• Korean Journal of Medicinal Crop Science
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• v.19 no.4
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• pp.233-237
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• 2011

This study was carried out to investigate the seedling establishment and yield of direct-sown Platycodon grandiflorus seeds cultured by three ridge width, 0.4, 0.8, and 1.2 m and four mulching materials, rice straw, rice bran, black plastic film, and no mulching in upland. Seedling establishment rate (70%) was the highest in rice straw mulched plot of 500 seeds/$m^2$ sowed and root yield after one year was also the highest in rice straw mulched treatment and followed by rice bran, no mulching, and black plastic film treatment. In this result, ridge width 120cm and rice straw mulching combined treatment was best for getting the highest seedling establishment ratio and seedling numbers per area. However, ridge width and mulching materials should be considered soil moisture content and weed population for saving labor cost.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.44 no.2
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• pp.97-101
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• 1999

No-till direct seeding cultivation of rice has major advantages such as saving of labor and cost by eliminating tillage, preparation of seed bed and trans-planting procedure compared to the conventional transplanting cultivation. A field experiment was conducted to evaluate the effects of straw treatment and nitrogen levels on the rice growth in no-till direct-seeding cultivation. Rice straw, vetch straw, and the mixture of both of the straws were mulched on the surface of soil before seeding while 4 levels of nitrogen fertilizer, 0, 7, 9, and 11 kkg/10a respectively, were applied at 3 split times, 3-weeks after sowing, 5-weeks after sowing and the panicle initiation stage. Mulching of vetch straw significantly reduced seedling establishment of rice which may be attributed to low oxidation-reduction potential of soil by vetch mulching treatment. Vetch straw increased the concentration of soil ammonium leading to an extension of the greenish leaf to panicle initiation stage. Agronomic nitrogen use efficiency (AD $E_{N}$) in heavy-mixed straw mulching plots was lower than other treatments. Grain yield and AU $E_{N}$ in the vetch treatment were less affected by fertilized N levels. Conclusively, it is suggested that heavy straw mulching was not efficient for rice seedling establishment and nitrogen usage.e.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.23 no.2
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• pp.126-132
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• 1978

To examine the effects of P.E. film and rice straw mulching on fall grown potato(Shimabara cultivar) in the middle region of Korea, sprouted seed tuber pieces were transplanted with six kinds of mulching treatments on 24th July and harvested on 25th October. P.E. film mulching from transplanting resulted the perfect rot of transplanted seed pieces due to the excessive high soil temperature (noon soil temperature of about 4$0^{\circ}C$ continued until the middle of August). P.E. film mulching from 15th September to harvest increased the marketable tuber yields by 35% due to the raising of soil temperature by 1-3$^{\circ}C$ and maintaining of available soil moisture in dry season. Rice straw (whole or cut in 10cm length) mulching lowered the soil temperature in hot season and raised it in cool season and maintained available soil moisture in dry season. Therefore better emergence, growth and yields were induced. Effects of whole straw, whole growing season and thicker mulching were greater than cut straw, half growing season and thinner mulching. 6cm mulching of whole or cut straw during whole growing season resulted the increasing of marketable tuber yields by 56 or 48%.

• Korean Journal of Soil Science and Fertilizer
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• v.49 no.1
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• pp.12-16
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• 2016

To identify the effects of straw mulching on soil physicochemical properties in reclaimed saline soil, field experiment was conducted for 3 years (2010~2012) in Saemangeum reclaimed land. Soil series of the experimental field was Munpo and soil texture was fine sandy loam. The experiment was conducted at a field with EC of $2.4dS\;m^{-1}$ (field I) and the other field with EC of $5.6dS\;m^{-1}$ (field II). Each experimental field was treated with rye straw incorporation, mulching with rye straw and control. In 2010 rye straw produced from other field was used for the experiment and in 2011~2012 rye straw cultivated at the same experimental field was used. After rye straw application, soybean was cultivated. After 3 years field experiment, by rye straw incorporation, soil salinity decreased from $2.4dS\;m^{-1}$ to $0.6dS\;m^{-1}$ at field I but increased from $5.6dS\;m^{-1}$ to $7.6dS\;m^{-1}$ at field II. By mulching with rye straw soil salinity decreased from $2.4dS\;m^{-1}$ to $0.5dS\;m^{-1}$ at field I and also decreased from $5.6dS\;m^{-1}$ to $0.5dS\;m^{-1}$ at field II. By rye straw incorporation and mulching soil organic matter increased from $2g\;kg^{-1}$ to $4g\;kg^{-1}$. At field I yields of soybean were similar between rye straw incorporation and mulching but at field II yield of soybean increased apparently by mulching with rye straw compared to rye straw incorporation and control.

• Proceedings of the Ginseng society Conference
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• 1974.09a
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• pp.137-146
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• 1974

This experiment was on the purpose to study the effects of different shading of Mulching treatments on the quality and yield of ginseng root. This experiment were conducted at Mei-Feng for one year, from July, 1972 to July, 1973. The variety been used was introduced Korea Panax ginsvng. Three different Shading of Mulching treatments have been studied. The results were summerized as follows: 1. The growth of ginseng plant is good under around 4,300 Lux of light intensity. Fig . showed the shadow treatment of straw had a better effect than that of black or grey plastic film. The differences between treatments were significant. 2. The adequate soil temperature for ginseng culture was in the range of $16-18^{\circ}C$. Fig 2. showed that there were significant differences among treatments, of which the straw shadow treatment had the best effect. 3. The growth of ginseng plant was greatly affected wth various shadow treatments. Fig 1. showed both straw and black plastic film treatments had a better effects on growth of stem, leaf area and leaf numbers. 4. Fig. 2. 3. 4. 5 indicated there were distingished differences among all treatments. The straw and black plastics film mulching treatments had a better effects on root length, root diameter, root weight and leaf weight than the grey plastic film. 5. The amount of plant alkaloids and panacene content had related to the shadow treatment, as showed in Fig. 6 and 7 that straw shadow treatment had greatly increased the procuction of plant alkaloids and panacene content. 6. The quality and yield of roots of ginseng greatly affected by different shading of mulching treatments.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.38 no.2
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• pp.112-116
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• 1993

The experiment was carried out to investigate the influence of rhizome size and mulching materials on some agronomic characters and flower-head yield of Gingiber mioga ROSCOE. The larger the size of rhizome was, the more the number of leaves developed, and the higher the yield was. The most suitable rhizome size for planting was found to be from I2cm to 15cm. Rice straw and polyethylene film mulching materials increased the soil porosity and reduced change of the soil moisture content. The yield of flower-head was highest in the straw-mulching plot, indicating that straw would be the best mulching material for growth and yield of flower-head in Gingiber mioga ROSCE.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.41 no.5
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• pp.505-513
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• 1996

This study was conducted to investigate the variation of chemical components in stagnant water under different mulching amount of barley straw after combine harvesting and the effect of stagnent water on the germinatidn and seedling elongation at early growth stage in rice. pH was lower in barley straw mulching than non-mulching and decreased with increasing of mulched barley straw but was not different among treatments in stagnant water at 15 days after flooding. Dissolved oxygen decreased with the increasing of mulched barley straw and increased with the passing of time, while saline content increased with the increasing of mulched barley straw, showing significant difference among treatments, was peaked at 15 days after flooding and thereafter, decreased. NH4-N was higher 5 days after flooding with thicker barley straw mulching but was not different at 10 days. N $O_3$-N increased up to 10 to 15 days after flooding and increased with thicker barley straw mulching. Water soluble phosphorus and cation content ( $K^{+}$, $Ca^{2+}$, $Mg^{2+}$)were higher in thicker barley straw mulching and peaked at 10 and 15 days after flooding. Germination rate was decreased by thicker straw mulching and was high in order of medium late, medium and early maturing rice variety. Keumobyeo, Gancheokbyeo, Ilpumbyeo, Dongjinbyeo and Gyehwabyeo showed higher germination rate. Seedling elongation at early growth stage was poorer with increasing of barley. straw mulching. Ilpumbyeo had good seedling elongation in one time amount of barley straw mulching and Shinunbongbyeo, Unjangbyeo, Nonganbyeo and Dongjinbyeo had poorer, in two times.mes.

• Korean Journal of Organic Agriculture
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• v.21 no.3
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• pp.413-422
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• 2013

This experiment was conducted to clarify the effect of double layer mulching on reducing the labor required to weed control and Leaf sheath training of the garlic cultivation. Six mulching methods(non-mulching, transparent P.E., rice hull+transparent P.E., sawdust+transparent P.E., rice straw+transparent P.E., black P.E. film+ transparent P.E.) were used for the experiment, and transparent P.E film was removed on April 10. Weed occurrence was in the order of black P.E. film< transparent P.E

• Korean Journal of Medicinal Crop Science
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• v.12 no.3
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• pp.226-230
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• 2004

Plant growth should be affected by mulching method. The study was done to examine the effect of different mulching methods on growth and yield of Atractylodes japonica Koidz. The experiment was done by six different mulching methods; no mulching, rice straw, transparent polyethylene (PE), black PE, two combined treatments of rice hull and transparent PE or black PE. Green shoot and related characters, growth and yield of early and late stages were measured on May 8, June 8 and October 26, respectively. Green shoot fresh weight was the highest in transparent PE mulching, while number of leaves, shoot and stem lengths were the greatest in rice straw mulching of the methods. In its early stage, rice straw mulching had the fewest number of leaves, roots, stems, the smallest width of leaves, and the least fresh weights of shoots and rhizomes. Combined mulching of black PE and rice hull showed the highest values in root-related characters; number of roots, fresh weights of rhizomes and roots. In its late stage, the treatment effects shown in the early stage disappeared owing to high temperature of mid-summer so that there was no significant difference between the mulching treatments. Yield per unit area and marketable yield were the highest in rice straw mulching, and combined mulching of black PE and rice hull.

• Carbon letters
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• v.26
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• pp.66-73
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• 2018

We assessed the effects of combining bio-char with straw residue mulching on the loss of soil soluble nutrients and citrus yield in sloping land. The two-year study showed that straw residue mulching (ST) and bio-char application combined with straw residue (ST+BC) can significantly reduce soil soluble nutrient loss when compared with the control treatment (CK). The comparative volume of the soil surface runoff after each of the treatments was as follows: CK > ST > ST + BC. Compared with the CK, the runoff volume of the ST was reduced by 13.6 % and 8.5 % in 2014 and 2015, respectively. Compared with the CK, combining bio-char with the ST application reduced the loss of soluble nitrogen and improved the soil total nitrogen content reaching a significant level in 2015. It dramatically increased the soil organic matter content over the two year period (36.3% in 2014, 50.6% in 2015) as well as the carbon/nitrogen ratio (C/N) (16.6% in 2014 and 39.3% in 2015). Straw mulching combined with bio-char showed a trend for increasing the citrus yield.