한국환경농학회지 (Korean Journal of Environmental Agriculture)
- 제3권2호
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- Pages.9-15
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- 1984
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- 1225-3537(pISSN)
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- 2233-4173(eISSN)
Carbofuran 입제(粒劑)의 수중용출(수중용출)과 토양중(土壤中) 분해특성(分解特性)
Release of Carbofuran from Granular Formulations in Water and Its Degradation Patterns in Soils
- Hong, Moo-Ki (Agricultural Chemicals Research Institute) ;
- Hong, Jong-Uck (College of Agriculture, Ktungbook National University)
- 발행 : 1984.12.30
초록
제제형태(製劑形態)에 따른 carbofuran의 수중용출속도와 토양중 잔류소장(殘留消長)을 조사하기 위하여 재결정 하여 정제한 carbofuran 원제와 시판(市販) sand-coated granule 및 실험실에서 립상(粒狀)규조토를 담체(擔體)로 제조한 impregnated granule을 공시(供試)하여 시험한 결과는 다음과 같다. 1) Carbofuran의 수중용출속도는 원제
Experiments were carried out with purified technical grade and two types of impregnated and sand-coated granules of carbofuran, in order to investigate the release patterns in water and the persistence of this chemical in soils. The results obtained are summarized as follows: 1) As regards to release velocity in water, impregnated granule was found to be faster than sand-coated granule. The time to reach maximum concentrations of carbofuran in water from technical carbofuran, impregnated granule and sand-coated granule was 0.5, 3 and 5 days, respectively. 2) Degradation rate of carbofuran in soils decreased in the order of technical carbofuran, impregnated granule, sand-coated granule regardless of soil types and application rates. Degradation of carbofuran in flooded soil was faster than in non-flooded soil. Soil flooding appeared to be the main factor in promoting the degradation of carbofuran in the soil. 3) When carbofuran was fortified in soils in the form of technical carbofuran, impregnated granule or sand-coated granule, the persistencies of two terminal residues of carbofuran, that is, 3-hydroxy carbofuran and 3-keto carbofuran decreased in the order of sand-coated granule, impregnated granule and technical form.
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