Journal of Food, Agriculture and Environment

Determination of absorption and degradation of some pesticides in biobed

Author(s):

Ali Musa Bozdogan ^{1 *}, Nigar Yarpuz-Bozdogan ², Husniye Aka-Sagliker ³, M. Eren Oztekin ², Nebile Daglioglu ⁴

Recieved Date: 2013-10-09, Accepted Date: 2014-01-14

Abstract:

Pesticides are extensively used for controlling pests in agriculture. Point source pesticide pollution has potential damage on environment during filling, mixing, and cleaning spraying equipment. Biobed, originated in Sweden, is a biological pit which is used for reducing pesticide contamination to environment during filling, mixing, and cleaning of sprayers. The aim of this study was to determine of pesticide absorption and degradation of malathion, dichlorvos, and fenthion active ingredients in biobed and farm-soil, and comparation of these conditions. The biomixture in biobed was prepared by mixing soil, peat and wheat straw in the volumetric proportions of 1:1:2, respectively. In this research, biobed and farm-soil samples were taken at 0-15, 15-30 and 30-50 cm for determination of pesticide concentration. Biobed and farm-soil samples were taken for each chemical treatment at trial days, and 7, 14, 21, 28, 35, 42, 49, 56, 63 and 70 days after treatment. All chromatographic analyses were performed on gas chromatograph equipped with nitrogen-phosphorus dedector. Solid phase extraction method was used for pesticide analysis. Regarding to the results, the maximum residues of all pesticides in biobed system and farm-soil were obtained at trial days. There is statistically significant difference in malathion and dicholorvos between biobed and farm-soil. There is no significant difference in fenthion. In the result of this study, all pesticides (malathion, dicholorvos, and fenthion) in biobed were absorbed more than in farm-soil. These results showed that biobed has higher effect than farm-soil on the absorption of pesticides. Malathion and fenthion in the biobed reached half-life value of pesticide in the soil for longer period of time according to the farm-soil. Yet, in the biobed, the half-life value of dichlorvos in the soil was reached for shorter period than in farm-soil. It was concluded that, in this study, biobed should be used for protecting of environment against point source pesticide pollution, during filling, mixing, and cleaning of sprayers.

Keywords:

Biobed, farm-soil, absorption, degradation, pesticide, point source pollution

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Journal: Journal of Food, Agriculture and Environment
Year: 2014
Volume: 12
Issue: 1
Category: Environment
Pages: 347-351

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