추황배'에서 칼슘이 코팅된 이중봉지를 이용하여 봉지 물성, 미기상, 과실로의 칼슘 축적 및 과실품질에 미치는 영향을 조사하였다. 칼슘처리봉지는 관행봉지와 비교하여 투광율, 인장강도, 온도 및 상대습도는 차이가 없었다. 그러나 칼슘처리 봉지의 과피내 칼슘 함량은 만개 후 65일 부터 160일 까지 관행 봉지보다 현저히 많았다. 그러나 과육에서는 160일에서만 증가되었다. 칼슘처리 농도별 과실내 칼슘함량은 과피에서는 황색이중봉지 12%, 신문이중봉지 9, 12%에서 높았고 과육에서는 황색이중봉지 3%, 신문이중봉지 6, 9, 12%에서 현저히 높았다. 방사성 등위원소를 이용한 과피 및 과실로의 칼슘 축적은 과피는 처리 후 60시간까지 증가였으나 과육 조직은 무처리 과피와 큰 차이는 없었다. 수확시 과실경도는 황색이중봉지는 농도 간 큰 차이는 없었으나, 칼슘 6, 12%처리 신문이중봉지에서 현저한 차이를 보였다. 가용성고형물은 칼슘 6, 9%처리 황색이중봉지와 3, 6, 9%처리 신문이중봉지에서 현저히 높았다. 그러나 봉지내 칼슘처리에 따른 과중 및 과피색 변화는 차이가 없었다.

Toxicity of 10 registered insecticides and 6 fertilizers were tested against 3<SUP>rd</SUP> larva and adults of Korean firefly, Luciola lateralis Motschulsky (Coleoptera: Lampyridae). All experiments were tested at the recommended concentration of each inescticides by producer. MEP, PAP, Acephate, Fenthion, and Diazinon, which were organophates, a mixtures combined with Burofezin fenobucarb, Cartap ･･ buprofezin, and Thiamethoxam (Neonicotinoids), Fipronil (Phenylpyrazoles) showed more 80.0% mortality on larva and adults of L. lateralis. However, tebufenozide (I.G.R) showed low mortality of 33.3%. LC₅₀ (ppm) value of Assit, Cartapㆍbuprofezin, Fenthion and PAP were showed 1.03 ppm, 1.90 ppm, 10.26 ppm, 0.98 ppm, respectively, against 3<SUP>rd</SUP> larva of L. lateralis. Effects against eggs showed very high toxicity. Otherwise, tebufenozide (I.G.R) was showed hatchability of 100%. Toxicity of Urea fertilizer, Ammonium sulfate, Potassium chloride, Fused phosphate, Complex fertilizer and Silicate fertilizer were showed the mortality with 27.3%, 56.7%, 73.3%, 0.0%, 0.0%, 0.0%, respectively, when exposed 72 hrs after treatment.

The Welsh onion beet armyworm, Spodoptera exigua (Hübner), has attacked Welsh onion and is now the most important pest of Welsh onion in southwestern Korea. The beet armyworm has a wide host range, occurring as a serious pest of vegetable and fields. The relatively high abundance of beet armyworm has stimulated frequent application of insecticides to foliage. Insecticide resistance is a major problem in management of this insect. Accordingly, pesticide application for the control of beet armyworm was tried in both the open field and in laboratory, using 4 synthetic compounds such as metaflumizone and chlorfenapyr, indoxacarb, flufenoxuron, emamectin benzoate. In the laboratory, each developmental stages from eggs, larva to pupa was tested against 4 insecticides. Against the eggs of welsh onion beet armyworm, there was no significantly different with each other. These tested chemicals no killing effect to eggs. However, the population of 1st larva hatched from eggs were reduced because they eaten the egg shell with residual insecticides. The tested insecticides were taken very high mortalities to 1st to 3rd larva of Welsh onion beet armyworm. Otherwise, there were decreased the death rate from 4th to 6th larva. On the other hand, their value of control effects were relatively good against Welsh onion beet armyworms in the field between 87.2 and 90.5% on 10 days after insecticide application.

포도에서 봉지 종류, 봉지 처리시기 및 식물성 오일처리에 따른 열과와 병 발생 및 과실 품질에 미치는 영향을 조사하였다. 봉지 종류별 열과 및 탄저병 경감효과는 '캠벨얼리'에서 열과 발생은 큰 차이를 인정할 수 없으나, 탄저병 발생은 무대처리를 제외한 모든 처리에서 감소하였다. '조생 캠벨얼리'에서 열과 및 탄저병 발생은 무대처리를 제외한 관행봉지, 창문봉지, 칼슘함유봉지 처리에서 감소하였다 '캠벨얼리'에서 모두 7월 5일 이전의 봉지처리에서, '거봉'에서는 각각 6월 29일과 7월 6일이전의 봉지처리 모두에서 현저하게 줄었다. 식물성오일 처리는 '조생 캠벨얼리'에서 열과 및 탄저병 발생률을 현저히 줄 일수 있었고 '캠벨얼리'에서는 과피의 칼슘함량을 증가시켰다. 봉지종류별 과실품질 중 가용성고형물은 창문봉지 처리에서 많이 감소되었으며 칼슘함유봉지 처리에서는 Hunter b값이 떨어졌다. 따라서 칼슘함유봉지 및 식물성오일 처리는 열과 경감효과가 있는 것으로 판단되었다.

We have preliminarily designed two infrared optical systems of the multi-purpose infrared camera system (MIRIS) which is the main payload of STSAT-3. Each optical system consists of a Cassegrain telescope, a field lens and a 1:1 re-imaging lens system that is essential for providing a cold stop. The Cassegrain telescope is identical for both of two infrared cameras, but the field correction lens and re-imaging lens system are different from each other because of different bands of wavelength. The effective aperture size is 100mm in diameter and the focal ratio is f/5. The total length of the optical system is 300mm and the position of the cold stop is 25mm from the detector focal plane. The RMS spot size is smaller than 40μm over the whole detector plane.