• Proceedings of the Plant Resources Society of Korea Conference
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• 2018.10a
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• pp.76-76
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• 2018

최근 육성된 곰취 신품종 '쌈마니'의 고랭지와 평난지 다수확 재배를 위한 적정 재식거리를 구명하고 자 본 연구를 수행하였다. 재배지역은 표고가 해발 750 m인 고랭지와 해발 20 m인 평난지에서 하였으며, 재식거리는 $20{\times}20$, $20{\times}30$, $30{\times}30$, $35{\times}40$, $40{\times}40cm$ 등 5처리를 하고 난괴법 3반복으로 정식하고 노지에서 35% 차광재배를 하였다. 1년차 '쌈마니' 품종의 생육은 평난지보다 고랭지에서 컸으나 엽수는 고랭지보다는 평난지가 많게 나타났고, 재식거리간에는 $40{\times}40cm$구가 가장 많았고 재식거리가 넓을수록 많은 경향이었다. 그러나 주당 엽중은 평난지보다 고랭지가 더 높게 나타났다. 10a당 엽수는 고랭지보다 평난지가 많았으며, 재식거리가 좁을수록 많은 경향을 보였고, 평난지 $20{\times}20cm$ 재식구에서 543.5천매로 가장 많았다. 수량은 평난지보다 고랭지가 약간 많은 편이었으며 $20{\times}20cm$ 재식구에서 2,983 kg/10a로 가장 많았다. 2년차에도 생육은 고랭지가 컸으며 엽수와 엽중에서도 고랭지가 높게 나타났으며 수량에 있어서도 같은 경향이었다. 재식거리간에는 2지역 모두 재식거리가 좁은 $20{\times}20cm$ 재식구에서 높았는데 평난지는 3,369 kg/10a, 고랭지는 7,257 kg/10a로 나타났다. 3년차의 생육은 고랭지가 평난지보다 약간 좋은 편이나 큰 차이를 보이지 않았으며 경직경은 유사하였다. 그러나 주당 엽수와 엽중에 있어서는 고랭지보다는 평난지에서 많았으며 재식거리간에는 재식거리가 넓을수록 많아지는 경향을 보였다. 그러나 10a당 엽수와 수량을 보면 역시 고랭지보다 평난지가 많았으며 재식거리간에는 재식거리가 좁을수록 수량성이 높아 평난지 $20{\times}20cm$ 재식구에서 6,051 kg/10a로 가장 높게 나타났다. 3년간의 수량 변화를 보면 평난지는 3년차까지 계속 높아지나 고랭지에서는 2년차가 가장 많고 3년차에는 약간 떨어지는 경향을 보였다. 재식거리 간에는 2지역 모두 재식거리가 좁을수록 수량이 많고 잎의 크기는 작아지는 경향이었다.

• Korean Journal of Plant Resources
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• v.31 no.4
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• pp.378-383
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• 2018

This study was carried out to investigate the optimum cultivation distance for high yielding cultivation of the new variety of Gomchwi in highland and lowland. The test material was used 'Sammany' variety and the area was cultivated with a highland of 750 m above sea level and a lowland of 20 m above sea level. The planting distance was 5 treatments of $20{\times}20cm$, $20{\times}30cm$, $30{\times}30cm$, $35{\times}40cm$ and $40{\times}40cm$, and the plant was cultivated at 35% shading net in the open field. The annual growth of 'Sammany' variety was higher in the highland than in the lowland, but the number of leaves was higher in the lowland than that in the highland. The leaf number per plant was the highest in the $40{\times}40cm$ plot and the more the planting distance was, the more tendency was. However, the leaf weight per plant was higher in the highland than in the lowland. The number of leaves per 10a were higher in the lowland than that of highland and the tendency was more as the planting distance was narrower. Yields were slightly higher in the highland than that of lowland and the highest treatment plot was 2,983 kg/10a in $20{\times}20cm$. In the second year, the growth was high in the highland, and the highland was high in the leaf number and leaf weight and the same tendency in the yields. Among the planting distances, Yields in both areas were the highest in the $20{\times}20cm$ treatment, with 3,369 kg/10a in lowland and 7,257 kg/10a in highland. The growth of the third year was slightly better in the highland than that of the lowland but the difference was not significant. However, the number of leaves and leaf weight per plant were higher in the lowland than that of highland. And, in terms of leaf number and yield per 10a, it was also higher in the lowland than that in the highland. The narrower the planting distance was increased yields, and the highest yield was 6,051 kg/10a in $20{\times}20cm$. The lowland was high in yield until the third year, but the highland was the highest in the second year and decreased slightly in the third year. The narrower the planting distance in the both areas, the higher the yield, and the leaf size tended to be small.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.30 no.3
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• pp.252-258
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• 1985

An experiment was conducted at the Yeongnam Crop Experiment Station to obtain basic informations about cultural techniques for high yielding by manipulating plant spacing using two rice cultivars, Samgangbyeo (Indica/Japonica type) and Nakdongbyeo (Japonica type), and four plant spacings, 10${\times}$10cm, 20${\times}$20cm 30${\times}$30cm and 40${\times}$40cm, with 4 kinds of seedling number per hill, 1,3,5 and 7, respectively. High photosynthetic efficiency (Eu) exhibited at the Samgangbyeo compared to Nakdongbyeo regardless of plant spacings and seedling numbers. For Samgangbyeo, Eu value was the highest at the 20${\times}$20cm plant spacing and five seedlings and seven seedlings per hill showed high Eu values at 10${\times}$10cm plant spacing and 20${\times}$20cm plant spacing, respectively, while other plant spacings were not significantly differed among seedling numbers. For Nakdongbyeo, however, one seedling plot obtained high Eu value at the 10${\times}$10cm plant spacing while this Eu value increased as the seedling number per hill increased in other plant spacings. There was a high positive correlation between rice grain yield and total competition index for both cultivars while kind of relationships differed in these two cultivars; linear relationship for Samgangbyeo and exponential relationship for Nakdongbyeo, respectively. Competition index between rice hill was more significant than within rice hill for Samgangbyeo while both competition indexs were important for Nakdongbyeo to increase rice yield.

• Korean Journal of Plant Resources
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• v.19 no.1
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• pp.130-132
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• 2006

Objective of this study was conducted to determine the proper transplanting distance for turf cultivation in the bare land. For investigating the proper transplanting distance of turf cultivation, it were measured the growth characteristics as plant height, root length, number of branching, number of nodule and length of stolon, and yield properties such as fresh weight and dry matter. In $30{\times}30cm$ of transplanting distance plot, plant height, root length, number of branching, number of nodule and length of stolen were 14.1cm, 22.0cm, 7.0, 31 and 77.5cm, and also the fresh weight and dry matter were 16.1 and 11.0g/plant, respectively. It was observed that growth characteristics and yield properties were highest at $30{\times}30cm$ of transplanting distance, respectively. Therefore, it considered that the proper transplanting distance was $30{\times}30cm$ for turf cultivation in the bare soil.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.10a
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• pp.53-53
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• 2019

방울다다기양배추는 아직까지 국내에서는 소비자들에게 인지도가 낮은 작물이지만 최근 식생활 및 소비 패턴이 변화하면서 편의성, 차별성 등이 중요시면서 미니 과일, 미니채소류에 대한 관심이 증가하고 있다. 또한 외국의 도입 채소류에 대한 관심이 증가하면서 2013년 방울다다기양배추 수입량이 36톤이었던 것이 2015년에는 14.3배가 증가한 515톤으로 증가하였다. 이를 통해 방울다다기양배추가 가지고 있는 기능성과 미니채소에 대한 관심으로 지속적으로 소비가 증가할것으로 예상되고 있다. 이와같이 증가추세에 있는 방울다다기양배추의 수입을 대체하기 위해서는 국내 재배면적 확대가 필요하나 저온성 작물인 방울다다기양배추는 고온기 남부지역에서는 재배가 어려워 제주지역의 겨울재배 작형으로 제한되어 재배가 되고 있다. 따라서 제주지역의 겨울재배 작형과 연계하여 강원도 고랭지의 서늘한 여름 기후를 이용하여 단경기인 9~11월에 생산할 수 있는 여름재배 작형을 개발할 필요성이 있어 시험을 수행하였다. 본 시험은 2018년~2019년 태백 철암의 노지(표고 750 m)에서 시험품종은 "브릴리언트"를 이용하여 3월 하순 파종하여 50일 육묘하여 5월 10일 포장에 정식하였다. 흑색멀칭한 시험포장에 $80{\times}30cm$부터 $80{\times}60cm$까지 10 cm 간격으로 차이를 두고 정식하였으며 정식 전 N-P-K = 20-15-20 kg/10 a를 시비하였고 시험포장은 수확까지 병해충 방제 등 주기적으로 관리하면서 생육특성 및 수량성을 조사하였다. 재식거리별 생육상황을 비교한 결과 초장은 처리간 큰 차이가 없었고 경경은 재식거리가 커질수록 증가하는 경향이었다. 또한 엽장 및 엽폭은 처리간의 경향이 없었으며 엽수는 재식거리가 커질수록 증가하였고 $80{\times}30cm$ 처리시 80매내외였던 것이 $80{\times}50cm$ 이상일 경우 100매 이상으로 증가하였다. 재식거리별 구의 특성을 조사한 결과 구경은 처리간 큰 차이는 없었으나 재식거리가 커질수록 구경이 다소 증가하였으며 구중도 증가하는 경향이었다. 방울다다기양배추의 구의 엽수는 처리간 큰 차이가 없었고 경도 및 당도도 큰 차이가 없었다. 처리별 수량은 $80{\times}40cm$와 $80{\times}50cm$ 처리에서 수량이 다소 증가하였고 상품화율은 $80{\times}50{\sim}60cm$ 처리에서 80%이상으로 높았다. 따라서 방울다다기양배추의 여름 고랭지 재배시 재식거리는 $80{\times}50cm$ 처리시 생육 및 엽수 증가에 따른 구의 형성이 증가하여 수량성이 높아지고 상품화율도 증가하였다.

• Korean Journal of Medicinal Crop Science
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• v.7 no.2
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• pp.89-93
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• 1999

This study was carried out to investigate the effects of planting density, time and frequency of pinching on growth and yield of Lycium chinese Miller cultivated in vinyl house. This experiment was conducted at the experimental field of Cheong-yang Agriculture High School, Cheong-yang, Chung-nam province, in 1997 to 1998. The number of flowers, fruit setting number and dry weight of fruits per branch were increased as the spacings were wider, but the fruit yield per unit area was decreased up to the narrowest spacing plot of $60\;{\times}\;20cm$. The good results of growth status and fruit yield was obtained at the early pinching in May 5. As the more frequent pinching were treated, the more number of flowers and fruits per branch were produced, showing increase of fresh and dry yield, because of much more branches per plot.

• Korean Journal of Plant Resources
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• v.10 no.2
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• pp.159-164
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• 1997

Field experiment for two years was conducted at Ulleung island to determine the optimum planting date and density of Cnidium officinale Makino. Early planting(Mar. 20) showed the highest yield by 2,880kg per ha as dry wt. Planting time after Mar. 20 was decreased. Late planting had higher occurrence of diseases and insect damage. Early planting had higher extract contents than late planting without violation of the Korean crude drug regulation such as ash contents. Although plants grew better in lower density, they had fewer growing points per plant which actually determine the yield components. Planting density did not affected extract contents in Cnidium officinale Makino. High density planting($35\times15cm$)yielded 33% than those of lower planting density($45\times25cm$).

• Horticultural Science & Technology
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• v.32 no.2
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• pp.165-170
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• 2014

The objective of this study was to make growth and yield models of sowthistle (Ixeris dentata Nakai) by using an expolinear functional equation in a closed-type plant production system. The growth and yield of hydroponically-grown sowthistle were investigated under four different planting distances ($15{\times}10$, $15{\times}15$, $15{\times}20$, and $15{\times}25$ cm). Shoot dry weights per plant was the highest at $15{\times}25$ cm, but was the lowest at $15{\times}10$ cm. Shoot dry weights per area was the highest at $15{\times}15$ cm, but was the lowest at $15{\times}25$ cm. The optimum planting density and planting distance for yield of sowthistle were 44 plants/$m^2$ and $15{\times}15$ cm, respectively. Shoot dry weights per plant and per area were showed as an expolinear type functional equation. A linear relationship between shoot dry and fresh weights was observed to be linear regardless of the planting distance. Crop growth rate, relative growth rate and lost time in an expolinear functional equation showed quadratic function form. Radiation use efficiency of sowthistle was $4.3-6.1g{\cdot}MJ^{-1}$. The measured and estimated shoot dry weights showed a good agreement using days after transplanting as input data. It is concluded that the expolinear growth model can be a useful tool for quantifying the growth and yield of sowthistle in a closed-type plant production system.

• Korean Journal of Organic Agriculture
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• v.14 no.2
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• pp.179-189
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• 2006

After examining the difference in the photosynthesis rate of corn according to the planting distance, the distance of $40{\times}40cm$ showed the lowest rate by 23 days after transplanting (May 31); however, there was no significant difference in the photosynthesis rate due to increased salt tolerance in the plant as time went by. As for the difference in growth features of a plant, the planting distance of $40{\times}40cm$ showed a growing disorder due to the influence of salt by 23 days after trans-plantation (May 31); however, there was a desirable growth as time went by. For the difference in the salt content within a plant, the planting distance of $40{\times}40cm$ tended to be higher than other planting distances, and the K+ content is much higher than other kinds of salt after examining the difference in salt absorption. As for the correlation between saline components within a plant, there was a significant negative correlation among $K^{+},\;Ca^{2+},\;and\;Na^{+}$ while there was a significant positive correlation among $Mg^{2+},\;Ca^{2+}$, and Na+. After examining the effectiveness of salt removal from soil according to com cultivation, the planting distance of $30{\times}30cm$ showed a remarkable decrease by 37 days, compared with 23 days, after transplantation in $K^{+}$ by 28%, $Ca^{2+}$ by 36.6%, $Mg^{2+}$ by 30.6%, and $Na^{+}$ by 22.9%. And the salt content is higher in surface soil than in subsoil.

• Korean journal of applied entomology
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• v.19 no.4 s.45
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• pp.199-202
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• 1980

In order to investigate the relationship among the occurrence of bacterial leaf blight, amount of nitrogen application and planting density, a field experiment was carried out with factorial combinations of N levels (7.5, 15, 30kg/10a) and planting densities (10\times20,\;15\times30,\;20\times40cm). The results obtained in this study were; (1) The incidence of bacterial leaf blight was increased with increase of nitrogen application; (2) In double amount of nitrogen application (30kg/10a), the incidence of bacterial leaf blight was higher, regardless of planting density; (3) The incidence of bacterial leaf blight in Standard nitrogen application was significantly higher $(R=0.94^{**})$ than at $15\times30cm$ density and $20\times40cm$ planting density.