• Journal of The Korean Society of Grassland and Forage Science
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• v.19 no.2
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• pp.155-158
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• 1999

Alfalfa grows wild in some parts of Korea, but specific information is lacking as to its growth characteristics, nutritive value and dry matter yeild. The objective of this study was to evaluate the usefulness of wild alfalfa(Medicago sativa L.) as a forage. Wild alfalfa and 'Vernal' were field sown at Keongsan, Keongbuk in the spring of 1995. Emergence for 'Vernal' was better than for wild alfalfa. It was observed that the flowering date of the wild alfalfa was delayed by 8 days. Regrowth of 'Vernal' was better than that of the wild alfalfa at each harvesting. After the last harvesting date, September 22, there was poor regrowth of the wild alfalfa, but regrowth of 'Vernal' was moderately vigorous growth. Weed infestation in the wild alfalfa plots was higher than in the 'Vernal' plots. Thle dry matter yields per hectare were significantly(P<0.05) higher for 'Vernal' than for the wild alfalfa. The CP content was slightly higher in the wild alfalfa in comparison to 'Vernal'. NDF and ADF contents were lower in the third cut, but they were not different in the 1st and 2nd cuttings.

• Journal of The Korean Society of Grassland and Forage Science
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• v.44 no.1
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• pp.6-13
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• 2024

This study was conducted to determine the optimal spring seeding dates for alfalfa yield and feed value. The experiment was conducted annually for three years (2021~2023) at the field in the Department of Animal Resources Development, NIAS, located in Cheonan. The treatments involved six seeding dates ranging from February 24 to April 14, with 10days intervals. Alfalfa was harvested four times a year at the early flowering stage. Dry matter yield showed a tendency to decrease with delayed the seeding date. However, depending on the climatidc condisions in the seeding year, the dry matter yield on March 14 or 24 was comparable to that on February 24. Annual dry matter yield varied, influenced by the daylight conditions each year. The average feed value did not significantly differ within in the same year with delayed seeding dates (p>0.05). Therefore, the most stable period for alfalfa spring seeding in the central area of South Korea is considered to be from February 24 to April 4, with February 24 indentified as the optimal date.

• Korean Deer Journal
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• no.21
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• pp.19-25
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• 1995

우리나라의 사슴에 공급되는 조사료는 대부분 중국산 갈잎건초, 옥수수 사일리지 및 일부 자가 생산된 조사료이다. 우리나라에서 녹용생산을 위해 사육되고 있는 사슴은 6개의 사슴아과중 진사슴아과(Cervinae)에 속하는 꽃사슴, 붉은사슴, 엘크, 다마 사슴들로 이들은 거친사료에 가장 잘 적응되어 있는 종류들이다. 특히 사슴은 타 동물과는 달리 난틴성분을 분해할 수 있는 능력이 있으므로 갈잎이나 어린새싹등을 소화하는데 잘 길들여져 있다. 그러나 우리나라에서 수입하고 있는 갈잎은 품질이 균일하지 못한 경우가 있고 사슴의 사육기간에 따라 고단백사료를 필요로 하므로 대체 사료의 개발이라는 측면에서 가격만 적당하다면 다양한 무기물과 미지성장인자가 많이 함유된 것으로 알려진 알팔파도 좋은 사료자원이 될 수 있을 것이다. 그러나 이러한 알팔파를 사슴사료로 이용하기 위해서는 섬유소와 에너지 단백질의 적정요구량을 결정하고 여러가지 가공알팔파를 적절히 이용하는 방법을 찾아내는 것이 필요하다. 따라서 여기에서는 1992년부터 1993년까지 카나다의 알버타 대학에서 실시한 사슴사료로써 알팔파의 효과와 각종 가공 알팔파의 올바른 이용방법에 대해 연구한 것을 발표하고자 한다.

• Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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• 1998.11a
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• pp.146-150
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• 1998

현재 세계적인 토양환경복원의 추세는 단기간의 높은 처리효율을 기대하는 장치위주의 복원기술적용에서 좀 더 처리시간은 걸리나 저비용의 효율적인 처리기술선택으로 옮겨가고 있다. 이는 지금까지 무리한 투자에서 발생한 부작용을 최소화하기 위해서 취해지고 있는 변화로 식물을 이용한 환경복원기술(phytoremediation)은 이러한 변화에 가장 잘 부응하는 발전 가능성이 매우 높은 미래 복원기술 가운데 하나이다. 이에 본 연구에서는 phytoremediation을 이용하여 디젤로 오염된 토양을 복원하고자 하였다. 먼저 대상오염물에 대한 정화능을 나타내는 식물을 선별하기 위해 알팔파, 옥수수, 피, 물피의 오염농도별 생장 률을 살핀 결과 알팔파가 오염농도에 따른 성장저해를 가장 덜 받는 것으로 나타났다. 이에 알팔파의 발아 test를 거친 후 실제상황을 모사하기 위한 column test를 실시하여 디젤의 제거효율을 살펴보았다. 1)외부로부터 pipe line을 따라 공기를 주입하여 산소를 보충한 처리구와 2)알팔파를 심은 처리구, 3)알팔파와 공기를 넣어준 처리구를 설계하여 디젤의 제거과정을 알아본 결과 제거효과가 가장 높은 처리구는 공기와 알팔파를 함께 넣어준 처리구였다. 이를 통해 유류로 오염된 토양에서 산소가 미생물활동에 커다란 제한요인이라는 것과 공정에 공기주입구를 장착함으로써 식물만으로 처리할 때 대두되는 시간적 제약의 문제를 다소 경감시킬 수 있음이 밝혀져 앞으로 이의 활용가능성이 주목된다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.40 no.5
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• pp.619-628
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• 1995

Crude aqueous extracts from dried leaves, stems, roots, and flowers from both field grown and greenhouse grown alfalfa plants inhibited alfalfa seed germination and seedling growth. The degree of inhibition was greater in the field grown plant extracts. Flowers extract of field grown plant most inhibited alfalfa germination and seedling growth. In the concentration study, the highest concentration of extract (9.0%, w/v) significantly inhibited total alfalfa seed germination by 50% as compared to control. In partitioning study using pot hydroponic culture of plant biomass into leaves, stems, root, LAR products of LWR and SLA exhibited significant variation among four species. This result support that the inhibitory effect of autotoxic substances presenting in alfalfa tissue may be possible interference with the patitioning of biomass into leaf component relative to the total biomass produced by the alfalfa plant. Toxicity of extract was not reduced by adding activated charcoal, Dowex-50W, amberlite to the extract. Toxic substances existing in most plant tissues but mainly above ground foliage are water soluble and stable and may persist in old alfalfa fields. Thus, it is recommended to remove as much as possible of the above growth parts, especially vegetative stage, before one tries to re-establish alfalfa in former field of alfalfa.

• Proceedings of the Korean Society of Grassland Science Conference
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• 1999.06a
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• pp.71.1-71
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• 1999

내열성 유전자 BcHSP17.6을 Agrobacterium을 매개로 하여 알팔파 캘러스에 감염 시킴으로서, 알팔파의 형질전환을 시도하였다. 알팔파 종자로부터 캘러스 유도를 위해서 소독한 종자를 SH-3 배지 (SH 배지에 2,4-D를 3mg/$\ell$ 농도로 첨가한 배지)에 치상하였으며, 28$^{\circ}C$ 암조건에서 20일간 배양하여 샘플로 사용할 캘러스를 유도하였다.(중략)

• Journal of the Korean Society of Food Science and Nutrition
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• v.41 no.1
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• pp.123-128
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• 2012

This study was conducted to investigate the quality characteristics of tofu (soybean curd) prepared with added alfalfa extracts (Medicago sativa L.). The moisture content, yield, and pH of tofu decreased according to the increase of an added quantity of alfalfa extract, whereas the crude protein and turbidity increased. The tofu made with additional alfalfa extracts gave a similar amount of crude ash with that of the control. The Hunter's L (lightness) color value decreased as the content of alfalfa extract increased, but the a (redness) and b (yellowness) values increased with increasing alfalfa extract concentration. Textural properties for hardness were higher but cohesiveness, springiness, gumminess, and brittleness were lower in alfalfa extracts with added tofu compared to those of control. Isoflavones such as daidzein and genistein content were significantly increased with increasing concentration of alfalfa extracts. A sensory evaluation indicated that the group with a 0.5% alfalfa extract showed the best color, flavor, taste, and overall acceptability results. In conclusion, adding alfalfa extracts could improve the physicochemical and sensory characteristics of tofu.

• Analytical Science and Technology
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• v.7 no.3
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• pp.403-411
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• 1994

To isolate, purity and identify of bioactive compounds involved in alfalfa allelopathy and/or autotoxicity, experiment was conducted. Isolation and separation procedures used from an 80% methanol extract of fresh alfalfa leaves(1kg), silica gel thin layer chromatography(TLC), followed by Droplet Counter Current Chromatography(DCCC). Preliminary identification was examined by high preformance lipid chromatography(HPLC). Four phenolic compound, salicylic acid, scopoletin, rutin, and quercetin, were identified and identified all compounds were phytotoxic to alfalfa seed germination and seedling growth. Among these compounds, quercetin treatment($10^{-3}M$) was most inhibitory to alfalfa seed germination and seedling growth. These compounds may be, at least in part, involved autotoxicity and allelopathy.

• Journal of The Korean Society of Grassland and Forage Science
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• v.43 no.2
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• pp.95-102
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• 2023

This study was to investigate the cultivation technique previously conducted cultivation research for the stable production of alfalfa and to present further research. The data used in the study were 270 alfalfa cultivation experimental data from 1983 to 2008, indicating the cultivation region, field type, variety, sowing, cutting frequency, fertilization, and dry matter yield (DMY). The average DMY of alfalfa in the Republic of Korea was 12,536 kg/ha, which differed greatly depending on the cultivated region. Most of the field type was cultivated in upland. In order to increase alfalfa production, it is necessary to use reclaimed and unused land, and research on the soil amendment matter to improve the soil condition is needed. Alfalfa varieties cultivated an amount of 53, but collected data no studies considered fall dormancy, the criteria for selecting alfalfa varieties, so further research is required. The fertilizer did not consider each component at various levels, and research is needed as the demand for fertilizer. In particular, research on potassium is needed considering the increase in alfalfa production. The alfalfa cutting frequency differed in the estimated pasture production period depending on the region, and the DMY tended to increase with increasing cutting frequency. This suggests that the alfalfa DMY can be increased according to the cutting frequency in the Republic of Korea, so research is needed to present the appropriate cutting frequency.

• Korean Journal of Weed Science
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• v.15 no.2
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• pp.121-130
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• 1995

Greenhouse and laboratory studies were conducted to investigate allelopathic potential of some weed species on alfalfa(Medicago sativa L.) germination and seedling growth. In the comparison between top(leaves+stems) and root extracts, top extract exhibited greater allelopathic effects on alfalfa germination than that of root. The various weed species extract differently responded to alfalfa test species, WL-320, in terms of allelopathic effect. Top and root aqueous extracts of lambsquarter(Chenopodium album L.), giant foxtail(Setaria faberii Herrm.), redroot pigweed (Amaranthus retroflexus L.), velvetleaf(Abutilon theophrasti Medic.), crabgrass(Digitaria sanguinalis L.), canada thistle(Cirsium arvense L.) and prostrate knotweed(Polygonium aviculare L.) significantly inhibited germination, seedling length, weight, vigor, and rate of germination of alfalfa. The regression slopes of various top extracts showed that velvetleaf(b=3.69) extracts were the most inhibitory, while large crabgrass(b=2.39) extracts had the least allelopathic effect on alfalfa germination. Germination, seedling length and weight of alfalfa were inversely proportional to the concentration of dried velvetleaf extracts. Also, more of the toxic effects were observed from the dried extracts compared to the fresh extracts. Residue of velvetleaf inhibited significantly alfalfa emergence and survival percentage compared to the control. The emergence and survival percentage of alfalfa were 44%, 57% at 1.0% residue treatment, respectively. When weed residues were mixed with silica sand with incubation time, velvetleaf residue most inhibited alfalfa growth. The degree of inhibition increased as incubation time increased. An incubation for 72h caused the greatest inhibition of alfalfa growth. These results demonstrate the different allelopathic activity of weed species extracts on alfalfa and suggest that weed may affect alfalfa growth and development through the inhibitory effects of allelochemicals present in weed tissue.