• 한국초지조사료학회지
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• 제41권3호
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• pp.205-209
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• 2021

Barnyard millet (Echinochloa esculenta) can be processed through soiling, hay, and silage, depending on the weather conditions during harvesting. However, research on barnyard millet is insufficient, and standards for cultivar, seeding density, and fertilizers have not been established. This study was conducted to examine the effects of seeding density and seeding methods on dry matter yields. For this, we used the early-maturing (Shirohie millet) variety of the barnyard millet. The experimental design included different seeding density (10 kg/ha, 15 kg/ha, 20 kg/ha (standard seeding density), 25 kg/ha and 30 kg/ha), and different methods of seeding (drill seeding and broadcast seeding). The seeding date was May 13, 2021, and the harvest date was July 13, 2021. Harvesting was carried out when the heading reached 40 %. Lodging occurred at 5, 9 and 7 at 20, 25 and 30 kg/ha densities in the broadcast seeding, but not in the drill seeding. With decreasing density of seeding, tillage number showed an increasing trend in both drill seeding and broadcast seeding (p>0.05). The plant heights were comparable in both drill seeding and broadcast seeding (p>0.05). The heading stage of barnyard millet was checked July 7 for drill seeding, and, on July 8 for broadcast seeding. It took 62 days, i.e., till July 13 for the heading to reach 40 % of the output. The dry matter yield of barnyard millet was significantly higher at the seeding density of 30 kg/ha, for both the methods of seeding (p<0.05). There was no difference in the chemical composition of grain, based on the seeding method and seeding density. However, as the seeding density increased, the CP, NDF, ADF, and TDN contents increased in both drill seeding and broadcast seeding. We found that, the dry matter content was the highest at the seeding density of 30 kg/ha for both the methods of seeding, but this was only 1.3 times higher than that of 10 kg/ha. Considering the seed price and labor force involved in seeding, it is advisable to have a seeding density of 15-20 kg/ha.

• 한국약용작물학회지
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• 제18권1호
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• pp.22-27
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• 2010

This study was carried out to investigate the physicochemical characteristics of 3-year-old ginseng (for Samgyetang product) cultured by various seeding density in direct-sowing culture. Ginsengs were cultured by the seeding density, 275, 300, 330 352 and 396 seeds per Kan, $180{\times}90cm$ area. Survived rate (82.1%) were the highest in plot of 352 seeds sowed, length and leaf width were high in plot of 300 and 352 seeds. Root yield grain was increased with increase of the seeding density in direct-sowing culture except 352 seeds sowed. Average root weight and diameter were the highest in plot of 352 seeds sowed, 31.6 g and 18.4 mm, respectively. Crude saponin and each ginsenosides content were the highest in plot of 275 seeds sowed. Rg1 content was decreased, Rc and Rb2 content were increased with increase of the seeding density. Total soluble sugar content was the highest in plot of 330 seeds sowed and the lowest in plot of 396 seeds sowed, and oligo- and disaccaride content were high in plot of 330 and 352 seeds sowed. Reological characteristics of ginsengs cultivated according to various seeding density, hardness and springness were high and maximum fracture force was low with decrease of the seeding quantity.

• Weed & Turfgrass Science
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• 제6권3호
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• pp.196-202
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• 2017

흑미를 이용한 무논점파 재배방법에 따른 입모, 수량, 품질특성 등을 구명하고 효과적인 잡초방제체계를 결정하여 재배안정화를 유도함으로써 흑미를 이용한 무논점파 재배의 보급 확대를 위한 기초자료를 제공하고자 수행하여 얻어진 결과는 다음과 같다. 흑미 무논점파 재배에서의 효과적인 잡초방제체계는 제초효과가 높고 약해에도 안전하였던 bromobutide thiobencarb (파종 전 5일) followed by bensulfuron mefenacet thiobencarb (파종 후 12일) 체계처리가 유리할 것으로 판단되었다. 파종시기 및 재식밀도에 따른 흑미의 입모수는 파종시기가 늦어지고 재식밀도가 높아질수록 증가하였으며 출수기는 파종시기가 늦어질수록 지연되었으나 재식밀도별로는 차이가 나타나지 않았다. 흑미의 가장 중요한 품질요소인 안토시안함량은 파종시기가 늦어지고 재식밀도가 낮아질수록 높아지는 경향이었으며 완전 착색 현미수량은 5월 30일과 6월 10일 파종 $3.3m^2$당 80주에서 이앙재배 대비 99% 수준으로 가장 높게 나타났다. 이상의 결과들을 종합해 보면 흑미를 이용하여 무논점파 재배를 할 경우 적정 재식밀도는 $3.3m^2$당 80주였고 중만생종 품종으로 사료맥류 후작인 6월 10일 파종까지는 수량감소가 거의 없어 안전하게 재배가 가능하며 식용맥류 후작인 6월 20일 파종에서는 중만생종 품종은 지양하고 조생종 품종을 선택하여야만 비교적 안전하게 재배가 가능할 것으로 판단되었다.

• 한국작물학회지
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• 제66권2호
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• pp.112-119
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• 2021

최근 벼 이앙 시 필요한 육묘상자 개수를 크게 절감할 수 있는 새로운 생력재배기술로 주목받고 있는 드문모심기의 안전 육묘기술을 개발하기 위해 육묘상자당 파종량 및 육묘일수에 등 육묘환경에 따른 모소질 변화를 분석한 결과는 다음과 같다. 1. 육묘일수 10일 시 파종량에 따라 엽수, 줄기두께가 변하였으며, 육묘일수 20일에는 초장, 엽수, 줄기두께가 유의적인 차이를 보였다. 2. 상자 당 파종량 증가에 따라 육묘일수에 따른 초장신장, 엽령증가정도 및 줄기두께 증가정도가 감소하는 경향이었다. 3. 상자 당 파종량 증가에 따라 줄기 건물중 및 뿌리 건물증이 감소하였으며 그 감소폭은 육묘일수 10일에 비해 20일에 크게 증가하였다. 4. 어린모의 줄기 건물중은 뿌리건물중, 초장 및 줄기두께와 높은 정의 상관관계를 보였으며, 상자 당 파종량 증가 시 모충실도는 낮아지며 육묘일수당 모충실도 감소량도 증가하는 경향이었다. 5. 드문모심기 시 육묘상자 절감의 효율증대를 위해 최소 묘취량을 설정하여 이앙 시 주당 3~5본을 이앙하기 위한 적정 파종개수는 11,000로 현미천리중이 22 g인 종자의 경우 약 280~300 g으로 판단되며 이 때 적정 육묘일수는 모충실도감소가 적은 13~16일로 판단된다.

• 한국초지조사료학회지
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• 제15권4호
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• pp.231-237
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• 1995

The objective of this study is to obtain the basic data for investigating the effects of organic reserves on winter survival or regrowth yield. Forage rape (Brassica napus L.) was sown by three seeding densities of 5, 15 and 25cm interval among plants on Sep. 1, 1994. Field-grown plants were sampled on the before wintering (Dec. 4) and on the wintering period (Jan. 16) to analyze the nitrogen and non-structural cahohydrate reserves. The rate of winter survival and regrowth yield were also measured in the spring of next year. The dry matter yields from the plots of 5, 15 and 25cm seeding interval were 1,270, 1.01 9 and 1,062 kg/lOa respectively, on the before wintering. The similar pattern wa5 observed in the crude protein yields affected by seeding density. On the before wintering, both of nitrogen and starch contents per plant significantly increased as the seeding density was lowered. Starch content was relatively higher than that of nitrogen in all plots. On the wintering period, the contents of nitrogen reserves were 6.5, 41.2 and 121.7 mglplant, those of starch reserves were 1.0, 5.4 and 185.1 mg/plant, respectively, in the plots of 5, 15 and 25cm seeding interval. Nitrogen reserves on the wintering period increased while starch reserves highly decreased in all plots comparing to the before wintering. 'lhe rates of winter survival were 10.2, 20.6 and 37.1%, and regrowth yields were 76, 96 and 178 kgD.M/ IOa, respectively, in the plots of 5, 15 and 25cm seeding interval. These results cleariy showed that seeding density have a close influence on the level of nitrogen and non-structurd cahohydrate reserves, and that the rate of winter survival and regrowth yield were controlled by reserves level on the wintering period.

• 생명과학회지
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• 제13권6호
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• pp.782-787
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• 2003

Perill(Perilla frutescens var. japonica $H_{ARA}$), “Ipdlkkae 1” was tested for the yield components in accordance with several different application levels, seeding methods and seeding dates. The results were summarized as follows: Application of fertilizer remarkably increased leaf number and leaf weight. Specially nitrogen showed the most significant effect. The best combination of NㆍPㆍK for cultivation of perilla was investigated ill three leveles of 6kg /10a, 9kg/10a, and 10kg/10a. The planting density in $10cm\times10cm/m^2$, and the seeding date on December 23 were found as the best results. However, $10cm\times7cm/m^2$ planting was better to get heavy leaf.Perill(Perilla frutescens var. japonica $H_{ARA}$), “Ipdlkkae 1” was tested for the yield components in accordance with several different application levels, seeding methods and seeding dates. The results were summarized as follows: Application of fertilizer remarkably increased leaf number and leaf weight. Specially nitrogen showed the most significant effect. The best combination of NㆍPㆍK for cultivation of perilla was investigated ill three leveles of 6kg /10a, 9kg/10a, and 10kg/10a. The planting density in $10cm\times10cm/m^2$, and the seeding date on December 23 were found as the best results. However, $10cm\times7cm/m^2$ planting was better to get heavy leaf.

• 한국작물학회지
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• 제24권3호
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• pp.43-50
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• 1979

본 시험은 맥후작으로 재배하는 경우 파종기와 재식밀도가 수량구성요소 및 수량에 미치는 영향을 알고저 실시하였는바 그 결과를 요약하면 다음과 같다. 1. 개화 및 성숙기는 파종기에 따라 차이가 있으나 재식밀도에 따르는 차이를 인정할 수 없으며 개화일수 및 결실일수는 파종기가 늦어짐에 따라 단축되었다. 2. 경장과 평균절간장은 파종기에 관계없이 밀식에서 증가하였다. 3. 분지수, 맥수, 입수 등은 개체별로 소식에서 증가하였다. 4. 수량구성요소인 분지수는 경태, 절수, 근수, 건물중과 협수는 분지수, 절수, 건물중, 엽면적과 정의 상관을 타나내었다. 5. 콩의 수량은 간작의 경우 휴폭 60cm에 주간 20cm가, 후작인 경우에는 휴폭 40cm에 주간 20cm에서 수량이 높았다.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1996년도 International Conference on Agricultural Machinery Engineering Proceedings
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• pp.987-995
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• 1996

The time components of the operations were investigated on the rice paddy field operations by radio controlled helicopter. The net time of operations, seeding and application, were less than a quarter of the required total time in the field of 1 ha. The most interesting is how to decrease the time of hop-off and landing. In this paper the seeding density itself is taken under a new look and its describing method is discussed. Voronoi diagram was introduced to consider individual plant of rice paddy. Extremely wide ranges of the distribution of seeding density are not supposed by the common indexes based on the concept of mean values and discussed on the aggregate of plants.

• 한국작물학회지
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• 제47권6호
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• pp.448-452
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• 2002

벼 자동화 육묘시설에서 파종기별 적정 파종량을 선정하기 위하여 실험한 결과를 요약하면 다음과 같다. 1. 파종기에 따른 묘특성은 상자당 파종량이 증가할수록 초장은 커지는 경향을 보였으나, 묘충실도는 감소하였다. 2. 이앙기별 파종량에 따른 본답 생육 특성은 파종기에 관계없이 파종량이 증가할수록 이앙 초기에는 초장은 커지고 분얼수는 증가하였으나 이앙 40-50일 이후부터는 파종량간에 큰 차이를 나타내지 않았다. 3. 파종량에 따른 수량성은 5월 25일 이앙구에서는 파종량 간에 유의성이 없이 200g 파종구에서 수량이 가장 높았으며, 2모작인 6월 20일 이앙의 경우는 200-250g 파종까지는 유의성이 없었으나, 200-250g 파종구와 300g 파종구에서는 유의성 있는 차이를 보였다.

• 환경생물
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• 제31권4호
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• pp.347-352
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• 2013

감태의 인공채묘시 유주자 및 유리배우체를 채묘하여 양성 생장도를 비교하므로써, 유리배우체의 대량양식 이용 가능성을 시험하였다. 2008년 11월에 유주자 및 유리배우체를 채묘한 채묘틀을 이용하여 2009년 5월부터 10월까지 전남 완도군 약산면 시험어장에서 양성 생장도를 비교하였다. 유주자 및 유리배우체 채묘 실험구에서 감태 엽체의 엽장과 생체량 등은 유의한 차이를 보이지 않았다.