• 생물환경조절학회지
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• 제21권1호
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• pp.57-65
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• 2012

본 연구에서는 시비 처리에 따른 생육상토의 화학적 특성, 생장 특성 및 생리적 특성 변화를 조사 분석하여 최소 시비량에 대한 최대 생장 효과와 적정 시비 방법 적용에 따른 환경오염의 최소화를 목적으로 연구를 실시하였다. 시비 처리에 따른 생육 상토의 화학적 특성은 유의적 차이를 보이지 않았다. 그러나 pH의 경우 유의적 차이를 보였는데 시비량이 적은 Exponential 처리구에서 산성도는 가장 낮고, 시비량이 높은 Constant와 Three stage 처리에서 산성도가 높아, 시비에 따른 산성화가 진행되었음을 짐작할 수 있다. 시비 처리에 따른 근원경과 간장 생장은 유의적 차이를 보이지 않았으며, 세 시비 처리구 모두에서 낙엽송 용기묘 규격 이상의 우수한 생장을 나타냈다. H/D율과 T/R율은 Exponential 처리구에서 가장 낮은 값을 보였으며, 반면 물질생산량과 묘목품질지수는 Constant 처리구가 높은 값을 나타냈다. 시비 처리에 따른 광화학 효율과 엽록소 함량은 Constant 처리구에서 높았지만, 세 처리구 모두 유의적 차이는 보이지 않았다. 본 연구 결과를 종합해 보면, 시비량을 생장에 따라 조절함으로써 시비량을 줄이면서 동시에 비슷한 생장 및 생리적 반응을 보임을 알 수 있었다. Exponential 처리구는 50% 시비량으로 생장, 묘목품질지수 및 생리적특성에서큰차이를 보이지 않았으며, 규격묘 생산이 가능했다. 이는 낙엽송 용기묘 100만본 생산 시 비료량을 약 200kg 이상 줄일 수 있는 것으로, 시설양묘과정에서 다른 시비 방법에 비해 경제적인 효과를 얻을 수 있음과 동시에 양묘장 토양 및 계류수의 오염을 줄이면서 비슷한 생장을 유지할 수 있다. 즉, Exponential 시비 방법은 생산 비용을 줄이면서 비슷한 생장 효과 얻어 경제적이면서 친환경적 시비방법이라 판단된다.

• 한국산림과학회지
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• 제101권2호
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• pp.324-332
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• 2012

이 연구는 시설양묘과정에서 요구되는 활엽수 수종별 적정 용기의 용적 및 생육밀도를 구명하고자 수행하였다. 용기 20혈(150본/$m^2$-400 mL), 24혈(200본/$m^2$-320 mL), 35혈(260본/$m^2$-240 mL)에서 거제수나무, 백합나무, 물푸레나무, 들메나무, 느티나무 및 참느릅나무 6 수종의 근원경, 간장, 물질생산량, 묘목품질지수 및 뿌리밀도를 조사 분석하였다. 용기에 따른 근원경, 간장, 물질생산량, 묘목품질지수 및 뿌리밀도는 6 수종 모두 용기 용적이 크고, 생육밀도가 낮은 20혈 용기에서 가장 높았다. 그러나 물푸레나무는 20혈과 24혈, 느티나무는 24혈과 35혈, 거제수나무는 세 용기 모두에서 유의적 차이는 없었다. 느티나무를 제외한 실험 대상 5 수종 모두 근원경, 간장, 물질생산량이 용기 용적과는 정의 상관관계, 생육밀도와는 부의 상관관계를 보였다. 이 결과를 바탕으로 양묘 단계에서 백합나무, 들메나무, 참느릅나무는 20혈, 물푸레나무는 20혈 또는 24혈, 느티나무는 24혈 또는 35혈, 거제수나무는 35혈의 용기가 적정 용기 크기로 판단된다. 수종별 적정 용기의 사용은 우량 묘목 생산이 가능하면서 경제적으로도 비용을 절감시킬 것으로 기대된다.

• 한국육종학회지
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• 제42권5호
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• pp.439-447
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• 2010

Riptortus clavatus, one of the many insects in major crops, damages pods and seeds, which reduces seed vigor and viability in soybeans. This study was conducted to examine the effect of diversely damaged seeds by R. clavatus on seed germination and seedling emergence and to determine the association of damaged seed with quality and yield of soybean sprouts. All seeds damaged by R. clavatus significantly (P<0.05) reduced seed vigor as measured by the rates of seed germination, germination speed, and seedling emergence. Mean seed germination rate of non-damaged seeds in sprout-soybean varieties was 97.8%, whereas the rates of seeds damaged at different levels, 31-50% and 51-80%, were 23.0 and 5.4%, respectively. The rates of seedling rot and abnormal, incomplete germination significantly (P<0.05) increased as the amount of seeds damaged by R. clavatus increased to 5, 10 and 15% against the total seeds for sprout production. Yield of soybean sprouts from seeds damaged at different levels decreased up to 13% as compared to that in normal seeds. In customer preferences on soybean sprout produce, 84% of customers participated in survey preferred to purchase sprouts from seeds with 5% of damaged seeds, but sprouts produced from seeds with 15% of damaged seeds were intended to purchase only by 22% of the customers. Areas of the seed damaged by R. clavatus were readily infected by pathogens as the seed germinated, resulted in deteriorated quality and reduced yield of sprout produce.

• 농업과학연구
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• 제46권1호
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• pp.93-102
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• 2019

The materials of artificial soils in the production process of container seedlings have a great influence on plant growth. Peat moss, vermiculite, and perlite have been used as major components of artificial soils for many years; however, they could decrease carbon fixation carried out by the soil and cause environmental problems such as a change in the water quality. Thus, environmental friendly materials to replace them must be developed. The purpose of this study was to verify the optimum additive materials of artificial soils and their mixed ratios for the growth and seedling quality index (SQI) of Quercus serrata. Rice husk, mushroom sawdust, and pine bark were each used as an additive material and mixed into the growth medium at 10% and 20% of the total volume. There was no significant difference in the height growth of Q. serrata. The 20% mushroom sawdust decreased the root collar diameter by 23.4% compared to the control. The total dry weight was highest with the 10% rice husk and was significantly lower by 10.3% for the 20% mushroom sawdust compared to the control. Additionally, the SQI for all the treatments showed no tendency to increase compared with the control. Thus, this study showed the possibility of recycling biomaterials from agriculture and forest for seedling production. This method could reduce environmental problems and help eco-friendly nurseries to achieve a carbon negative impact by the recycling of by-products.

• 고려인삼학회:학술대회논문집
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• 고려인삼학회 2002년도 학술대회지
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• pp.456-466
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• 2002

Wild ginseng production is increasing due to forest recovery for last 30 years. Total number of Symmani (traditional mountain ginseng digger) was 558 in 2001. Provincial distribution of Symmani in 2001 was highest in Kangwon $(32\%),$ next in Choongbook $(21\%)$ and least in Jeonnam $(0.7\%)$ and Kyoungnam $(0.9\%).$ Age distribution of Symmani was $33\%\;for\;fourties,\;32\%$ for fifties and $20\%$ for sixties. There were 8 persons in eighties. Symmanies are still keeping traditional ritual for mountain god serving clothes of colored ribbons and foods. Increased production induced open market system from underground dealing of mountain ginseng. Korea Mountain Ginseng Association established mountain ginseng assessment committee with professional Symmanies in 2001. From September to November in 2001, 987 roots were requested for quality assessment to the committee and 476 roots $(48\%)$ were passed and graded and others were rejected. Highest frequency of rejection was foreign origin. Pass rate was highest $(74\%)$ in Choongnam suggesting best place for quality. Number of collected roots in each province was positively correlated (p=0.05) with number of Symmanies. There are 3 quality groups of mountain ginseng, Heaven (pure natural), Earth (from seeding of wild ginseng) and Man (from seeding or seedling of wild ginseng with slight environmental modification). The relationship between price and age was polynomial in high quality root, Heaven, Earth and seed long head of Man group, and linear in low quality group, seedling long head of Man. The best one in 2001 was 26 g, 124 years old and sold with 109 million won. Quality criteria are age, shape, weight, color and healthy outlook. Fine roots are criteria for health status of roots and taproot is criteria for efficacy and called as medicine barrel. The implication is that ginsenosides have rarely been experienced for efficacy. The quality criteria of cultivated ginseng were originated from those of mountain ginseng. It is unique for mountain ginseng that only fresh one can be on market. Since quality criteria of mountain ginseng must be based on the efficacy experience it is well expected that present criteria might almost be established at the age of Shinnong Materia Medica.

• 한국약용작물학회지
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• 제5권1호
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• pp.1-6
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• 1997

토양수분(土壤水分) 부족(不足)이 토천궁(土川芎)(Ligusticum chuanxiong Hort.)의 수량(收量) 및 품질(品質)에 미치는 영향을 알아보고자 비가림 비닐하우스를 이용하여 우리나라 기상(氣象) 여건상(與件上) 한발(旱魃)이 자주 발생되는 유식물기(幼植物期), 개화기(開花期) 및 근경비대기(根莖肥大期)에 토양수분(土攘水分) 부족(不足)을 유발시킨 처리구와 전(全) 생육기간동안 포장용수량 수준으로 관수를 하여준 대조구를 두어 시험을 수행한 결과를 요약하면 다음과 같다. 1. 근경(根莖)의 수량(收量)은 대조구에 비해 근경비대기(根莖肥大期) 수분부족(水分不足) 처리시(處理時) 19.1%, 유식물기(幼植物期) 수분부족(水分不足) 처리시(處理時) 18.2%, 개화기(開花期) 수분부족(水分不足) 처리시(處理時) 17.6%가 각각(各各) 감소(減少)되어 근경비대기(根莖肥大期) 수분부족(水分不足) 처리시(處理時) 감소정도(減少程度)가 가장 컸다. 2. 상품율(商品率)(생근경(生根莖) 20g이상(以上) 비율(比率))은 유식물기(幼植物期) 수분부족(水分不足) 처리시(處理時) 85.0%, 개화기(開花期) 수분부족(水分不足) 처리시(處理時) 81.7%, 근경비대기(根莖肥大期) 수분부족(水分不足) 처리시(處理時) 78.3%, 대조구(對照區) 93.4%로 근경비대기(根莖肥大期) 수분부족(水分不足) 처리시(處理時) 가장 낮았으며, 엑스 함량은 대조구(對照區) > 근경비대기(根莖肥大期) > 개화기(開花期) > 유식물기(幼植物期) 수분부족(水分不足) 처리(處理)의 순으로 높았다. 3. 근경(根莖)의 수량(收量)은 세근(細根)의 수량(收量)과 유의적인 상관관계(相關關係)가 있었으며, 엑스함량은 줄기의 건물중(乾物重) 및 세근수량(細根收量)과 유의성 있는 상관관계(相關關係)가 인정되었다.

• 생물환경조절학회지
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• 제9권3호
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• pp.146-150
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• 2000

본 시험은 단고추 자루식 양액재배시 육묘일수에 따른 생육, 수량에 미치는 영향을 구명하고자 풋트당 2주로 하여 육묘일수 20일, 30일, 40일, 50일, 60일 처리구를 두고 재배를 요약하면 다음과 같다. 묘 소질은 육묘일수가 길수록 묘 생육이 좋았고 정식후 개화일 빨랐으나 평균 개화소요일수는 30일묘에서 48일로 가장 짧았고 다음으로 20일묘 순이었다. 뿌리활력은 20일과 30일묘에서 양호하였고 1차측근수는 30일묘가 1.5mm 이하 굵기의 뿌리수가 106.5개로 가장 많았으며 1차 측근장도 1,085cm로 가장 길었다. 정식후 생육은 엽중, 그중,경중 모두 30일묘에서 좋았으며, 수량은 수확초기에는 육묘일수가 긴 60일과 50일묘에서 수량이 많았으나 재배기간이 길어질수록 30일과 40일묘에서 수확량이 많았고 총수량도 많았다.

• 한국패류학회지
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• 제29권3호
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• pp.197-205
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• 2013

Even though seedling production of Haliotis discus hannai has fully developed, the culture of benthic diatom as a live food for larvae is still a barrier to solve in commercial hatchery. The farmer depends on mixed microalgae which are non-selectively attached on the plate by flowing of natural seawater. The adequate diatom on the plate for the larvae in terms of quality and quantity is always significant bottleneck in the hatchery. In this study, two benthic diatom species, Caloneis schroederi and Rhaphoneis sp. were separately cultured in mass and inoculated to four tons' settlement tank of the larvae. And the larvae and the spats were cultured for nineteen and nine weeks, respectively. The result on seedling production of H. discus hannai with this method was compared to that of the farmer's traditional method as a control. With regard to variation of species composition of benthic diatom on the plate, C. schroederi and Rhaphoneis sp. were dominant for first three weeks after inoculation. But the diverse diatoms mainly, Navicula, Amphora, Cylindrotheca, Licmophora, Pleurosigma began to attache on the plate from the 4th week. The larvae attached 2.5 times more in C. schroederi tank than in the control tank. The final total biomass of the seeds in Rhaphoneis sp. tank was 3.2 times more than that of the control tank. The retared-spats in the seedling production also showed significantly higher growth and survival in the spat fed Rhaphoneis sp. or C. schroederi than those in the control group. We suggest that C. schroederi is proper for settlement of the larvae and Rhaphoneis sp. is appropriate for the growth of the larvae and spats in the commercial hatchery of H. discus hannai.

• 원예과학기술지
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• 제34권5호
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• pp.719-726
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• 2016

본 연구에서는 고온 및 저온의 육묘 온도가 파프리카 묘의 소질 및 정식 후 초기 생육에 미치는 영향을 알아보았다. 육묘 온도는 다용되고 있는 $23^{\circ}C$를 대조구로 하여 고온을 $31^{\circ}C$, 저온을 $15^{\circ}C$로 처리하였다. 육묘 온도에 따라 자란 묘의 초장, 줄기직경, 생체중, 건물중, 엽수, 엽면적 등은 $15^{\circ}C$와 $31^{\circ}C$ 처리구에서 대조구보다 유의하게 낮았다. 그리고 그 묘들의 정식 4주 후 식물체 특성에서도 같은 경향을 나타내었다. 대조구 대비 $15^{\circ}C$와 $31^{\circ}C$ 처리구의 단위 시간 당 건물중 및 엽면적의 증가 속도는 육묘 기간보다 정식 후에 크게 높아졌다. 정식 후 4주 간 자란 $15^{\circ}C$와 $31^{\circ}C$ 처리구의 식물체의 작물생장속도와 엽면적지수는 대조구와 유의한 차이를 나타내지 않았고, 상대생장율과 순동화율은 유의하게 높았다. 이러한 $15^{\circ}C$처리구의 정식 후 생장 속도 및 순동화율의 증가는 정식 후 정식 전에 비해 크게 높아진 광합성 능력에서 기인하였다. 이상의 결과를 요약하면, 파프리카의 저온 및 고온 육묘온도는 묘 및 정식 후 식물체의 생육을 저하시켰다. 그리고 정식 후의 식물체의 회복 속도는 $31^{\circ}C$보다 $15^{\circ}C$에서 육묘된 묘에서 빨랐다.

• 한국환경과학회지
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• 제27권10호
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• pp.821-829
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• 2018

This study was conducted to examine the influence of Light-Emitting Diode (LED) light quality in urban agricultural plant factories on the growth and development of Seolhyang strawberry daughter plants in order to improve the efficiency of daughter plant growth and urban agriculture. LED light quality by demonstrated that above-ground growth and development were greatest for daughter plant 2. Daughter plant 1 showed the next highest growth and development, followed by daughter plant 3. Among the different qualities of LED light, the stem was thickest and growth rate of leaves was highest for R + B III (LED quality: red 660 nm + blue 450 nm/photosynthetic photon flux density (PPFD): $241-243{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$) and lowest for R (red $660nm/115-117{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$). Plant height, leaf width, petiole length, and the leaf growth rate were highest for W (white fluorescent lamp/$241-243{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$) and lowest for R + B I (red 660nm+blue 450nm/$80-82{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$). For above-ground growth and development, as the plants surpassed the seedling age, mixed light (red + blue), rather than monochromatic light (red or blue), and higher PPFD values tended to increase development. Regarding the quality of the LED light, daughter plant 2 showed the highest chlorophyll content, followed by daughter plant 1, and daughter plant 3 showed the least chlorophyll content. When the wavelength was monochromatic, chlorophyll content increased, compared to that when PPFD values were increased. Mixed light vitality was highest in daughter plant 2, followed by 1, and 3, showed increased photosynthesis when PPFD values were high with mixed light, in contrast to the results observed for chlorophyll content.