ICAR Research Data Repository for Knowledge Management
Effect of some soil amendments on dissipation and leaching of pesticides used in rice and wheat crops
KrishiKosh
View Archive Info| Field | Value | |
| Title |
Effect of some soil amendments on dissipation and leaching of pesticides used in rice and wheat crops
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| Creator |
Joshi, Varsha
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| Contributor |
Srivastava, Anjana
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| Subject |
soil amendments, dissipation, leaching, pesticides, rice, wheats, cropping systems
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| Description |
Thesis-PhD
The effect of different soil amendments on leaching and dissipation of the insecticides fipronil and chlorpyrifos, and the herbicide sulfosulfuron was studied under laboratory as well as field conditions in rice and wheat crop. The extraction of pesticides was done using simplified QuEChERS method. Fipronil and Sulfosulfuron were extracted in acetonitrile and were analysed in HPLC with a retention time of 5.9 and 5.1 minutes respectively, whereas hexane was used for the extraction of Chlorpyrifos which was analysed in GC at a retention time of 5.2 minutes. The recovery of fipronil, sulfosulfuron and chlorpyrifos from soil, water and crop samples was 83.0 to 94.6 %, 83.7 to 93.8% and 83.5 to 95.3% respectively. Results from the soil column leaching experiment concluded that CS and FCD were effective in reducing leaching of all the pesticides under laboratory conditions. Gypsum, CS and FCD resulted in the fast dissipation of fipronil and sulfosulfuron, whereas the half life of chlorpyrifos was reduced by the application of FCD and FYM over control. All the parameters of the GW were within the permissible limit in rice and wheat crop. CS and FCD were very effective in reducing the pesticide residue in soil, ground water and crop produce in both the crops. The residue of fipronil in rice grains was below the limit of detection ( |
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| Date |
2016-07-22T15:56:34Z
2016-07-22T15:56:34Z 2015-07 |
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| Type |
Thesis
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| Identifier |
http://krishikosh.egranth.ac.in/handle/1/69422
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| Language |
en
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| Format |
application/pdf
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| Publisher |
G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand)
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