• Horticultural Science & Technology
• /
• v.30 no.1
• /
• pp.13-20
• /
• 2012

This study was carried out to examine the effect of cutting condition on the growth of rooted cuttings and their subsequent growth of cut flower in plug cutting of Dendranthema grandiflorum 'Baekma'. The more leaves were attached to the cutting, the higher shoot growth of rooted cutting was observed. Cutting with two to six leaves was effective in shoot growth and rooting than any other treatment. Shoot growth of rooted cutting was not affected by cutting length, but rooting was better in 5 to 7 cm long cutting. Shoot growth and rooting of rooted cutting was promoted by increasing the cutting diameter, and rooting was better in 3.6-4.2 mm thick cutting than 3.1 mm thick cutting. As the treating concentration of NAA increased, shoot growth was inhibited and root length shortened in rooted cutting. Soaking with $100mg{\cdot}L^{-1}$ ${\alpha}$-naphtalene acetic acid (NAA) for 1 h was effective in shoot growth and rooting. Root growth such as root number, root length, and root weight was better in rooting medium mixed with 2:2 of peatmoss:perlite than the other treatments. When rooted cutting produced from cutting with four or six leaves was planted, better length, weight, and leaf number of cut flower was observed. In rooted cutting produced with 7-9 cm long cutting, growth of cut flower such as length, weight, and ray flower number was more effective than the others. Therefore, it is recommended that the 7 cm long and 3.6 mm thick cutting with four to six leaves is used to improve their rooting and subsequent growth of cut flower in plug cutting of Dendranthema grandiflorum 'Baekma'.

• Korean Journal of Organic Agriculture
• /
• v.11 no.2
• /
• pp.103-113
• /
• 2003

The chemical properties of oak tree wood vinegar and the effect of wood vinegar on the tomato seedling were investigated to apply wood vinegar efficiently to the organic - and natural farming system. On the basis of the results from chemical properties of the oak tree wood vinegar, mineral nutrient contents of wood vinegar was low. Therefore, wood vinegar could not be a suitable nutrient source for the plant growth at 500∼1000 times dilution level. which commonly used in the farming, if only wood vinegar is supplied for the nutrient source for the plant growth. The application of wood vinegar increased root growth up the 500 times dilution level while decreased shoot growth. Furthermore. the anion concentrations such as nitrate and phosphate of the plant were decreased by the application of wood vinegar while cation concentrations such as K. Ca. and Mg were increased. Phenolic compounds of wood vinegar such as chlorogenic acid and ferulic acid enhanced the root growth. Interestingly the application of ferulic acid increased both root and shoot growth at the level of 10$^{-4}$ M concentration. It indicated that the effect of wood vinegar on the production of healthy plant seedling may be due to the beneficial root growth by phenolic compounds such as chlorogenic acid and/or ferulic acid of the wood vinegar. However. the effect of the wood vinegar on the plant growth could be influenced by synergism or antagonism of different phenolic compounds in wood vinegar used. In addition. drench in the soil of wood vinegar may be more beneficial compared to foliar application for the improvement of root activity and plant growth.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.42 no.1
• /
• pp.89-94
• /
• 1997

The present study was conducted to know the growth and yield of in response to the drought stress at the different soybean growth stage. Drought stress was given to the soybean plants on early vegetative growth at fourth-node stage(FNS), mid-growth at beginning pod stage(BPS) and late growth at beginning seed stage(BSS) for 30 days, which are high availability in soil water stress on climate condition of Korea. Dry weight was decreased severely by water stress at FNS, and BPS and BSS has no difference compared to control. Chlorophyll content of leaf severely decreased at the end of water stress of FNS and BPS, but was recovered at the harvest stage. Drought-stressed root distributed mainly near the soil surface and number and dry weight of root nodule were decreased severely by drought stress at BPS. Number of pod, seed weight and yield were decreased by drought stress and showed the highest yield loss at BPS.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.51 no.3
• /
• pp.215-219
• /
• 2006

This study was conducted to find to change of component by different species, plant parts and growth stage of Paeonia lactiflora Pallas Among the species of peony, the contents of compounds was higher in cultivated peony (P. lactiflora P.) as compared with wild peony (P. japonica M., P. obobata M., P. anomala L.). Amount of methyl gallate was highest in 0.45% at Euisung jakyak. Amount of compounds in peony was the highest in 1.0% at paeoniflorin, followed by methyl gallate, astragalin and kaempferol in order. Contents of compounds with different growth stage were observed highest in April, and showed decreased trend in the later growth stage. Methyl gallate was present in 1.79% at petal, 0.56% at leaf and 0.01% at root, astragalin present at 0.27% at petal, 0.20% at leaf and 0.03% at root, and paeoniflorin present at 0.43% at petal, 1.09% at leaf and 2.52% at root.

• Korean Journal of Environment and Ecology
• /
• v.23 no.4
• /
• pp.302-308
• /
• 2009

For the proper tree management of Taxus cuspidata, distributed in the High 1 Ski Slope construction area in Baekwoonsan, Jeungsun-gun, Kangwon-do, the growing states of 323 trees(including transplanted 57trees) are investigated. Tree height, rootcollar diameter, D.B.H., stem condition, apical shoot, dead branch, needle growth condition, 2-year-old needle loss, root condition, tree form are investigated. Taxus cuspidata are mainly growing at the sites, high elevated mountain ridge or slopes facing north. Growing states of Taxus cuspidata, distributed in Baekwoonsan are relatively better than those of Taxus cuspidata and Abies koreana at other subalpine zone in Korea. Damaged trees are mainly due to root-removal through transplanting, root-damages by raising the ground level and digging. Several methods of Taxus cuspidata conservation were suggested.

• Korean Journal of Medicinal Crop Science
• /
• v.14 no.1
• /
• pp.19-22
• /
• 2006

Planting of peony, a perennial herb is usually planted in fall but the planting time can be postponed to next spring for other benefit such as land use, labour diversification and etc. This study was carried out to know the effect of planting time in spring on growth and yield of peony. Sprouting date in first year growth was earlier as planting time was later. Planting on March 10 showed best both top part and root growth and planting after that time resulted in worse growth. In planting on April 10, missing plant rate was 24% and accordingly root yield decreased to 43% comparing with that of March 10. Planting on March 10 resulted in thick and large number of root and so yield per l0a was 635 kg, the highest value among the other planting time in spring. The paeoniflorin content was not different significantly by planting time. These results suggested that March 10 was most appropriate for planting time in spring.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
• /
• v.6 no.9
• /
• pp.65-72
• /
• 1985

시설하에서 재배되는 채소류가 생육이 순조롭지 못하다던지 경엽은 생육하고 있더라도 착과되지 않거나 착과되더라도 모양이나 품질면에서 상품성이 낮은 것이 수확되는 경우가 많은데 그 원인으로는 병충해와 생리장해가 있다. 채소류가 생리장해를 일으키는 원인은 뿌리의 손상, 지상부가 생육이 불량하게되는 토양환경 및 비료조건의 불량, 지상부에 영향이 크게 나타나는 기상환경의 불량, 접목장해, 살균제, 살충제, 제초제, 생장조절 등의 살포에 의한 직접, 간접적 약해 등으로 나눌 수 있다. 이들 원인은 실제로는 서로 영향을 주어서 장해를 크게 하는 것이 많다. 또 장해는 주로 경엽이나 뿌리에 발생하고 장해가 심해지면 꽃이나 과실에 미치는 것과 꽃과 과실에만 나타내는 것이 있다. 우리나라에서 시설재배면적과 경제성이 크고 생리장해가 심한 오이와 토마토의 과실에 나타나는 생리장해를 중심으로 그 원인과 대책에 관해서 기술코저 한다.

• Proceedings of the Plant Resources Society of Korea Conference
• /
• 2002.11b
• /
• pp.27-27
• /
• 2002

식용피(Echinochloa crus-galli var. formosensis Ohwi.) 유묘에 대한 생육저해 정도를 지표로 하여 경북 북부지방에 자생하는 10여종의 야생식물의 부위별 MeOH 추출물을 조사한 결과, 1,000 ppm에서 가죽나무(가지)및 할미꽃(경엽부)은 식용피 유묘의 뿌리의 생육을 약 60∼80% 억제시키는 것으로 나타났다. 식물생장억제활성이 나타난 상기 2종에 대해 각종 크로마토그래피법을 적용하여 활성의 본체를 분리ㆍ정제한 결과, 가죽나무 가지 및 할미꽂 경엽부로부터 500 ppm에서 식용피 유묘 뿌리의 생육을 각각 96%와 73% 억제하는 활성분획들이 획득되었으며, GC/MS 분석을 통해 이들 활성분획으로부터 수종의 식물생장억제활성물질들이 확인되었다.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.26 no.3
• /
• pp.239-242
• /
• 1981

Soil stamping made plant type of barley prostrated root system developed well in deeper soil layer, the chlorophyll content of leaf high, ethylene production in leaf high and elongation of lower internode inhibited. Overall result was higher grain yield.

• Korean Journal of Medicinal Crop Science
• /
• v.4 no.4
• /
• pp.271-276
• /
• 1996

This studies were conducted to basic information on growth characteristics and root yield in progeny the derived from different bolting years and to establish optimum seed production time in Angelica gigas. Plant height of early and mid-growing stages had decreased with each year increase in bolting year, but showed no significance in late growing stage at different bolting years. Root charac­teristics including root length, root diameter and dry root weight was slightly good and it had high root/ shoot ratio in third year seed production. respectively. Bolting rate showed that first year seed 38.1%, second year seed 10.4% and third year seed 1.2%, respectively. Therefore, optimum seed production time revealed third year seed for reduce bolting rate. Root yield at different bolting years showed average 1,690kg per hectare as fresh root weight on first year seed, 2,860kg on second year and 2,940kg on third year seed, respectively. A significant positive correlation was appeared between bolting rate and plant height in mid-growing stage. On the other hard, there was highly significant negative correlation between bolting rate and root yield.