Zheng, Y., 2009. The dissipation rates of myclobutanil and residue analysis in wheat and soil using gas chromatography-ion trap mass spectrometry. International Journal of Environmental Analytical Chemistry 89(13): 957-967.
Marín-Benito, J.M., Herrero-Hernández, E., Andrades, M.S., Sánchez-Martín, M.J., Rodríguez-Cruz, M.S., 2014. Effect of different organic amendments on the dissipation of linuron, diazinon and myclobutanil in an agricultural soil incubated for different time periods. Science of the Total Environment 476-477: 611-621.
Muñoz-Leoz, B., Ruiz-Romera, E., Antigüedad, I., Garbisu, C., 2011. Tebuconazole application decreases soil microbial biomass and activity. Soil Biology & Biochemistry 43(10): 2176-2183.
Nelson, D.W., Sommers, L.E. 1982. Total carbon, organic carbon and organic matter. In: In: Methods of Soil Analysis, Part 2: Chemical and Microbiological Properties. 2ndedition. Page A.L., Miller, R.H., Keeney, D.R., (Eds). American Society of Agronomy, Madison WI, USA. pp. 539-580.
Olsen, S.R., Sommers, L.E., 1982. Phosphorus. In: Methods of Soil Analysis, Part 2: Chemical and Microbiological Properties. 2ndedition. Page A.L., Miller, R.H., Keeney, D.R., (Eds). American Society of Agronomy, Madison WI, USA. pp. 403-430.
Pesticide Properties Database (PPDB). UK: University of Hertfordshire, 2011. Available at: http://sitem.herts.ac.uk/aeru/ppdb/en/Reports/478.htm
Regulation EU 567/ 2016/. Available at: http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32016R0567.
Singh, N. 2005. Factors affecting triadimefon degradation in soils. Journal of Agricultural and Food Chemistry 53: 70-75.
Singh, N., Dureja, P. 2009. Effect of biocompost-amendment on degradation of triazoles fungicides in soil. Bulletin of Environmental Contamination and Toxicology 82(1): 120-123.
Singh, N., Dureja, P., 2000. Persistence of hexaconazole, a triazole fungicide in soils. Journal of Environmental Science and Health, Part B 35(5): 549-558.
Smiley Jr., P.C., King, K.W., Fausey, N.R. 2014. Annual and seasonal differences in pesticide mixtures within channelized agricultural head water streams in central Ohio. Agriculture Ecosystems & Environment 193: 83-95.
Tabatabai, M.A. 1994. Soil Enzymes. In: Methods of Soil Analysis, Part 2: Chemical and Microbiological Properties. 2ndedition. Weaver RW, (ed.). American Society of Agronomy, Madison WI, USA. pp. 903-947.
Vance, E.D., Brookes, P.C., Jenkinson, D.S. 1987. An extraction method for measuring soil microbial biomass C. Soil Biology & Biochemistry 19(6): 703-707.
Vogel, J.R., Majewski, M.S., Capel, P.D. 2008. Pesticides in rain in four agricultural watersheds in the United States. Journal of Environmental Quality 37(3): 1101-1115.
Wang, H., Yang, J.P., Yang, S.H., Yang, Z.C., Lv, Y.M., 2014. Effect of a 10°C-elevated temperature under different water contents on the microbial community in a tea orchard soil. European Journal of Soil Biology 62: 113-120.
Wang, X., Li, Y., Xu, G., Sun, H., Xu, J., Zheng, X., Wang, F., 2012. Dissipation and residues of myclobutanil in tobacco and soil under field conditions. Bulletin of Environmental Contamination and Toxicology 88(5): 759-763.
Wong, H., Haith, D.A., 2013. Volatilization of pesticides from golf courses in the United States: mass fluxes and inhalation health risks. Journal of Environmental Quality 42: 1615-1622.
WHO/FAO, 2014. Pesticide Residues in Food, Joint FAO/WHO meeting on pesticide residues. World Health Organization/Food and Agriculture Organization of the United Nations. Rome, Italy.
Xue, D., Yao, H.Y., Huang, C.Y. 2006. Microbial biomass, N mineralization and nitrification, enzyme activities, and microbial community diversity in tea orchard soils. Plant and Soil 288 (1): 319-331.
Yan, J., Zhang, D., Zhou, G., Liu, J. , 2009. Soil respiration associated with forest succession in subtropical forests in Dinghushan Biosphere Reserve. Soil Biology & Biochemistry 41(5): 991-999.
Yen, J., Chang, J., Huang, P., Wang, Y. 2009. Effects of fungicides triadimefon and propiconazole on soil bacterial communities. Journal of Environmental Science and Health, Part B 44(7): 681-689.
Zhang, W., Xu, J., Dong, F., Liu, X., Zhang, Y., Wu, X., Zheng, Y. 2014. Effect of tetraconazole application on the soil microbial community. Environmental Science and Pollution Research 21(13): 8323-8332.

Yayın Aralığı: Yılda 4 Sayı
Başlangıç: 2012
Yayıncı: Avrasya Toprak Bilimleri Dernekleri Federasyonu

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