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        검색결과 2

        1.
        2016.04 구독 인증기관·개인회원 무료
        Electrolysis techniques(electrokinetic) generally have been used mainly to remove the inorganic salts like Cu, Pb etc. in the soil. In the organic living, the effects of electrolysis has a direct impact on survival by dissociation of the ions inside the cell and accumulation of energy within cells. In this study, It was evaluated for susceptibility to nematodes(Meloidgyne javanica, Pratylenchus coffeae) in accordance with the voltage, current and electrolyte concentration. Using the electrolytic bath and electrolyte material(TAE buffer, Nacl), the susceptibility of nematodes was evaluated in the range of 30 ~ 60V, 0.02 ~ 0.77A. Unusually, the high voltage and amperage did not increase the death rate of nematodes and the most resistant stage was not clear because sensitivity of each stage could not be distinguished. In 30V 0.52A, 0.70A, 0.72A, M. javanica eggs processed for 10 minutes did not hatch at all. In 30V 0.58A, M. javanica juveniles processed for 5 minutes were showed 100% mortality and in 30V 0.77A, P. coffeae juveniles processed for 5 minutes were showed highest sensitivity compared to other treatment range.
        2.
        2015.10 구독 인증기관·개인회원 무료
        The most effective way to control plant parasitic nematodes are immersed in hot water, but the larger-scale processing is difficult to adjust a target processing temperature. Thermal equilibrium formula used to fit the processing temperature was very accurate and effective. Use of the thermal equilibrium formula was determined to be well suited on commercial scale(1400L volume chamber) hot water immersion treatment that should be quickly processed. 1000L of water based on 10%(111kg), 12%(136kg), 15%(176kg) filling ratio was applied in 48oC for 30min treatment and only 10%, 12% filling ratio was applied in 49oC for 10min. In 10% filling ratio, thermal equilibrium has been proceeding rapidly in 1-2 min, and no juvenile hatched in all treatments(at 48oC for 30min, at 49oC for 10min). In 12% filling ratio, though thermal equilibrium has been proceeding in 2 min, few juveniles were hatched in boundary temperature at 49.0oC. In 15% filling ratio, it took 7-8 minutes to reach thermal equilibrium after dipping. The result of applying the two treatment conditions(at 48oC for 30min, at 49oC for 10min) to commercial scale field experiment showed nematodes were almost completely eliminated in hooker chive roots. However, some of living nematodes were observed in 15% filling ratio treatment.