• Korean Journal of Weed Science
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• 제8권1호
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• pp.59-63
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• 1988

In order to select herbicides which may feasible to water-seeded rice culture, pot trial was initiated to determine phytotoxicity of rice plants to pyrazolate, bensulfuron methyl, chlormethoxynil, and benthiocarb under water-seeded condition. Pyraolate at 300 and 600 g ai/10a did not show crop injury and growth inhibition of rice plants. Bensulfuron methyl at 5.1 g ai/10a and benthiocarb at 210 g ai/10a were relatively safe to water-seeded rice plants when treated at 5 days after seeding. Chlormethoxynil at 210 g ai/10a showed crop injury and growth inhibition of rice plants and thus may not feasible to water-seeded rice culture.

• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2011년도 추계학술발표회
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• pp.158-159
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• 2011

• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2011년도 추계학술발표회
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• pp.160-161
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• 2011

• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2011년도 추계학술발표회
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• pp.156-157
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• 2011

• Korean Journal of Medicinal Crop Science
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• 제19권4호
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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.

• 한국약용작물학회:학술대회논문집
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• 한국약용작물학회 2012년도 심포지엄 및 춘계학술발표회
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• pp.39-40
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• 2012

• Korean Journal of Soil Science and Fertilizer
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• 제27권2호
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• pp.117-124
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• 1994

A study was conducted to dectermine the days with optimum soil moisture after drainage or rain for machine workability and seeding establishment on dry seeding in paddy soils(Jeon buk Series, Haplaquepts). The results are summarized as follows. 1. The possible days of tractor-rotary plough were 5days or more for non-mole hole plot(control). The possible days were 2~4days and the optimum days were 5~6days for mole hale plat. 2. The ratio of soil clod(<1cm) was 1 % and 15% for control and mole hole plats, respectively. The optimum soil moisture range for seeding establishment was 31~32% in this soils. 3. The possible days of combine harvesting work were 9days and 5days after drainage for control and mole hole plots, respectively. 4. Soil physical properties were improved but soil organic matter calcium and magnesium in the soil were decreased in the mole hole plats. 5. Yield was 415kg/10a at seeding after 6day drainage in control and 440kg/10a at seeding after 4day drainage in the mole plots.

• KOREAN JOURNAL OF CROP SCIENCE
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• 제41권3호
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• pp.295-301
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• 1996

This study was carried out to clarify the effect of sprout length, burried depth of seed and CaO$_2$ seed coating on emergence, seedling stand and early growth of rice in puddled-soil drill seeding at Junbuk in 1995. The cultivar tested was Dongjinbyeo(Japonica type). Although the longer sprouted seeds were caused the better seedling stand, 4mm sprout length of seeds appeared to be appropriate for good seedling stand and seeding uniformity, while 6mm sprouted seed resulted in ununiform seedling establishment. Rapid emergence and increased seedling stand were obtained by CaO$_2$ seed coating, which had effect more on soaked seed than on sprouted seed, but the seedling stand of sprouted seeds significantly reduced at deeper than 1cm seeding depth and also emergence rate of sprouted seeds significantly reduced at deeper than 2cm seeding depth.

• Journal of Practical Agriculture & Fisheries Research
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• 제15권1호
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• pp.63-73
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• 2013

The research was conducted to determine a seed germination and seedling establishment of rice plant under seed coating materials such as iron, silicate, and phyllite and under covered with silicate and iron coated & silicate covered in the puddled wet hill seeding and wet line seeding methods. The seedling establishment was high in silicate and untreated control of 100%>phyllite coating of 91.5%>silicate coating of 88%>iron coating and silicate covered of 86%>silicate covered of 75.5% in the puddled wet hill seeding method, respectively. At 35days after treatment there was high in seedling height at silicate covered of 23.8cm>control of 23.6cm>silicate coating of 21.4cm>phyllite coating of 20.2cm>iron coating and silicate covered of 16.8cm>iron coating of 15.4cm. In puddle wet line seeding method rice seedling establishment was high at control and silicate covered of 100%>iron coating and silicate covered by 97.5%>phyllite coating by 94.8%>iron coating by 86%. Seedling height was high in silicate covered of 22.1cm>control of 21.2cm>silicate coating of 20.0cm>phyllite coating of 19.0cm>iron coating of 17.7cm>iron coating and silicate covered of 17.0cm, respectively.

• KOREAN JOURNAL OF CROP SCIENCE
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• 제38권2호
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• pp.166-173
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• 1993

Seed infection to pod and stem blight (Diaporthe phaseolorum) is severe at summer type soybeans maturing at hot and humid conditions. In order to increase germination and plant stand, this experiments were evaluated the effects of fungicide Benoram(Benomyl 20% ${\pm}$ Thiram 20%) seed treatments with different seed sizes on emergence yield at field conditions, and with different infection degrees to pod and stem blight on germination in laboratory. Benoram treatment on seed was improved emergence rate and elongated hypocotyl not increased growth and yield. It was clearly improved length but germinations and germination speed by Benoram fungicide treatment on severely infected seed however was not improved germination rate at good quality of seeds and the effect was higher at large seed cultivar than small ones.