• Korean Journal Plant Pathology
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• v.12 no.2
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• pp.231-236
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• 1996

한국에서 재배되고 있는 벼 품종의 도열별에 대한 지속저항성 품종을 조기에 선발, 보급할 수 있는 방법을 보색하기 위하여 1985년부터 1994년까지 온실 유묘검정, 밭못자리 및 포장검정을 통하여 저항성 정도를 평가하고 재배면적과 재배기간을 참고로 하여 지속저항성 품종을 선발하였다. 도열병에 대한 저항성 품종으로는 다양한 레이스에 침해되면서 개체당 병반수 20개 이내, 밭못자리검정에서는 평균 발병정도 5이하, 본답에서의 잎도열병은 병반면적율 0.5%이하, 이삭도열병 발생은 이병수율 5% 이내로 병발생이 비교적 적은 섬진벼, 팔공벼 및 동진벼를 선발하였고, 지속저항성 품종으로는 재배기간이 10년 이상 유지되면서 재배면적은 전체재배 면적의 20% 이상을 차지하고 있는 품종 중 장기간 동안 저항성을 발현하는 동진벼를 선발하였다.

• Korean Journal of Soil Science and Fertilizer
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• v.43 no.2
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• pp.180-187
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• 2010

The study was performed to investigate the property of rhizosphere microorganisms, and community structure during GMO, and Non-GMO rice cultivation. In the dilution plate technique, there were no significant differences in microbial populations of rhizosplane with genetically modified, and non-genetically modified rice cultivation, and rhizosphere were also the same results. Dominant bacterial genera were Afipia 12.5%, Spingomonas 10.0%, Ramlibacter 10.0%, Mycobacterium 7.5%, and Tetrasphaera 7.5% in rhizosphere soil of genetically modified rice plant, while Afipia 7.3%, Spingomonas 12.2%, Ramlibacter 7.3%, Mycobacterium 17.1%, Tetrasphaera 14.6% in non-genetically modified cultivated at Suwon test fields in 2006. Majorgenera isolated from root surface cultivated in Yesan fields were Arthrobacter 12.7% in rhizoplane of genetically modified plant, and Burkholderia 22.2% of non-genetically modified plant in 2007, Paucimonas 26.6% of genetically modified plant, Chryseobacterium 15.4% of non-genetically modified plant in 2008. Also the microbial communities in rhizosphere soils of genetically modified, and non-genetically modified plants were characterized using phospholipid fatty acid, and denaturing gradient gel electrophoresis. The phospholipid fatty acid profiles of soils in this condition showed different pattern, but did not show significant differences between soils cultivated with genetically or non-genetically modified rice plants.

• Korean Journal of Weed Science
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• v.18 no.1
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• pp.12-19
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• 1998

The pattern of rice cultivation in Korea is changing from hand transplanting and machine transplanting into direct-seeding for low input and cost-down practices. However, there are still some obstacles to establish the direct-seeding cultural practices because of poor seedling stand, lodging, and weed infestation. In particular, there were much more and wide weed occurrence in direct-seeding rice as compared with the transplanted rice. Weed occurrence in terms of dry weight of weeds was highest in dry direct-seeded rice followed by sowing an puddled soil, sowing on submerged soil in order as compared with transplanting with infant rice seedling. Echinochloa crux-galli was a common dominant weed with 35~44% distribution in any direct-seeding methods. The dominant weed species were E. crux-galli, Cyperus difformis, C. serotinus, and Ludwigia prostrata in dry-seeded rice. The dominant weed species in water-seeded rice were E. crus-galli, Eleocharis kuroguwai, Scirpus juncoides, and Monochoria vaginalis. Yield loss of rice due to weeds at weedy condition was 96% in dry direct-seeded rice. In water-seeded rice, yield loss was 61%, whereas yield loss was 40% in machine transplanting with infant rice seedling.

• Korean Journal of Organic Agriculture
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• v.10 no.4
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• pp.9-26
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• 2002

현행 유기식품생산에 관한 국제규격인 IPOAM Basic Standard와 Codex guidelines이 지나치게 유럽과 미주의 밭농사 위주에 적합하도록 규정되어져 있어, 논농사 위주의 아시아 유기농업에 얼마나 불공정한 국제규약인가를 지적하고 있으며, 가까운 장래에 이러한 불공정 유기농업 국제규격이 대폭 수정 개정되어야 함을 주장하고 있다. 또한 세계3대 식량 작물의 하나인 벼에 대한 유기식품생산규격이 없는 까닭에 소농규모 및 논농사 중심의 아시아 유기농업이 어떠한 어려움에 봉착하고 있는지를 보고하고 있으며, 향후 벼 재배의 중심지인 아시아 유기벼 생산기술과 현실을 반영하는 국제 유기벼 재배 기본규약이 제정되어야 하는 당위성을 설명하고 있다. 이를 위해 IFOAM 기본규약을 개정하기 위한 절차와 그 방법과 Codes 유기식품규격을 개정하기 위한 절차와 방법들에 대해 논하고 있다. 또한 이러한 국제유기식품규격의 수정을 위한 국제공조 과정에서 ARNOA (아시아유기농업연구기구)와 각국 정보 및 유기농업 학자들이 과연 어떻게 역할을 분담하고 협력하여야 할 것인가에 대해서도 논의하고 있다.

• Journal of Practical Agriculture & Fisheries Research
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• v.21 no.1
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• pp.49-59
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• 2019

The field trial was performed to evaluate the rice growth and yield in different direct seeding methods after Italian Ryegrass Harvest The required time for seed emergence was for 7 ~ 8days in the tested direct seeding methods and there was high in seedling establishment in order of wet hill-seeding with iron-coated seeds > water seeding with iron-coated seeds > wet hill-seeding with soil coverage with pregerminated seeds. The rice plant height was shorter in the tested direct seeding methods than that of machine transplanting until 45day after seeding but there was not significant difference in terms of statistical analysis at 63day after seeding. The growth of tiller number in the rice plant was high in water seeding with iron-coated seeds and wet hill-seeding with soil coverage and low in wet hill-seeding with iron-coated seeds compared to machine transplanting. The yield component in the tested direct seeding methods was not significant difference in terms of statistical analysis. The milled rice yield in the tested direct seeding methods was higher 2 ~ 8% being with 4.94 ~ 5.24t/ha than that of machine transplanting but there was not significant difference in terms of statistical analysis. The percentage of head rice was low in the tested direct seeding methods compared to machine transplanting. The weedy rice was not occurred in the tested rice cultivation methods. In conclusion the direct seeding method would be recommended to be a suitable to in following by Italian ryegrass harvesting in southern area of Korea in terms of reduction in production cost and high income basis for rice growing farmers.

• Korean Journal of Organic Agriculture
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• v.18 no.2
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• pp.199-208
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• 2010

To investigate a comparison of rice yield and quality between organic and conventional cultivation, study for occurrence of rice diseases carried out in rice (Oryza sativa L.) field of Noahn and Bannam region. The results obtained as following: 1) Bactericide and insecticide were applied twice and four times at Noahn and Bannam region in conventional cultivation (C.C) of rice field, respectively, it was applied twice at two region in organic cultivation (O.C). Rice strip virus, leaf blast, neck blast, sheath blight, bacterial leaf blight, rice water weevil, rice leaf folder, and plant hoppers were occurred mainly in rice field. Leaf blast, neck blast, and rice leaf folder were occurred highly at O.C compared with C.C. 2) Growth level of rice in clum and panicle length was lower at O.C than C.C. Number of panicles per hill was by 0.6 higher at O.C than C.C. Number of panicles per hill was by 0.6 higher at O.C than C.C in Noahn region. Number of spikelets per panicle, grain filling ratio, brown/rough rice ratio, and weight of 1,000 grains was lower at O.C than C.C. Number of panicles per hill was by 0.8 lower at O.C than C.C in Bannam region. Number of spikelets per panicle and grain filling ratio was higher at O.C than C.C while brown/rough rice ratio was lower at O.C. Total yield percentage of rice in O.C was level of 84% at Noahn region and 94% at Bannam region compared with C.C. 3) Head rice percentage was lower at in O.C than C.C at two region. Protein and palatability (Toyo value) were lower at O.C than C.C in Bannam region causing occurrence of neck blast and rice leaf folder by oversupply of nitrogen fertilizer. Protein, whiteness, and palatability (Toyo value) were adequate level at O.C in Noahn region by lower nitrogen fertilizer.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.42 no.1
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• pp.14-21
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• 1997

This experiment was conducted to identify the growth and yield differences in rice cultural types: Broadcasting on flooded paddy surface(BF), drilling on flooded paddy surface(DF), puddled-soil drill seeding(PD), drill seeding on dried paddy flat(DD), and machine transplanting of lO-day old seedling(MT) at National Honam Agricultural Experiment Station in 1995. Among the cultural types of direct seeding, the number of seedling stand showed high in order of DD>BF>DF>PD. Tillering at early growth stage was faster in MT and effective tiller showed higher in MT than in direct seeding. Growth duration from seeding to heading was longer in direct seeding than in MT for 2-13 days of Dongjinbyeo and 10-18 days of Nonganbyeo. Root distribution ratio at the surface soil revealed high in order of BF>DF>PD>DD and MT. Culm wall thickness of 4th internode was thicker in machine transplanting of 10-day old seedling than in direct seeding, and the depth of buried culm showed deep by turns of MT> DD>PD>DF and BF. The height of center gravity and moment related to lodging revealed higher in direct seeding than machine transplanting that resulted high lodging index by turns of BF>DF>DD> PD among the direct seeding cultural type. Lodging was occured seriously in the order of BF>DF>PD>DD =MT in Dongjinbyeo but wasn't significantly different in Nonganbyeo among the cultural type. The yield components and grain yield showed varietal differences but was not significantly different between in MT and in direct seeding, and among cultural types of direct seeding.

• Proceedings of the Korea Water Resources Association Conference
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• 2020.06a
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• pp.178-178
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• 2020

본 연구에서는 벼 생육시기별로 염수 관개가 벼 작물에 미치는 생육 영향정도(민감도)를 평가하기 위하여 벼 재배실험(포트실험)을 수행하였다. 벼 재배실험은 일반 논토양(삼광벼)과 간척 논토양(신동진벼)을 대상으로 하였고, 벼 생육시기는 이앙기~활착기, 활착기~유수형성기, 유수형성기~수잉기, 수잉기~출수기, 등숙기의 5단계로 구분하였다. 벼 재배는 3반복 실험을 위해 총 126개의 포트(Φ215×Φ170×210mm(H))를 조성하여 5월 20일에 1주 3본으로 이앙을 하였다. 물 관개방식은 생육시기별로 염도를 1,000, 1,500, 2,000, 2,500 ppm으로 조절한 각각의 염수를 관개하고, 그 이외의 기간에는 담수(지하수)를 관개하였다. 벼 생육시기별로 염수 관개에 의한 벼 생육에 대한 민감도를 평가하고자 벼의 초장, 분얼수, 수확량을 조사하였다. 간척 논토양에서 초장, 분얼수는 생육초기인 이앙기의 염수에 의해 가장 민감하게 영향을 받는 것으로 나타났고, 수확량은 이앙기, 분얼기, 유수형성기 순으로 민감하게 영향을 받는 것으로 나타났다. 일반 논토양에서는 초장, 분얼수는 생육시기에 따른 염수관개에 의한 영향이 크지 않았으며, 수확량은 염분농도에 관계없이 이앙기, 분얼기, 유수형성기 순으로 염수에 의해 민감하게 영향을 받는 것으로 나타났다. 이러한 결과는 다수의 선행연구(Hassen Ebrahimi 등, 2011)의 벼 생육기인 분얼기, 유수형성기의 염수 관개가 수확량에 가장 많은 영향을 받는 결과와 일치하였다. 일반 논토양과 간척 논토양 모두 이앙기, 분얼기, 유수형성기 순으로 염수 관개에 민감한 영향을 나타내고 있으며, 특히 염분 배경농도가 높은 간척토양은 저농도의 염수에서도 민감한 반응을 보이고 있는 것으로 나타나, 벼 생육초기의 관개용수 염도관리는 매우 중요하다고 판단된다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.41 no.5
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• pp.551-557
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• 1996

In order to establish a labour-saved and environment friendly paddy rice system in southern Korea, no-tillage paddy system was proposed and investigated from 1992 to 1993. Basically this system includes a complete return of crop residules into the soil, and zero-tillage. In an effort to minimize labour requirement in rice farming, several cultivars were directly sown and grown under the system and the characteristics of the growth and yield potential of the cultivars were compared with those grown in an ordinary paddy soil. Joryeongbyeo, Dongjinbyeo, Daeyabyeo and Calose rices showed high level of seedling establishment in the no-tillage padddy system. However, the value was significantly lower than in those of the cultivars direct-sown in an ordinary tillage paddy condition. The rice direct-sown and grown under the no-tillage paddy system showed significantly decreased number of tillers per square meter and plant height, but increased ripened grains. The lodging-related characteristics of rice plant, such as band breaking weight, the length of top 3rd ∼4th internodes, the height of weight center, and lodging index, were observed positive aspects in cultivars such as Hwasungbyeo, Hwayongbyeo, Joryeongbyeo, Calose and Calose 76 and being considered adaptable to direct-sown under the no-tillage paddy system.

• 농업기술회보
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• v.49 no.4
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• pp.21-22
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• 2012

벼 흰잎마름병은 벼에 발생하는 중요한 세균병 중 하나로 우리나라 벼 재배에서 가장 큰 피해를 주고 있다. 한 번 발생하면 치료가 힘든 병으로 알려져 있어 예방위주로 철저히 방제해야 수량감소와 쌀의 품질저하를 막을 수 있다.