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단감 과원 토양 Fe, Mn 함량 변화와 pH 분석을 통한 석회소요량 추천
이영한(Young-Han Lee),최성태(Seong-Tae Choi),이성태(Seong-Tae Lee),홍광표(Kang-Pyo Hong),송원두(Won-Doo Song),이진호(Jin-Ho Lee),조주식(Ju-Sik Cho) 한국토양비료학회 2010 한국토양비료학회지 Vol.43 No.5
경남지역 단감 재배지 31개소의 토양 미량성분 변화를 조사하여 기초자료로 활용하고 농가현장에서 pH 분석 값을 적용하여 석회소요량을 신속하게 산출할 수 있는 계산식을 구하였다. 가용성 미량성분 함량의 변화는 4월이 표토에서 Fe 76.5 mg kg<SUP>-1</SUP>, Mn 46.1 mg kg<SUP>-1</SUP>,Zn 16.9 mg kg<SUP>-1</SUP> 이었고 심토는 Fe 55.5 mg kg<SUP>-1</SUP>, Mn 35.9 mg kg<SUP>-1</SUP>, Zn 12.3 mg kg<SUP>-1</SUP>으로 가장 높았으며 Mn 함량은 4월 이후 지속적으로 감소되었다. 표토의 pH가 높아짐에 따라 Fe 함량은 y=-18.8x+162(r=0.374, p≤0.001), Mn 함량은 y=-11.5x+98 (r=0.407,p≤0.001)의 고도로 유의적인 부의상관을 나타냈다. 단위면적당 석회소요량 (kg 10a<SUP>-1</SUP>)은 표토의 pH와 y=-171x+1,148 (r=0.881, p≤0.001), 심토의 pH는 y=-190x+1,247(r=0.855, p≤0.001)의 고도로 유의적인 부의상관을 보였다. 따라서 이러한 산술식을 이용할 경우 농가현장에서 석회소요량을 신속하게 산출하여 토양개량제를 시용할 수 있으며 pH로 인한 양분 불균형을 해소할 수 있을 것으로 기대된다. Sweet persimmon yield can be limited by soil pH. This study was performed to rapidly determine the optimal level of lime requirement in sweet persimmon field. Soil chemical properties such as Fe, Mn, and Zn were analyzed soil samples of 31 sweet persimmon fields at Gyeongnam Province every two months from April to October in 2008. The available Fe, Mn, and Zn content were significantly high top soil (76.5 mg kg<SUP>-1</SUP> for Fe, 46.1 mg kg<SUP>-1</SUP> for Mn, and 16.9 mg kg<SUP>-1</SUP> for Zn, respectively), and subsoil (55.5 mg kg<SUP>-1</SUP> for Fe, 35.9 mg kg<SUP>-1</SUP> for Mn, and 12.3 mg kg<SUP>-1</SUP> for Zn, respectively) in April. Furthermore, the Mn content was significantly decreased since April compared to other micronutrients. We found a significant negative correlation between soil pH and lime requirement (r=0.881, p≤0.001 for top soil, and r=0.855, p≤0.001 for subsoil). We suggest that a conversion factor is -171 top soil pH + 1,148 to lime requirement (kg 10a<SUP>-1</SUP>) for top soil, and -190 subsoil pH + 1,247 to lime requirement (kg 10a<SUP>-1</SUP>) for subsoil in sweet persimmon fields. These results supported that the improvement of lime requirement by soil pH value is necessary to rapidly apply to field, and prevent micronutrients over uptake by persimmon plant.
Section 337 Investigations Trade Secret Misappropriation Cases
이영한(Young-Han Lee) 한국APEC학회 2020 Journal of APEC Studies Vol.12 No.2
As practice under Section 337 has grown, so has an interpretation of the law. Practice under Section 337 before the United States International Trade Commission (ITC) requires in-depth analyses and explanations of the participants in a Section 337 investigation and the procedural rules of an investigation and related issues. The ITC offers advantages for a complainant in proving the respondent responsible for case issues. Also, it is better adapted to employ the legal tech to the case. The remedy obtained in which a plaintiff prevails is much more robust; therefore, it gives the complainant a competitive edge. Section 337 investigation requires peculiar elements such as domestic industry, public interest, misappropriation of a trade secret, protection of the trade secret, and the trade secret’s economic value. Each element above needs an in-depth review to understand the characteristics of the investigation deeply. For instance, the domestic industry element for trade secret misappropriation requires in-depth case studies because the legal standard differs from patent infringement. Moreover, the legal standard itself variated from its initiation and relaxed itself to facilitate intellectual property rights holders’ protection, and thus it is crucial to investigate the specifics of other elements of the Investigations. The practice in Section 337 investigations has a significant impact on the APEC region due to the nature of cross-border disputes related to intellectual property, based on importing into the US territory. The ban on importation to the US gravely impacts trade amongst the APEC region, and APEC member economies should make an in-depth review of the Section 337 investigations.