• 한국자원식물학회지
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• 제22권1호
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• pp.37-41
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• 2009

답리작 유휴 농지에 바이오 디젤의 원료인 유채의 다수확 재배법을 구명코자 시험하였던바 그 결과를 요약하면 다음과 같다. 50${\times}$20 cm 조파는 종실수량이 298 kg/10a인데 비하여 50${\times}$15 cm 점파구에서는 1.000 kg/10a의 표준 퇴비 시용구가 361 kg/10a로서 21% 증수였고 1.500 kg/10a의 퇴비 50% 증비구에서는 422 kg/10a로서 42%가 증수였으며 50${\times}$30 cm의 이식구에서는 1.000 kg/10a의 표준 퇴비 시용구가 392 kg/10a로 32% 증수였고 1.500 kg/10a의 퇴비 50% 증비구에서는 455 kg/10a로서 53%가 증수되어 가장 수량이 높았으며 바이오디젤 원료인 수유량에서도 50${\times}$30 cm 이식, 50% 퇴비 증시구에서 200 kg/10a로서 56%가 증수되어 가장 수유량이 높았다.

• Preventive Nutrition and Food Science
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• 제12권1호
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• pp.35-39
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• 2007

This study was conducted to investigate the effects of soil selenium (Se) supplementation level on Se contents of green tea and milk vetch. Four different concentrations of sodium selenite ($Na_2SeO_3$) solutions (0.0, 3.3, 33.0 and 165.0${\mu}g/mL$) were prepared and one liter of each solution was well mixed with 10 kg of compost (cowpea soil) to give four different levels of Se-containing soil: $T_1$, 0; $T_2$, 33; $T_3$, 330; $T_4$, and 1,650${\mu}g$/100 g soil. Green tea plants and milk vetch were individually cultivated in those soils for 60 days. Se contents of freeze-dried green tea leaves were 6.87, 10.40, 12.04, and 20.19 ${\mu}g/g$, respectively; all of which were significantly different (p<0.05) from the others except for $T_2$ and $T_3$. The results showed that Se-contents of green tea leaves were increased 1.5$\sim$2.9 times as the Se level in the soil increased. Regression equation between Se contents in green tea (Y) and soil Se supplementation level (X) was: Y=0.007X＋8.857. However, Se contents in the milk vetch were increased significantly (p<0.05) more with the same treatments $T_3$ (74 ${\mu}g/g$) and $T_4$ (187$\mu$g/g) in comparison to those at $T_1$ (5.0 ${\mu}g/g$) and $T_2$ (12.0$\mu$g/g). The increases ranged from approximately between 2.4 to 37.4 times that of the control group. Regression equation between Se contents in milk vetch (Y) and soil Se supplementation level (X) was: Y=0.1063X＋15.989. The large difference of Se contents between green tea leaves and milk vetch would be attributed by the difference of protein contents between the 30% or higher protein-content of legumes and 15$\sim$20% protein of shrubs. The present study clearly indicates that green tea leaves and milk vetch can be enriched in selenium by supplementing the soil with Se. Therefore, Se-enriched green tea or milk vetch powder could be utilized as functional foods in Se-fortified green tea drinks or salads, or as food additives to enhance the daily intake of Se.