• 한국초지조사료학회지
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• 제12권1호
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• pp.59-66
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• 1992

본 시험은 봄 연맥(Avena sativa L.)에 대한 파종량및 질소시비수준이 생육특성, 사료가치 및 사초의 수량에 미치는 영향을 알아보고자 1987년 9월부터 11월 까지 약 2개월간에 걸쳐서 수행되었으며 그 결과를 요약하면 다음과 같다. 1. 출현솔은 파종량이 ha당 120,160 및 200kg으로 증가함에 따라서 93.4, 71.4 및 70.6%로 낮아졌다(P<0.01) 2. 분벽솔 발생은 파종량의 증가에 대하여 유의적인 감소가인정되어(P<0.05), ha당 파종량 120kg, 질소시비수준 200kg인 구가 3.3개로 가장많았던 반면 파종량이 200dkg으로 높아지면 2.1개로 낮아졌다.3. 엽폭은 파종량에 의해 영향을 받아서 파종량이 증가할수록 엽폭은 감소하였으며 (P<0.05), 엽신장은 파종량과 질소시비수준에 의해 유의성이 나타나지 않았고, 파종량이 낮을수록 엽신장은 약간 증가되는 경향만을 나타내었다. 4. 초장은 질소시비수준에 의해서는 영향을 받지 않았으나 파종량의 증가에 대하서는 유의성을 나타내어(P<0.05), 파종량이 높아질수록 초장은 깅어졌다.5.파종량이 낮고 질소시비량이높은 시험구가 조단백질 함량이 높게 나타났다.(P<0.05).질소시비효과가 커서 질소시비수준이 ha당 100,150,200kg으로 높아짐에 따라 19.3,20.2,및 21.4%로 조단백질 함량이 높아졌다. ADF와 NDF는 파종량과 질소시비수준에 따른 함량의 변화가 없었지만 MDF함량에서 파종량과 질소시비수준에 의한 상호작용만이 인정되었다. In vitro 건물소화솔은 파종량과 질소시비수준증가에 따라 높아지는 경향만을 나타냈다.6. 파종량이 120,160, 및 200kg/ha로 증가되면 건물수량도 ha당 3,197,3.583 및 3.713kg로 증가되었으나 질소시비수준에 따른 건물수량 증가는 그 효과가 인정되지 않았다.7. 조단백질수량은질소시비수준 증가에 의해서만 고도의 유의적 증가를 나타내어(P<0.01), 질소시비수준이 ha당 100,150,및 200kg일때 증가되었다.8. In virto 가상화건물수량은 파종량이나 질소시비량에 의하여 유의적으로 증가되지 않았다. 본 시험에서 얻어진 결과에 의하면 우리나라에서 청예리용을 위한 봄 연맥의 파종량은 연맥의 가을철 청예로서의 이용적 측면을 고려해 볼 때 ha 200kg 정도로 높여주고 질소시비수준은 ha당 100kg 정도가 적당하다고 생각된다.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.307-307
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• 2022

• 생명과학회지
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• 제11권2호
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• pp.166-172
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• 2001

Various types of the seeding of bottle gourd widely used as a rootstock of watermelon has been required to satisfy the farmers need. The study was done to determine the effect of light quality of blue, red and far-red lights treated with light emitting diodes on growth and morphology of bottle goured seeding and chlorophyll content of its cotyledons. The lights were treated in the growth chamber for 7 days to the seeding elapsed 8 days after sowing under natural condition, and 64 hole trays with commercial bedsoil. Plant height, length and diameter of hypocotyl, leaf area of cotyledon and first true leaf, its leaf length, number of true leaves, fraction and total dry weight were measured. Red light shortened and slenderized the hypocotyl, which lengthened by far-red light and thickened by blue light. Plant height was declined in order of far-red light treatment, blue and red lights mainly due to difference of hypocotyl length, Area and length of the first true leaf became smaller and shorter under far-red light than under the other lights. However, blue light increased leaf area of cotyledons. Two cultivars cv. Yongjadaemok and cv. Kunghap had different response to the light treatments in total seedling dry weight(dw); far-red and red light treatments showed the greatest and the least dw of hypocotyl, respectively, while blue and red lights did the greatest dw of the other organs. Among the ratio of each organ dw to total dw, those of hypocotyl and true leaves were different between the light treatments; the highest ratio of hypocotyl dw to total dw was observed in far-red light treatment but the lowest was in red light treatment. Those of the true leaves were the lowest in far-red light and similar response in blue or red light treatment. Chlorophyll content of cotyledons was decreased in order of red light treatment, blue and far-red lights, meaning that short period light treatment may influence photosynthesis of seeding and afterward its growth.

• 아시안잔디학회지
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• 제5권2호
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• pp.87-94
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• 1991

This study was carried out to determine the optimal seeding rate of Korean lawngrass in three different soil textures. The results obtained are summarized as follows;1.In early development, there were not significant differences in leaf length and width except for leaf width in mean seeding rates. And there was significant difference in tillering number. Tillering number of Korean lawngrass grown in sandy clay loam soil was more abudant than that grown in sandy clay and sandy loam soils.2.The rate of ground cover of Korean lawngrass grown in sandy clay loam soil was faster than that in other soils. The ground cover rate was faster in the following order: 15, 12, 10, 7, 5, 3 kg/10a. But in sandy clay loam soil, it was showed that the plot seeded at 12kg/10a be faster than that at l5kg/10a. Plots seeded from 5 to 15kg/10a in sandy clay loam soil and 15kg/10a in sandy clay soil were showed the 100% ground cover during the period of the year seeded.3.There were not significant differences in dry weight of each part measured at 11 and l4months after seeding. But there were significant differences in dry weight of shoot and total dry weight. Total and shoot dry weight of Korean lawngrass grown in sandy clay loam soil were heavier than that in others. 4.It was revealed that the optimal seeding rate in sandy clay loam soil was 12 kg/10a. But it was suggested that the optimal seeding time and rate in each soil textures be undertaken in future.

• Journal of Animal Science and Technology
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• 제63권5호
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• pp.1098-1113
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• 2021

Maturation process of alfalfa (Medicago sativa L.) could be prevented by the reduction of lignin content in terms of conventional breeding or transgenic technology. Alfalfa could exhibit higher leaf/stem ratio, with a concern of yield loss. The objective of this study was to compare forage yield and nutritive value of low lignin alfalfa and two reference varieties subjecting to two harvest intervals and three seeding rates. The experimental design was a randomized complete block in a split-split plot arrangement with four replicates, where harvest intervals (28-day and 35-day) were assigned to whole plots, seeding rates were subplots, and varieties were sub-subplots. The weighted mean nutritive value was applied to two production years of 2016 and 2017. Hi-Gest 360 (low lignin alfalfa) provided similar yield potential and increased nutritive value compared to two reference varieties. Over a two-year production period, alfalfa harvested at every 28-day interval provided more economic returns than those at 35-day interval. For the seeding year and first production year, five cuts made by the 28-day interval produced more yield than four cuts by the 35-day interval. Due to limited rainfall in May 2017, a sharp drop of the first cutting overturned the advantage of the five-cut system. Shorter intervals between harvests generally increased crude protein (CP) concentrations. The differences of relative feed value (RFV) between two harvest intervals tended to be great during the first and second cuttings. Overall, harvest interval had a large effect on nutritive value and a more significant effect on alfalfa dry matter yield than variety selection. Seeding rate did not affect alfalfa yield and nutritive value.

• 한국초지조사료학회지
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• 제4권1호
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• pp.51-61
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• 1983

본(本) 시험(試驗)은 혼파초지(混播草地)에 있어서 Italian ryegrass(Lolium multiflorum)의 파종비율(播種比率)과 예취빈도(刈取瀕度)가 첫번째 수확년도(收穫年度)의 목초(牧草) 총(總) 건물생산량(乾物生産量) 식생(植生) 구성비율(構成比率)에 미치는 영향(影響)을 구명(究明)하기 위(爲)하여 수행(遂行)되었다. Italian ryegrass의 파종량(播種量)을 10a 당(當) 0.3kg 및 1.0kg으로 하여 주구(主區)로 하였고 예취빈도(刈取頻度)를 년간(年間) 3, 4 및 5회(回)로 하여 세구(細區)로 한 분할구배치(分割區配置) 3반복(反復)으로 시험(試驗) 설계(設計)를 하였으며 1981년(年) 9월(月)부터 1982년(年) 8월(月)까지 12개월간(個月間) 시험(試驗)을 수행(遂行)하였던 결과 얻어진 성적을 요약(要約)하면 다음과 같다. 1. 혼파초지(混播草地)에 Italian ryegrass를 10a당(當) 0.3kg과 1.0kg을 조합(組合)했을때 수확(收穫) 첫 년도(年度)의 목초(牧草)의 총건물수량(總乾物收量) 0.3kg을 조합(組合)했을 때가 약간 높았으나 처리간(處理間)의 유의성(有意性)은 없었다. 2. 전(全) 시험기간(試驗期間)을 통(通)하여 목초(牧草)의 총(總) 건물수량(乾物收量)은 예취빈도(刈取頻度)를 자주 할수록 증가(增加) 되었으나 통계적(統計的) 유의성(有意性)은 없었다. 3. 잡초(雜草)의 발생(發生)은 Italian ryegrass를 10a 당(當) 1.0kg 파종(播種) 하였을때 현저히 감소 하였으며 초지조성시(草地造成時) 잡초발생(雜草發生) 억제에 Italian ryegrass의 파종(播種)이 유효하다고 사료(思料)된다. 4. Italian ryegrass의 총건물량(總乾物量)은 Italian ryegrass를 10a당(當) 1.0kg으로 파종(播種)하였을때 유의적(有意的)으로 높았고 orchardgrass와 ladino clover의 건물수량(乾物收量)은 다소(多少)낮았다. 5. 시험초기(試驗初期)에는 orchardgrass와 ladino clover의 식생구성비율(植生構成比率)이 Italian ryegrass의 파종량(播種量)이 높은 처리구(處理區)에서 감소(減少) 하였으나 시험(試驗) 종료시(終了時)에는 Italian ryegrass가 식생구성(植生構成) 비율(比率)에 큰 영향을 미치지 못하였다.

• 한국작물학회지
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• 제46권3호
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• pp.221-228
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• 2001

1. 현미를 상온저장시 2주까지는 발아율에 차이가 없으나, 저장 3주후부터는 발아율이 급격히 감소되어 발아율이 80%에 미치지 못하기 때문에 발아현미의 재배를 위해서는 도정후 2주 이내의 현미를 사용하는 것이 바람직한 것으로 판단되었다. 2. 24시간 침종처리가 무침종에 비하여 현미의 초기발아율이 약 2-3%증가되었고, $25^{\circ}C$는 현미의 발아율과 생육상태가 좋았을 뿐만 아니라 부패발생도 적었다. 3. 동결건조된 발아현미는 열풍건조된 발아현미와는 달리 호분층 및 내배유부분의 분리현상이 발생되었고, 배유의 전분 저장세포뿐만 아니라 전분립간의 균열현상이 관찰되었다. 4. 열풍건조는 동결건조 보다 유리하였고, 55$^{\circ}C$로 48시간 건조시 발아현미의 불쾌취가 제거되었다. 5. 조단백 및 amylose는 발아일수가 경과함에 따라 함량의 변화가 미미하였으나 조회분, 조섬유 및 유리당은 발아일수가 경과함에 따라 감소되었고, 조지방과 총아미노산의 함량은 증가하였다. 6. $\alpha$-amylase활력은 발아 5일부터 급격히 증가하다가 발아 8일부터 감소되는 경향이었다. 7. 유리당의 함량은 발아기간(0-8일)중 지속적으로 감소되는 경향이었으며 sucrose와 glucose의 감소가 현저하였고 발아 5일 이후 fructose와 maltose는 증가되었다.

• 한국잡초학회지
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• 제12권3호
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• pp.200-222
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• 1992

The results of recent researches for improvement of seedling stand in direct seeded rice on the dry paddy in Korea were summarized as the following ; a variety to be cultivated should be chosen the characteristics of high percentage germination under low temperature, shorter period of shoot emergence, and better growth of the mesocotyl and shoots. Meanwhile, there was 40% increase in seedling stand at the treatment of removal of the seed awn under using the drill seeder. After seeding the rice seed covered with soil of 3cm depth was better seedling emergence and also there was the hightest seedling emergence at the 70% of moisture content of the soil. In addition, the application of the Release containing GA 10% enabled to increase the seedling stand and furthermore it was effective under deep seeding depth. The optimum seeding date should be seeded around May 10 when mean air temperature is above 12-13$^{\circ}C$ so that may establish more less 70% in seedling stand. Based on an appropriate seedling stand of 150/$m^2$, the optimum seeding rate was 5kg/10a. It was the best in seeding method using drill seeder and the most desirable recommended seeding method was the drill seeder in terms of seedling stand. In order to improve seedling stand water management was more effective in canal irrigation and in drainage at 6hr after irrigation following by the seeding process. On the other hand, for the increase of seedling stand under flooded condition a variety might have characters being better germination at low concentration of dissolved oxygen and vertically deeper growing of the crown root. Also, seedling stand was able to increase with the seed coating of $CaO_2$in the flooded soil. It was possible to be seeded on the early part of May being mean air temperature of avove 10$^{\circ}C$ and the optimum seeding rate was 5kg/10a. For an effective water management water would be flooded up to 3cm depth for 2-3 weeks after seeding. The rice plant grown under the direct seeded cultivation might be not so much strong in lodging resistance compared to that grown under the transplanting and moreover direct seeded rice cultivation under flooded condition would be more weak growth of the rice plant than that on dry paddy. Meanwhile, the lodging would be affected by the seeding rate, the soil depth after seeding. and seeding method even in the same variety. In particular, roots in the lodging pattern of direct seeded rice cultivation under flooded condition were largely distributed on the soil surface so that resulted easily in the lodging. In general, the lodging resistance would be greater as seeding rate and amount of N fertilizer application are lower and soil depth after seeding is higher. Among the introduction of different seeding method the high ridged drill seeding method on dry paddy soil resulted in the lowest in the lodging index and also it was lower in the drill seeding method than in the scattering seeding method under flooded condition. In case of more than 150 seedlings per $m^2$ there was a severe lodging due to high lodging index at the 3rd and 4th internodes. The effective lodging prevention was able to at the treatment of the Inabenfide at 45 days before heading and the Uniconazol at 15 days before heading which caused the shortage by 10-15cm in culm length. Also, fertilizer management using split application of nitrogen would be contributed the reduction of lodging at the rate of 20-30-20-20-10%(basal-5th leaf stage-7th leaf stage-panicle initiation stage-heading stage) on the dry paddy soil.

• 유기물자원화
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• 제4권1호
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• pp.1-11
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• 1996

음식물 쓰레기의 고온 퇴비화 과정에서 종균 첨가가 미생물의 변화에 미치는 영향을 조사하였다. 실험실용 소형 퇴비화 장치에 선발한 고온성 세균, 효모 및 고온성 세균, 효모 복합종균을 첨가하여 $50^{\circ}C$에서 분해시키면서 고온성 세균과 효모의 생육 및 pH의 변화를 측정한 결과, 모든 실험구에서 효모가 우선적으로 생육하였으며 고온성 세균은 그보다 1일 또는 2일 후에 생육하였다. 종균으로 고온성 세균만 사용한 경우는 효과가 거의 없었으나 고온성 세균과 효모의 복합 종균을 첨가한 경우에는 고온성 세균의 생육이 현저히 촉진되었다. 특히 효모 종균을 단독으로 첨가한 경우에도 고온성 세균의 수가 반응 시작부터 급속히 증가하였다. 이러한 결과는 음식물 쓰레기의 분해시 고온성 세균의 증식에는 효모의 역할이 필수적인 것으로 나타났으며 그 이유는 효모가 세균의 생육을 저해하는 유기산을 제거하기 때문으로 밝혀졌다.

• 한국작물학회지
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• 제54권2호
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• pp.143-158
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• 2009

This experiment was carried out to examine ecological response and soybean quality as affected by environmental cultivation for producing high seed quality in domestic soybean variety. The results are as follows: Under equal cumulative temperature condition, soybean plants grown in Muju showed longer days to flowering, which was an effect of the long day-length on high latitudes, and longer duration of reproductive stage as a result of low temperature within that period. Considering apparent seed quality, 100 seed weight of soybeans grown in Muju was heavier than Miryang. Ratio of seed crack and disease-damaged seeds was lower in Muju, and these parameters decreases as planting was delayed. The protein contents did not show significant difference in terms of altitude and planting date, however, crude oil contents were higher in Miryang. An opposite trend was observed in C18:1 and C18:3. In the fatty acid composition, the proportion of C18:1 decreased as seeding date was delayed, and was higher in Miryang. Opposite observations were obtained from C18:3. The anthocyanin contents were highest on June 10 planting and higher in Muju than in Miryang. Isoflavone content was higher as seeding date was delayed and is similar accross seeding dates in Muju. As a summary, for high seed quality production the optimum planting date was June 10, and Muju was more suitable region than Miryang.