• Korean Journal of Organic Agriculture
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• v.24 no.4
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• pp.919-929
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• 2016

This study investigated the effect of organic materials (Bordeaux, Loess-sulfur) and the removal of apical shoot against downy mildew disease on cucumber cultivated in greenhouse. Five kinds of Bordeaux were made by adjusting mixing ratio of lime and copper sulfate in order to elucidate the optimal combination. The 4-6type Bordeaux was selected as the most effective combination for controlling cucumber downy mildew. Loess-sulfur showed inhibitory activity against cucumber downey mildew, but it was less effective than Bordeaux. It was confirmed that apical shoot cutting could reduce the incidence of cucumber downy mildew disease by 56.3%. When apical shoots of susceptible cucumber variety were cut at different leaf stages, disease incidence by early apical shoot cutting treatment was lower than that of late apical shoot cutting treatment. However in a resistant variety, 'Heukryungsamcheok', disease incidences of all cucumber apical shoot cutting treatments were lower than that of non-cutting treatment, but there was no differences between apical shoot cutting treatments due to low disease incidences. In addition, when organic materials and apical shoot cutting treatment were carried out in parallel, the combined treatments of organic materials and apical shoot cutting showed low disease incidence of cucumber downy mildew compared to untreated control. The lowest disease incidence of cucumber downy mildew was recorded in the combined treatment of 4-6type Bordeaux and apical shoot cutting. This study confirmed that apical shoot cutting can reduce the disease incidence of cucumber downy mildew and the combined treatment of apical shoot cutting and organic materials showed higher suppressive effect against cucumber downy mildew.

• Journal of the Korean Society of Environmental Restoration Technology
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• v.15 no.1
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• pp.53-62
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• 2012

Culm cutting is very effective and convenient method for asexual propagation and even much less destructive than the other ways such as excavation of rhizomes. Despite that culm cutting is such a useful method, only few investigations for raising its efficiency have been carried out. We tried to examine the effect of different geographical populations and cutting sections on the shoot emergence, biomass production and its allocation in terms of cutting efficiency. Culms were sampled from three environmentally distinct wetlands : riparian marsh, salt marsh and montane fen and then they were cut separately into four sections from the bottom to the top part. Both factors of different population and section affected the shoot emergence together. Middle parts on the culm always showed more shoot emergence irrespective of different population. On the other hand, first section from salt marsh and fourth section from the montane fen did not exhibit any shoot emergence. Significant difference in increase of shoot emergence between different sections during investigation period was confirmed only from salt marsh population. Not only different population but also appropriate cutting section should be considered together for better efficiency in cutting of reed culms.

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

• Asian Journal of Turfgrass Science
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• v.5 no.2
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• pp.75-80
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• 1991

The purpose of this experiment was in order to detect the effect of cutting height on the growth and thatch accumulation in Zoysio japonica Cutting height treatments were 2.5, 3.8, 5.1cm and no cutting, respectively. The results were obtained as follows : 1.Cutting treatments great]y affected to the growth of Zoysia japonica and thatch accumulation. 2.The dry weight of Leaf and shoot had the highest at 5.1cm. So 5.1cm treatment was desirable level for the top growth of Zoysia japonica 3.The dry weight of leaf, shoot, root and coverage of control were obtained the higher than cutting treatments. 4.The dry weight of thatch of control were less than cutting treatments, and 5.1cm treatment were more than tow cutting height. 5.Retationships of dry weight of thatch with thatch depth and C/F ratio were positive significant differences at 5% level. 6. Relationship between dry weight of shoot and coverage showed a positive significant difference at 5% level.

• Korean Journal of Ecology and Environment
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• v.37 no.2 s.107
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• pp.255-262
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• 2004

Growth patterns after the cutting and burning of Miscanthus sacchariflorus community were analyzed in the Woopo Wetland. Three replicates of 5 ${\times}$ 5 m plot of control, burning, and cutting treatments were established in April 2003 and changes of growth pattern were monitored by August 2003. In the control, burning, and cutting plots, a total of 7 families and 8 species, 14 families and 18 species, 6 families and 8species were observed respectively. Burning plot showed high diversity of flora. However, high diversity declined after July and all plots showed a similar species diversity. Vine plant, Humulus japonicus, dominated in the burning plots. Change of shoot density was highest in the early period in the burning plots (176/$m^2$) and shoot density in early May was almost double of the control and cutting plots. Toward to the end of active growth period (August), shoot density in cutting plot (170 ${\pm}\;7/m^2$)was higher than that of burning plots (141 ${\pm}\;9/m^2$). Shoot length of the cutting, burning, and control plot was 205 ${\pm}$ 15 cm, 190 ${\pm}$ 17 cm, and 187 ${\pm}$ 6 cm (n> 100) respectively. Above- ground biomass of cutting plots was higher than that of burning and control plots. Above- ground biomass of cutting plot was 1.6 times higher than the control while burning plot showed 1.4 times. This study indicted that cutting of Miscanthus sacchariflorus community increase shoot density development, length growth, and above- ground biomass.

• Journal of The Korean Society of Grassland and Forage Science
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• v.11 no.2
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• pp.90-96
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• 1991

This experiment was carried out in order to estimate the recovery days of root and stubble to the days after cutting, and contribution of specific stubble weight on the regrowth was examined using the relationships between the dry weight of shoot and yield components, and regrowth parameters by the days after cutting. The varieties examined were Maprima, Manhattan, Tove, Peramo, Caliente, Tempo and P-2 grown under individual plant basis. The results are may be summarized as follows: 1. Dry weight of root and stubble were recovered up to 13.5 and 11 days after cutting, respectively. 2. Dry weight of shoot(regrowth parts+stubble) was affected significantly by the varieties, stages of regrowth and variety x stage of regrowth. 3. The variety with tiller weight type showed higher average productivity of shoot than those of the variety with tiller number type. 4. Absolute growth rate(AGR) of shoot was correlated significantly with regrowth parts, stubble, root and weight of a tiller at the early stage of regrowth(up to 12 days after cutting), and correlated with regrowth parts, stubble, weight of tiller and stubble area at the late stage of regrowth(up to 20 days after cutting). 5. Contribution of specific stubble weight to absolute growth rate of shoot was different between the stages of regrowth. Thus, regrowth parts per specific stubble weight(RP1SSbW) and weight of tiller per specific stubble weight(WT1SSbW) contributed to absolute growth rate of shoot at the early stage of regrowth, and efficiency of specific stubble weight(ESSbW), regrowth parts per specific stubble weight (RPISSbW) and weight of a tiller per specific stubble weight(WT1SSbW) contributed to absolute growth rate of shoot at the late stage of regrowth. 6. Regrowth utilization rate(RUR) was one of the useful regrowth parameter to indicate the regrowth potential of grasses.

• Korean Journal of Plant Resources
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• v.11 no.3
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• pp.353-357
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• 1998

This study was conducted to determine the effect of growth regulators, genotype, and cutting position on the rooting and root growth from cutting of Chrysanthemum zawadskii H.. Rooting rate of Keungugeolcho in the treatement of IBA 500 and 1000 ppm was the better than those of other treatments of IAA, NAA and Rooton. Rooting rate differed depending on the genotype. Hangryobonggugeolcho was better than Keungucheolcho in rooting rate. The treatment of rooton remarkably induced many roots from the cuttings of eight accessions of Chrysanthemum zawadskii H.. Also, rooting rate and number of root differed depending on cutting position. When cuttings including shoot tip were cultured on tray containing bed soil, rooting rate and number of root induced from cuttings with shoot tip was higher than when cuttings without shoot tip and with lateral axillary bud were cultured.

• FLOWER RESEARCH JOURNAL
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• v.18 no.4
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• pp.244-250
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• 2010

This study was carried out to examine the effect of cutting condition on rooting and their subsequent growth of cut flower in plug cutting of 'Shinma', one of autumn-flowering chrysanthemums. According to the results, cutting with four or six leaves was effective in shoot growth and rooting than any other treatments, and also the length and thickness of cut flower were increased. In case of cutting with leafless, it showed the poorest shoot growth among all of the treatments and there was no root. The weight of shoot was heavier than any other treatments in case of the length of cutting (5~7 cm). And the weight of root and its number were better than any other treatments, in treatment of the length of cutting (5 cm). The growth of shoot and rooting were enhanced by increasing the thickness of cutting. In case of thickness of cutting, the cutting (3.2 mm tnickenss) showed more favorable shoot length of cut flower than any other treatment. Therefore, it is recommended that the 5 cm long and 3.2 mm thick cuttings with four leaves are used to improve their rooting and subsequent growth in plug cutting of Dendranthema grandiflorum 'Shinma'.

• FLOWER RESEARCH JOURNAL
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• v.17 no.4
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• pp.256-261
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• 2009

This study was carried out to examine the effects of cutting condition on the rooting and their subsequent growth of cut flower in plug cutting of summer-flowering chrysanthemum 'Iwanohakusen'. The more leaves were attached to the cutting, the higher shoot growth and rooting were. Shoot growth of cuttings was not affected by cutting length, but rooting was better in over 5 cm long cutting. Shoot growth was enhanced by increasing thickness of cutting, and 5.5 mm thick cutting was favored in rooting. When the many leaves were attached on the cutting, the length and weight of cut flower increased. Over 7 cm long cutting showed higher values in growth of cut flower and ray flower number. Cutting of 5.5 mm diameter showed more favorable growth of cut flower than the other treatments. Therefore, it is concluded that rooting of cutting and consecutive growth of cut flower was improved when 7 cm long and 5.5 mm diameter cutting with 4 leaves was used in plug cutting of chrysanthemum 'Iwanohakusen'.

• Korean Journal of Medicinal Crop Science
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• v.4 no.3
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• pp.241-246
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• 1996

This Experiment was conducted to know effect of cutting times and nitrogen split application rates on shoot and root-related characters of Atractylodes japonica. The cutting time was forced on none, once and twice along with three levels of nitrogen split application, all basic 50 -30 -20% and 40 -30 -30%. The plant height declined with increased cutting time and dry matter weight was increased with nitrogen split application under none and once cutting. Average yield of cutted shoot as edible wild plant was 257kg/10a at once cutting condition, but twice cutting condition was little and unfavorable to use edible wild plant because shoot was coarse. Yield 0 dry rhizome was the highest at once shoot cutting und­er 50 -30 -20% nitrogen split application by 471kg/10a.Especially, culture of Atractylodes japonka needed once shoot cutting one the 10th-30th of May.