선택한 단어 수는 입니다.
최소 단어 이상 선택하여야 합니다.
최소 단어 이상 선택하여야 합니다.
선택한 단어 수는 30입니다.
최대 10 단어까지만 선택 가능합니다.
최대 10 단어까지만 선택 가능합니다.
제안 방법
- All the crops were classified into two groups called 'high residue' and Tow residue5 according to the dissipation rates of pesticides residues by 50% windows in each crops collected at oy 7 day after application. Crown daisy, Korean lettuce, geumgangcho, whorled mallow and chicory were of high residual group.
- In this study in order to classify the crops into high and low residual group, we have calculated the percent residual ratio of each pesticide using the residue values obtained and the active ingredient present in the commercial products. Because the crop classifications are generally done by the dissipation pattern of pesticides on the agricultural commodities as the active ingredients are different from each other in the commercial formulations.
- out successfully. It could be concluded from the result obtained in this study that, it might be possible to extrapolate residual data of stem-crops from the data of root-crops within same group and that crops that have currently no registered pesticide for use, would be possible to use the pesticides which are already been registered for the similar crops combining the information about the morphology, growth characteristic, residual trial data, crop processing factor, and Acceptable Daily Intake (ADI).
- In case of procymidone, the calculation was done separately as it has a systemic action. The percent residual ratios of all pesticides in each crop were calculated at 1, 3, 5, and 7 day after spraying. The results are shown in Table 4 and 5 which shows that the residues of the applied pesticides in all crops were found to be lower than MRL values at seven day after treatment.
- The spraying concentrations and other information are given in the Table 2. The samples were collected randomly at 1, 3, 5 and 7 days after pesticide plication. After harvesting, collected samples were chopped immediately, mixed, packed separately in plastic bags, labeled and stored at -20℃ until analysis.
- The samples were allowed to stand for 30 min prior to extraction following the same procedure described for the real samples. Three replicate analyses for each concentration were carried out.
대상 데이터
- A total of 22 agricultural crops were selected for present study and divided into eleven leafy-, five root and six stem-crops based on the shape of agricultural products and specific pesticide residues given by Korea Food and Drug Administration (KFDA) and from the result of pesticide residue monitoring in Agricultural Products in 2005 from the National Agricultural Products Quality Management (NAQS), Gwangju, Republic of Korea (Table 1).
- All the selected crops were grown in the in-house experimental farm/green houses of the College of Agricultural and Life Science, Chonnam National University, Gwangju, Republic of Korea. Leafy crops were sown in a dry field dropwort in a green house on a plot measuring 0.
이론/모형
- The samples were extracted by following the method "Korea Food Code No. 83" described in the guidebook by KFDA (2005). A 20-g representative sample of each leafy crop was homogenized with 50 mL acetonitrile for three minutes by a high-speed homogenizer (WiseMix™ HG-150, Daihan Scientific, Korea).
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