• Journal of the Korea Organic Resources Recycling Association
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• v.27 no.1
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• pp.5-14
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• 2019

The objective of this study was investigated the effect of organic fertilizer(OF) application on the grain yield, protein content, and soil chemical properties in rice cultivation to evaluate the replacement ratio of OF based on basal fertilization of inorganic(nitrogen) fertilizer, In case of soil 1 with optimum range of organic matter for rice growth, the grain yield of rice in 70% and 100% treatments of OF were higher than the other treatments. In soil 2 with higher than the optimum range of soil organic matter, the grain yield of rice of NPK, 30%, 70%, 100%, and 300% treatments of OF showed no significant difference. When the protein criteria of rice quality was below 7%, the treatment of 30%, 70%, and 100% using OF in soil 1 were satisfied with protein criteria of rice. In case of soil 1, ammonium nitrogen content, electrical conductivity, and the organic matter in 30%, 70%, 100%, 300% treatments of OF showed similar tendency to NPK treatment. These results suggested that the substitution ratio of OF 70~100% could be appropriate to increase the yield and commercial quality for rice.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.04a
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• pp.51-51
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• 2018

2015년 기준 우리나라의 고사리 재배면적은 3,276ha 수준으로 그중 전라북도의 고사리 재배는 재배면적 285ha이며 연간 생산량 1,985톤으로 전국 생산량의 21%를 차지하고 있어 전라북도의 산채 재배작목 중 중요한 비중을 차지하고 있다. 고사리(Ferns)는 고사리 속(Pteridium spp.)에 속하는 양치식물의 총칭으로서 우리나라에는 22과 70속 272종이 분포되어 있는 것으로 보고되었다. 고사리의 어린 순에는 가식부 100g 당 칼슘 15.0mg, 칼륨 185.0mg 등이 함유되어 있으며 골다공증, 심혈관질환 등에 효과가 있고 식이섬유로 인해 변비 예방에도 유용한 것으로 알려져 있다. 고사리 뿌리에서 추출한 전분은 중국 및 일본 등지에서 면류나 제과용으로 이용되고 있어 고사리 재배의 부가가치를 향상시킬 수 있을 것으로 기대되고 있다. 최근 인력 의존도가 상대적으로 적은 고사리 재배면적이 늘어나고 있는 추세이나 종근의 파종량에 대한 기준이 제시되지 않아 경영비 부담이 큰 실정이다. 본 연구는 고사리 종근의 파종량을 단위면적당 맹아수 기준 40~80개/$3.3m^2$ 범위에서 표고 500m의 허브시험장 연구포장에 3월 28일 정식한 후 고사리 신초의 특성 및 뿌리 전분의 특성에 대해 고찰하였다. 고사리 신초의 출현양상은 6월 26일 이후 빠르게 증가하여 7월 하순의 고온기에 완만해지는 경향을 보였고 누적 신초수는 맹아수 80개/$3.3m^2$ 파종구에서 80.5개를 보여 파종량을 높일수록 유의하게 증가하였다. 고사리 신초의 상품기준을 포자엽이 전개되지 않은 신초로서 신초장 15~20cm 범위로 정하는 경우 출현시기별로는 9월에 상품율이 높았고 종근 파종량간에는 유의한 차이가 없었다. 종근 파종량에 따른 단위면적당 뿌리 생산량은 70개/$3.3m^2$ 파종구와 80개/$3.3m^2$ 파종구에서 $1498.1g/m^2$와 $1490.3g/m^2$로 유의하게 많았으나 전분 추출 수율은 8.6~12.9% 수준을 보였고 파종량간에는 차이가 없었다. 단위면적당 전분 생산량은 80개/$3.3m^2$ 파종구에서 $176.2g/m^2$로 가장 높은 생산성을 보였으며, 고사리 전분의 호화특성에서 최고점도는 465.3RVU로 쌀 전분의 218.6 RVU에 비해 월등히 높았고 호화시간은 쌀 전분 6.0분에 비해 3.7분으로 짧은 특성을 보였다. 고사리 전분의 무기물 함향은 가식부 100g당 인산 20mg, 칼륨 47mg 수준으로 밀가루에 비해 낮았으나 칼슘은 밀가루 33mg과 대등한 32mg을 보였고 특히 철분에서는 밀가루 4mg 수준에 비해 31mg으로 높은 함량을 보여 밀가루의 철분을 보충할 수 있는 전분으로 유망하였다.

• Journal of the Korean Data and Information Science Society
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• v.11 no.1
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• pp.47-55
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• 2000

In oreder to predict the productions of major crops such as rice, barely, soybean and potato in Kyongsang Puk Do as early as possible, an attempt has been made to develop some prediction model of crop yields, using the data from the Statistical Yearbooks of Agriculture, Forestry and Fisheries from 1966 through 1999. Among the various models considered, $y=\exp({\beta}_{0}+{\beta}_{1}t+{\epsilon})$ was best fit to the planted area of the crops and $y=\exp({\beta}_{0}+{\beta}_{1}t^{1/2}+{\beta}_{2}t+{\sum}^{p}_{i=1}{\beta}_{i}+_2x_i+{\epsilon})$ to the yields. The $R^{2}$ values for the planted areas were $0.9180{\sim}0.9505$, implying good prediction, while that for rice was 0.7234 and those for barley, soybean and potato were $0.8855{\sim}0.9098$, Predictions have also been made for the planted areas upto the year 2005 and yield for the year 2000.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.39 no.5
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• pp.512-518
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• 1994

One of most laborious work in rice farming is transplanting of rice seedling which has been required preparation of nursury bed and care of seedling during one month period. In this research, direct seeding in dry paddy(DS) was practiced to compare with traditional tansplanting(TP) in Suwon and Milyang. Growth stages in DS were delayed as its planting time was about 36 days later than TP. Heading stage of DS at Suwon was delayed about 15 days as compared to transplanting culture. Rice yield in DS was decreased 8.2%(Suwon) and 0.11%(Milyang), repectively. Working-hour saving in DS was about 34.0%(Suwon) and 54.0%(Milyang). Production cost of DS was decreased 19%(Suwon) and 29% (Milyang), repectively. Amount of rice production per a unit working-hour in DS could incresed 37%(Suwon) and 113%(Milyang) compared to that of TP, respectively. Therefore, DS was decreased little in rice yield, but it could save working hour and production cost, significantly. Warm region like Milyang had more advantage in DS than Suwon. But, DS needs varietal selection for better emergence in low temperature, and more research in weed control and water management.

• Korean Journal of Food Science and Technology
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• v.22 no.6
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• pp.696-699
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• 1990

Some mixed culture systems consisting of koji molds and yeast were tested for the ethanol production by simultaneous saccharification and fermentation using polished rice as the substrate. Aspergillus shirousamii showed the highest ethanol production in the mixed culture with Saccharomyces cerevisiae on steamed rice added with 150 ml water in 250 ml Erlenmeyer flask. The optimum initial pH, temperature and specific surface for the ethanol production in this system were 6.5, $30^{\circ}C$, and 0.1, respectively. Under this condition, 12.9% ethanol was produced with inoculation with $5{\times}10^2$ conidia/ml of A. shirousamii and $5{\times}10^6\;cells/ml$ of S. cerevisiae in 10 days.

• Korean Journal of Microbiology
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• v.50 no.1
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• pp.46-52
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• 2014

This study was carried out to investigate the characteristics of fermented chinese yam and rice (Dioscorea japonica, Dioscorea batatas, Dioscorea opposita, Rice, FCYR) using Monascus sp. MK805. The extracts from FCYR were measured to examine pigments, antioxidant activities were investigated through DPPH radical scavenging activity, total polyphenol and flavonoid contents, reducing power. Also it was investigated monacolin K productivity by FCYR. Pigments productivity (yellow, orange and red) were 26.2, 13.9, 17.3 at Dioscorea japonica, 41.9, 22.6, 53.2 at Dioscorea batatas, 12.5, 7.5, 9.7 at Dioscorea opposita and 10.1, 7.7, 10.2 at rice, respectively. DPPH radical scavenging activity of FCYR was about 69.7, 79.6, 57.8, and 42.3%, total polyphenol contents of FCYR was about 480.6, 658.7, 379.3, and 212.9 mg/kg, total flavonoid contents of FCYR was about 342.5, 448.4, 235.2, and 168.7 mg/kg, reducing power of FCYR was about 1.57, 2.14, 1.14, and 0.35 (OD at 700 nm), respectively. And then monacolin K productivity of FCYR was about 453.8, 509.5, 332.2, and 263.2 mg/kg, respectively.

• Korean Journal of Environmental Agriculture
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• v.27 no.4
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• pp.373-381
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• 2008

To select of optimum rice species and germanium (Ge) application method for production of functional rice with Ge, the growth characteristics, Ge absorption and grain quality of rice plant were investigated under different rice species (Hopyungbyeo, Junambyeo, Ilmeebyeo and Dongjinbyeo) and Ge application method (soil application and foliar spray). The rice yield by soil application was higher in the order of Hopyungbyeo $\fallingdotseq$ Junambyeo > Ilmeebyeo >> Dongjinbyeo. On the other hand, the rice yield by foliar spray was higher in the order of Junambyeo >> Ilmeebyeo > Dongjinbyeo > Hopyungbyeo. The rice yield by soil application was higher than that by foliar spray regardless of rice species. For soil application, the Ge absorption in various parts of the rice was higher in the other of rice bran > brown rice > polished rice regardless of rice species. The Ge absorption of brown rice in Hopyungbyeo, Ilmeebyeo, Dongjinbyeo and Junambyeo by soil application was 14.5, 8.0, 11.6 and $10.4\;mg\;kg^{-1}$, respectively. In leaf, stem and root, the Ge absorption by foliar spray was higher than that by soil application, whereas, in rice bran, brown rice and polished rice, the Ge absorption by soil application was higher than that by foliar spray. The optimum rice species and Ge application method were demonstrated to be Hopyungbyeo and soil application, respectively, which provided suitable conditions for production of functional rice with Ge.

• Korean Journal of Agricultural and Forest Meteorology
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• v.20 no.2
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• pp.166-174
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• 2018

Potato(Solanum tuberosum L.) is one of the major food crop in the world following rice, wheat, and maize. It is thus important to project yield predict of potato under climate change conditions for assessment of food security. A crop growth modelling is widely used to simulate crop growth condition and total yield of various crops under a given climate condition. The decision support system for agrotechnology transfer (DSSAT) cropping system model, which was developed by U.S. which package integrating several models of 27 different crops, have been used to project crop yield for the impact assessment of climate change on crop production. In this study, we simulated potato yield using RCP 8.5 climate change scenario data, as inputs to the DSSAT model in five regions of Korea. The genetic coefficients of potato cultivar for 'superior', which is one of the most widely cultivated potato variety in Korea were determined. The GenCalc program, which is a submodule of the DSSAT package, was used to determine the genetic coefficients for the superior cultivar. The values of genetic coefficients were validated using results of 39 experiments performed over seven years in five regions. As a case study, the potato yield was projected that total yields of potato across five regions would increase by 26% in 2050s but decrease by 17% in 2090s, compared with 2010s. These results suggested that the needs for cultivation and irrigation technologies would be considerably large for planning and implementation of climate change adaptation for potato production in Korea.

• KOREAN POULTRY JOURNAL
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• v.40 no.1 s.459
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• pp.112-116
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• 2008

국제 곡물가격이 연일 급등세를 보이며 세계 곡물시장이 요동치고 있다. 10년 전인 1996년 엘리뇨 현상에 따른 지구촌의 기상이변으로 곡물파동을 겪은 바 있다. 10년 이상 지난 지금까지 일부 최빈국을 제외한 대다수의 국가가 곡물파동의 아픔을 잊고 행복한 시간을 보내지 않았나 하는 생각이 든다. 세계 경제가 미국을 중심으로 민주주의와 자본주의 경제가 주축을 이루며 경제적인 부, 즉 돈만 있으면 언제든지 쌀독에 쌀을 가득 채울 수 있었기 때문에 먹거리의 중요성에 대하여 소홀하며 살아온 것 같다. 그러나, 이제 더 이상 돈만 있다고 원하는 만큼 먹거리를 확보하기란 쉽지 않는 시대가 도래하고 있다. 작년 하반기부터 국제곡물가격은 가히 폭등이라고 할 만큼 큰 폭으로 상승하였는데, 문제는 과거처럼 단순히 기상악화에 따른 작황부진과는 차원이 다르다는 것이다. 지구촌 기상이변에 더불어 세계 경제성장에 따른 소비구조 변화와 이에 따른 수급불균형이 더욱 심화되고 있다는 것이다. 이에 금년도 세계 곡물산업 현황과 가격변동 흐름을 짚어보고 향후 사료원료를 중심으로 곡물수급 전망을 조명하고자 한다.

• Bulletin of Food Technology
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• v.12 no.1
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• pp.84-87
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• 1999

식품으로 사용된 미강유는 1994년 이래로 미국에서 상업적으로 생산되어 왔다. 다른 식물성 기름과 비슷한데도 불구하고 미강유가 niche 시장에서 특별한 기름으로 부각된 것은 몇 가지의 독특한 성질 때문이다. 미강유는 견과류와도 같은 향기가 매우 좋고 추출될 때는 튀김유로서 매우 안정적이다. 그러나 미강유의 가장 주목할만한 특징은 $ \gamma-oryzanol과 tocotrienols같은 nutraceutical value가 매우 높은 수준으로 함유되어 있다. 1997년 식물성유의 연간 세계 총생산은 약 8천4백만 톤으로 추정된다(USDA, 1998). 전세계 쌀 수확량으로부터 약 7백만 톤의 쌀겨기름을 생산할 수 있다. 이 양은 연간 총생산 식물성유의 약8%에 해당된다. 그러나 현재 연간 세계 미강유 생산이 80만 톤 미만으로서 모든 식물성유의 약1%로 추정된다 대규모 정미기가 갖추어져야만 실용적인 규모로 미강으로부터 기름을 추출하고 미강의 안정화 시스템 설비를 구비할 수 있다. 그러나 세계 미곡 생산량의 대부분이 소규모 정미기로 가공된다. 이러한 이유 때문에 가까운 장래에 전체 미강 생산의 50%이상으로부터 미강유를 생산할수 있을 것 같지는 않다.