본 연구는 한국 특산식물이자 희귀식물인 물들메나무를 대상으로 분포 현황과 생육환경 특성, 종조성을 바탕으로 생태적 특성을 구명하였다. 물들메나무가 출현한 입지를 대상으로 생육환경 조건의 기재 및 식물사회학적 방법에 따라 식생조사가 수행되었으며, 출현종 양상과 환경변수의 상관관계 분석, 출현종의 식물 형질 분석을 수행하였다. 총 12개 지역, 28개 조사구에서 물들메나무 우점 입지 19개, 비우점 입지 9개가 확인되었으며, 총 155분류군이 출현하였 다. 물들메나무 조사구의 생육환경은 한국 식생기후를 기준으로 대부분 온대북부 낙엽활엽수림대에 위치하여 한랭한 입지이며, 해발고도는 평균 859m, 암석노출도는 평균 60.4%, 토양노출도는 평균 24.7%, 경사도는 평균 18.7˚로 나타났 다. 출현종 중 상위 P-NCD(백분율기여도)에 해당하는 분류군은 대부분 계곡 식생에 출현하는 분류군으로 특기되었다. 환경변수의 상관관계 분석에서 해발고도가 가장 큰 상관관계를 보였으며, 그 다음은 암석노출도로 확인되었다. 물들메 나무림의 동태는 교목수종에 해당하는 분류군 중 관목층과 초본층에서 물들메나무가 높은 P-NCD값을 보여 지속적으 로 유지될 것으로 보인다. 현재 물들메나무가 출현하는 입지의 대부분은 국립공원, 도립공원, 군립공원 등의 보호구역 내에 출현하여 인위적 교란요인이 비교적 적은 편이나, 일부 국가보호구역 미지정 지역의 경우 숲가꾸기 사업 또는 신규 등산로 개설로 인한 생육지 질의 쇠퇴 가능성이 있으므로, 이들 지역에 대하여 산림유전자원보호구역 설정과 같은 관리 방안이 제안되었다. 또한 물들메나무의 다양한 환경조건을 기반으로 잠재적 분포 가능 입지 파악 및 현지 외 보전 후보지역 설정을 위한 후속 조치 및 연구가 수행되어야 할 것이다.

To investigate the suitable growing area for Italian ryegrass (cv. Kowinearly and cv. Green-Call), we survey the different effects of climatic conditions on plant growth in the east (hereafter termed Yeongdong) and west (hereafter termed Yeongseo) of the passes in Gangwon Province. The Italian ryegrass was grown in Gangneung of Yeongdong and Wonju and Chuncheon of Yeongseo. The plants showed growth differences depending on the cultivated regions between before and after wintering. The Italian ryegrass for pre-wintering showed the relatively long length of plant height in Wonju. While, we observed the relatively tall plants for growing- and harvestingperiod after wintering in Gangneung. The increased plant height in Gangneung was closely related to all climatic conditions for the growing period and mean- and lowest-temperature for the harvesting period, respectively. The amount of dry matter was 7,490 kg/ha for Kowinearly and 6,490 kg/ha for Green-Call in Gangneung, which has a higher yield than Chuncheon and Wonju. The relative yield index of dry matter was 77% (Kowinearly) and 78% (Green-Call) in Chuncheon and 84% (Kowinearly) and 71% (Green-Call) in Wonju compared to Gangneung as the standard region. Thus, we suggest that Chuncheon and Wonju are the possible areas for cultivation of Italian ryegrass, considering that Gangneung was the optimum growing area in Gangwon Province.

This study was conducted to monitor the residual pesticides on red pepper powder produced in five regions, which are the major producers of red pepper in Korea, such as Ham-pyeong, An-dong, Yeong-yang, Yeong-gwang, and Cheongyang from 2015 to 2016. Residual pesticides were detected on all samples. Among the 286 pesticides tested, 58 pesticides were detected, with the most frequently detected being chlorfenapyr (93.7%). Twelve types of pesticides (chlorfenapyr, cypermethrin, chlorpyrifos, pyraclostrobin, cyhalothrin, tebuconazole, bifenthrin, deltamethrin, fenvalerate, lufenuron, azoxystrobin, and indoxacarb) were detected in all regions, and 14 types of pesticides were used only in certain regions. An analysis of the residual pesticides showed that none of the pesticides detected exceeded the MRL (Maximum Residue Limits). The Positive List System (PLS) requirements were applied to eight pesticides that had no set MRLs. 0.01 mg/kg (PLS requirements) was exceeded in 12 cases. A comparison of the estimated daily intake (EDI) of pesticides with the acceptable daily intake (ADI) to access their risk revealed %ADI values of 0.001-0.756. Carbofuran showed the highest (0.756%), but most pesticides were below 1%. The results show that residual pesticides in red pepper powder are at safe levels.

The field experiment was carried out to evaluate changes of dry matter productivity and feed value of Italian ryegrass and triticale at different growth stages in Wonju from 2018 to 2019. Italian ryegrass and triticale forages were harvested at an interval of seven days from May to June. The dry matter yield of Italian ryegrass with 7,870 kg/ha harvested on May 16 was significantly higher than that harvested on May 3 and May 9. The dry matter yield of triticale with 12,050 kg/ha harvested on June 7 was significantly higher than that harvested from May 3 to May 16. The crude protein yields harvested on May 16 were 890 kg/ha for Italian ryegrass and 1,103 kg/ha for triticale and were significantly higher than those harvested on May 3 and May 9. The total digestible nutrient yield(TDN) of Italian ryegrass with 5,223 kg/ha harvested on May 16 was significantly higher than that harvested on May 3 and May 9. The total digestible nutrient yield of triticale with 8,277 kg/ha harvested on June 7 was significantly higher than that harvested during May, but not different from that harvested after June 7. Considering the dry matter yield, crude protein yield and total digestible nutrient yield, it is suggested that the optimal harvesting times for Italian ryegrass and triticale seem to be May 16 and June 7, respectively.

In this study, the nutritional components (moisture, fat, protein, ash) value of military hardtack was collected and analyzed to control the mixing ratio of rice and flour. Hardtack from 4 factories was analyzed by 3 testing organizations certified by the Korean Ministry Food and Drug Safety. In addition, the accuracy and collaborative study possibility of each organization were evaluated in Q-test and HorRat. Also, other hardtack groups with different mixing ratios were compared to quality control of hardtack by I-MR charts. As a result, the HorRat and Q-test values of test organizations were 0.5-6.2 and 0.08-0.91, respectively. The quality of hardtack by the factories was similar. However, for accurate management of the mixing ratio, suggesting both upper and lower limit requirements of the nutritional components is necessary.