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KMID : 0903519980410030253
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
1998 Volume.41 No. 3 p.253 ~ p.257
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Behaviour of Fungicide 14C-Propiconazole in a Lysimeter of Sandy Loam
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Abstract
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Behaviour of a fungicide ^(14)C-propiconazole was investigate in a field lysimeter of sandy loam soil. At 15 days after rice-seeding transplanting, ^(14)C-propiconazole was treated on the soil surface at the rate of 0.12 ㎏/10a. The cummulative ^(14)C-propiconazole in the leachate from the lysimeter soil was 4.4% of the ^(14)C for 16 weeks. Most radioactivity detected in leachate was in the form of parent compound. At the end of lysimeter experiment. ^(14)C radioactivity in lysimeter soil was 76.5% of the applied ^(14)C and more than 97% of ^(14)C in soil remained in the top 20 ㎝. The percent of ^(14)CO₂ evolved from lysimeter soil was 7.8% of the applied ^(14)C. The radioactivity remained in the rice straw after harvest was 7.2% of the applied ^(14)C, while less than 0.1% of the applied ^(14)C was detected in flag leaf, ear, chaff and hulled rice, respectively.
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