초 록 잠자의 중요한 병인 역병(Phytopthora infestans)은 우리나라의 주요씨감자 생산지대인 중부 고랭지대에서 매년 심한 피해를 초래하고 있는데 만일 포장에 역병이 처음 관찰된 후 약제를 살포치 않으면 식물체의 지상부는 14일 이내에 완전고사 하게 된다. 규칙적인 약제살포로 역병방제가 가능하지만 더욱이 역병발생예보에 따라 적기에 약제살포하므로써 방제효과는 물론 생산비를 절감할 수 있게 된다. 본 시험은 1970-1977년 8년간에 걸쳐 대관령의 기상상태와 역병발생 상황을 조사한바 7일 평균기온과 7일 적산강수량을 사용한 Hyre씨의 이동그라프(Moving graph)법에 의한 예보는 정확성이 높지 않았으나 여기에 상대습도와 7일 평균최저기온을 첨가하므로서 비교적 "Moving graph" 법에 의한 예보의 정확성을 높일 수가 있었다. 그러나 아직도 보다 정확한 역병예찰을 위하여 계속적인 조사시험이 필요하다고 생각된다. 또한 약제를 살포하는 곳에서의 역병에 감수성인 품종의 수량은 역병발생정도와 강우량과 밀접한 관계가 있었으며 특히 대관령 지방에서 감자 파종 후 역병발생까지의 일수와 파종 후 90일 수량으로 그 해의 씨감자의 수확양과 공급량을 미리 예측할 수 있게 할 것으로 사료된다.

수출 볏짚 제품내에 들어있는 월도 이화명충을 방제하기 위하여 Phostoxin 훈증제를 기온상태에서 들이 프라스틱 chamber를 사용하여 농도 및 처리시간을 달리하여 시험한 결과 다음과 같은 결과를 얻었다. 1. 월동유충은 처리 48시간, 옹은 24시간, 성충은 8시간에서 의 살충율 얻었다. 2. 약제의 사용농도 보다는 처리시간의 장단에 따라서 살충효과의 차이가 있었다.

1) 쇠파리의 누대 실내사육을 위한 온도는 약 가 좋으며, 이때 유충기간은 약 6.8일, 용기간은 5.3일, 산란전기간은 10.4일, 성충의 수명은 약 30일이었다. 2) 인공사육에 있어서 용화율은 우화율은 였으며 성비는 1 : 1이었다. 3) 용의 체중량은 약 14.5mg이었으며, Wheat bran medium 보다 Standard medium이 사육성적이 좋았다. 4) medium 125gr에 대한 난의 접종수는 약 310개가 가장 적합하였다. 5) rectangular cage를 사용할 경우, 성충의 resting place는 가 적합할 것으로 본다.

This study aims to improve knowledge of consumers’ decision-making by testing a conceptual model that considers the hotel’s service quality and service value toward customers’ behavioral intentions using a mediator, which is the role of consumers’ satisfaction. The object of this research is five-star hotels, which has become a significant segment of the general hotel industry and is undergoing rapid expansion. This research is a quantitative research using questionnaire as the sampling method answered by people who have stayed at five-star hotels before. The total of 150 valid respondents were used in this study. The collected data was processed by a statistical tool software, Partial Least Square (PLS). The major findings of this research showed that the relations between service quality and service value of five-star hotels do not have significant positive impact on consumers’ behavioral intention, nonetheless the mediation analysis shows that customers’ satisfaction partially mediates service quality and service value with consumers’ behavioral intentions to stay. It means that in this case, consumers’ satisfaction has an important role to mediate service value quality and service value. As a result, the study shows that four out of six hypotheses are supported. A couple of recommendations are suggested for further research.

Soluble-NSF attachment protein receptor (SNARE) proteins play a role in vesicle fusion, exocytosis, and intracellular trafficking in neuronal cells as well as in fertilization and embryogenesis. We investigated the expression patterns of two SNARE proteins, SNAP-25 and synaptotagmin VII (SytVII), and their regulation by pregnant mare serum gonadotropin (PMSG) during mouse ovarian follicular development. Ovaries were obtained at 0, 12, 24, 36, and 48 h post-PMSG injection of immature mice. SNAP-25 and SytVII mRNA expression levels increased gradually in a time-dependant manner. However, protein levels revealed different patterns of expression, suggesting different translational regulation following PMSG stimulation. SNAP-25 and SytVII expression was closely associated with thickening of the granulosa cell (GC) layer and follicle morphological changes from a flattened to a cuboidal shape. To explore follicle stimulating hormone receptor (FSHR)-mediated regulation of their expression, GCs from preantral follicles were cultured to examine the effects of FSHR siRNA knockdown. FSHR siRNA abolished upregulation of the SNAREs in both PMSG and FSH-stimulated GCs. This abolished gene expression was rescued by adding dibutyryl cyclic AMP to the cultures. These results suggest that SNAP-25 and SytVII expression is regulated via the FSHR-cAMP pathway during follicular development.

This report describes the inception, development and extensive use over 30 years of elliptical polarimeters at the Uni\-versity of Pennsylvania. The initial Mark I polarimeter design utilized oriented retarder plates and a calcite Foster-Clarke prism as the analyzer. The Mark I polarimeter was used on the Kitt Peak 0.9 m in 1969-70 to accomplish a survey of ap\-proximately 70 objects before the device was relocated to the 0.72 m reflector at the Flower and Cook Observatory. Suc\-cessive generations of automation and improvements included the early-80’s optical redesign to utilize a photoelastic modulated wave plate and an Ithaco lock-in amplifier–the photoelastic modulating polarimeter. The final design in 2000 concluded with a fully remote operable device. The legacy of the polarimetric programs includes studies of close binaries, pulsating hot stars, and luminous late-type variables.

Environment friendly agricultural material products (EFAMs) in current market were evaluated for their insecticidal or acaricidal activities. EFAMs were evaluated against Tetranychus urticae, Plutella xylostella, Myzus persicae and Nilaparvata lugens in spray method. Several EFAMs indicated high control value in spray method. Hatchability of T. urticae was relatively high after EFAM treatment. some materials show high insecticidal activities against P. xylostella larvae but not against eggs. Few meterials showed more than 80% insecticidal activities against M. persicae and N. lugen. The control value of more than half the materials for pest control was lower than 60%. EFAMs containing S. flavescens, neem oil and Rape showed higher control value

To find an alternative for synthetic pesticides, methanol extracts from 69 plant samples were tested for their insecticidal activity against two spotted mite (Tetranchus urticae Koch). Seven plant extracts including Angelica japonica showed over 80% insecticidal activity at 5000 mg/L. Extract of Prunus armeniaca seed showed high insecticidal activity at 3000 mg/L. As a naturally occurring pesticide, P. armeniaca could be useful as a new botanic insecticide.

Crop protection strategies in organic horticulture aim to prevent insect pest and plant disease problems through utilization of non-chemical based control means. In order to develop a model for management of plant diseases and insects in organic cucumber cultivation, we compared efficacies between chemical pesticide spraying system and biological control means in semi-forcing and retarding cucumber cultivation during 2005 and 2006. Conventional chemical spray program using various chemical pesticides was applied 5 - 10 days intervals, while two different non-chemical pesticide application programs using two formulated biopesticides Topseed™ and Q-fect™， Suncho™, and Sangsungje™(biocontrol agents 1) and using egg-yolk and cooking oil(EYCO)， Bordeaux mixture, Suncho™, and ‘Sangsungje™(biocontrol agents 2) were applied 5 - 7 days intervals during entire cucumber cultivation period. Efficacy of both biocontrol agents programs was effective to comparable to conventional chemical pesitice spray program to control plant diseases such as powdery mildew and downy mildew as well as insect pests such as aphids and thrips which are known as major threats in cucumber organic cultivation. In this study, we established and evaluated an effective and economic crop protection strategy using various biological resources can be used to control plant diseases and pests simultaneously in organic cucumber cultivation field.

In organic Chinese cabbage fields, Commercial Bacillus thuringiensis products are used widely against diamond back moth, Plutella xylostella. We conducted the study to determine the effective spray-interval of commercialized B. thuringiensis against diamond back moth on Chinese cabbages. Chinese cabbage leaves were collected 0, 1, 2, 3, 6, 10days after treatment in first trial and 0, 2, 4, 7, 9, 11days after treatment. We compared the insecticidal property of sprayed B. thuringiensis and the density of it on surface of Chinese cabbages using collected leaves. The insecticidal property maintained high until nine days after commercial B. thuringiensis products sprayed.

To improve the soil properties of physical and microbial community rice bran and wood charcoal were applied in the continuously cultivated plastic 꺼1m house soil. Soil physical properties were improved by application of rice bran and charcoal compared to chemical fertilizer application (control) by 8-14% in bulk density and 5-9% in soil porosity. Changes in the biological ratio indexes of fatty acids in the soils were detected depending on the inputted materials. Especially in application of rice bran including mixture with charcoal, much more fungi and less bacteria were detected and the ratio of fungi to bacteria was increased, suggesting the more organic carbon metabolically active in these treatments. The high ratio of aerobe to anaerobe suggested the better aerobic conditions were in the soil inputted wood charcoal. From these results, it is important and possible to select some materials for the organic pepper cultivation, which may improve the poor condition soil.

In this study, growth of pepper seedlings was testedby treating organic materials in a plastic green house in Ssangok-ri Dogok-myeon, Hwasun-gun, Jeollanam Province from February 3, 2010 to April 19, 2010. The raised seedlings were planted to the organic planting area with an interval of 70cmx55cm on April 20 in Deogam-ri Gogeum-myeon Wando-gun and red peppers were harvested at 7 times from July 22 to September 29. Before planting, the plant length of the overgrowth of seedlings was reduced by 26.8% using plant powder treatment as compared to the control group. The red pepper yield was 27% higher than in the control group when 20g of bone ash powder and 20g of plant powder were mixed. The yield tended to increase in other treatments compared to the control group.

Investigation on oriental melon was carried out for 30 minutes starting at 7 PM every day from March 21 to May 24 to find out the effect of light emitting diode on seedling quality, grafting, growth and flowering of oriental melon. According to the result of the investigation, plant height was longer in Blue, Infrared, Red+Blue and Red treatment and leaf number was higher in Blue, Red+Blue and Infrared treatment than those of control. No big difference was identified between control and Yellow, Green, Ultraviolet treatments. Grafting rate was high in Green, Red+Blue and Green treatment. The number of flower evef}' week in control was nine, the number was almost 1 higher in White and Ultraviolet A treatments, but it was 1 to 4 lower in the rest of treatments. The number of female flowers of control was 10, however, it was 21 in Infrared treatment, 17 in White, 15 in Ultraviolet, 13 in Red+lnfrared, 12 in Blue and Red+Blue, 11 in Yellow and 8 in Green.

To screen several promising red pepper cultivars, may be adaptable to organic cultivation conditions, seventy six F1 hybrids commercial and eight local purebred red pepper cultivars were tested. Comparing the infection rate of phytophthora blight between commercial (F1 hybrid) and local (Purebred) cultivars, average infection rate of commercial cultivars was 9.8% and that of local cultivars was 17.8%. But the infected fruits rate of anthracnose in field were similar as 3.3% in commercial (F1 hybrid) and 3.1% in local (Purebred) cultivars. In yield characteristics, average yield of commercial cultivars was 2.89 t ha-' and that of local cultivars was 2.22 t ha- ’ . For organic pepper farmers it is more favourable to cultivation purebred cultivars because they can save to the same quality plant next year's crop. In this study among the local purebred cultivars, two cultivars are promising that their yield near to 3 t ha-' and have disease field resistance.

The test was carried out at a test field at the Wanju Eco-Farming Complex from 2009 to 2010 to figure out the proper application of fertilizers when growing rice at the EcoFarming Complex. The result showed that when compared to the basal application of compost as fertilizer, applying supplementary compost after natural re-seeding of chinese milk vetch (CM씨 helped balance soìl nutrìtìon and maìntained rice yields.

Green manure crops play an inportant role in organic farming. Field experiment was conducted at paddy soi1 (fine loamy, mixed, nonacid, mesic family of Aeric Fluvaquentíc Endoquepts) ín 2008/2009 to 2009/2010 at the Natíonallnstítute of Crop Science (NICS), RDA, Suwon, Gyeonggí provínce, Korea. This expe꺼ment was carried out to evaluate the biomass of haíry vetch (Vicia víllosa) and growth of rice (Oryza satíva) by cjífferent seedíng rates. Seeding rates of hairy vetch consisted of 30, 60, and 90 kg ha-' by broadcasting before rice harvesting. The biomass af)d nitrogen production of hairy vetch were not significantly different between 60 kg ha-’ and 90 kg ha-’ of seeding rates. Also, rice yield was not siginicantly differnt between seeding rate 60 kg ha-’ of hairy vetch and conventional pratice for two years. Therefore, we suggested that seeding rate of hairy vetch should be reduced by continuous cropping and incoportion of hairy vetch under rice-based cropping system.