• Proceedings of the Korean Society of Organic Agriculture Conference
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• 2009.12a
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• pp.285-285
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• 2009

벼 유기재배에 있어서 녹비작물을 이용하여 화학비료를 대신하고 있으나 녹비를 이용하기 위해서는 월동 전에 파종하고 이듬해 벼 이앙 전에 토양에 환원을 해야 하는 번거로움이 있다. 따라서 벼 재배 직전에 유기자재를 이용하여 화학비료를 대신하고자 했을 경우 유기자재를 전층시비와 표층시비의 차이에 따른 토양중의 이화학적 특성과 벼의 수량특성의 변화를 구명하였다. 벼 유기재배시 토양양분공급용으로 이용되고 있는 유기자재 4종을 공시하여 유기자재의 질소 성분량(7kg/10a)을 기준으로 하여 이앙 20일전에 시비방법별로 전층시비와 표층시비 2처리로 구분하여 전량 기비시비하고 경운한 다음 동진1호를 시험품종으로 하여 2년 연속 시비처리와 벼를 재배하면서 일어나는 토양의 이화학적 특성과 벼 생육 및 특성의 변화를 시기별로 조사하였다. 시험 전 토양의 화학성은 표층시비구의 염류농도, 가리와 석회의 함량이 다소 높아서 염류농도가 전층 시비구 보다 높은 조건의 토양이었다. 유기자재별 무기화 정도는 전층시비보다 표층시비를 할 때 약 20~30일 정도 빨랐다. 토양 중의유기물 잔존함량은 시비방법간의 큰 차이는 없었으나 표층시비를 할 경우 후기로 갈수록 다소 증가되는 경향이었으나, 전질소 잔존함량은 감소되었다. 토양 액상과 공극율은 전층시비>표층시비였으며, 입단 형성력도 같은 경향이었다. 토양 효소활성은 PME의 활성은 유기자재를 전층처리하였을 때 촉진되었으며, $\beta$-Glucosidase의 활성은 전층보다 표층처리시 활성이 높았다. 시비방법에 따른 벼의 수량 특성은 시비방법별로는 표층시비를 할 경우 전층시비보다 4~7%의 높은 특성을 보였으며, 관행대비 1년차에는 3~9%의 낮았으나, 2년 연속처리를 할 경우 대조구와 비슷해 지는 경향이었다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.41 no.6
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• pp.698-703
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• 1996

To elucidate the proper nitrogen application method for machine transplanting of rice infant seedling in no-tilled paddy, Dongjinbyeo was used and nitrogen was applied five methods including conventional application method. Leaf color was darker at 80% of total nitrogen was applied as basal and lighter at 20% of total nitrogen was reduced than conventional application method in tillering stage, but wasn't significantly different after panicle formation stage among the application method. And it was thinner at tillering stage and was darker after panicle formation stage in no-tilled paddy compared with tilled paddy. Tiller number, LAI and top dry weight were more at 80% of total nitrogen was ap-plied as basal than conventional application method, and more in tilled paddy than no-tilled one at tillering stage, but at heading stage they were highest at top dressing applied 25 days after transplanting. C.G.R was highest at top dressing for tillering was delayed and it was lower in no-tilled paddy at tillering stage but was higher after panicle formation stage than in tilled one. Yield was highest at top dressing time was delayed among nitrogen application method, but wasn't significantly different between tilled method in same nitrogen application method.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.41 no.1
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• pp.68-76
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• 1996

To elucidate the optimum fertilizer level and application method for band application under puddled-soil drill seeding in Jeonbuk series of fluvio-marine alluvial soil at National Honam Agricultural Experiment Station in 1995, using Dongjinbyeo, slow releasing compound fertilizer of 100％ and 80％ to conventional application level was applied totally as basal fertilizer simultaneously with seeding under 3cm and 5cm depth from soil surface in a distance of 4cm from the seeded row. Plant height was taller and tiller number was higher in band application than conventional application but ratio of effective tiller was vice versa. Panicle number was more but ratio of effective tiller ratio was lower in 100％ than 80％ level of band application and they were higher in 3cm than 5cm depth from soil surface. Leaf area index and dry weight was higher in conventional application at early growth stage but was vice versa after maximum tillering stage, and they were higher in 3cm depth at early growth stage but 5cm depth after maximum tillering stage. NH$_4$-N in soil was higher in conventional application at 25 days after seeding but, thereafter was lower than band application and it was higher in 3cm than 5cm depth till 40 days after seeding but was versa, thereafter. Lodging degree was slightly higher in band application, 100％ level and 5cm depth than in their counterparts. Panicle number and grain number per $m^2$ was lower in conventional application than 80％ or 100％ level of band application without significant difference between band application levels or application methods. Yield was higher at 80％ level of band application under 3cm depth than conventional application, but no significantly different among other application methods. Therefore, 80％ level of band application under 3cm depth of soil surface was more effective for puddled-soil drill seeding on the basis of the reduction of application efforts, better plant growth and higher yield in rice.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.37 no.5
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• pp.413-418
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• 1992

The higher fertilizer application level and frequency of additional fertilizer increase the higher the growing characters of plant height, No. of leaves, No. of stem per plant, and No. of ears per main stem, etc., appeared. The yield characters of No. of grains per plant, percentage of threshing, weight of 1 $\ell$, weight of 100 grains and seed yield per 10a appeared high both in used N 14kg, 40% as the basic dressing, 30% as the 1st top dressing, 20% as the 2nd top dressing and 10% as the 3rd top dressing, and in used N 18kg as the total amount of basic dressing. Dispersion analysis showed the difference of significant level according to the interactions, among fertilizer application levels, among fertilizational methods, and between fertilizer application and fertilizational method.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.37 no.6
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• pp.499-505
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• 1992

This experiment was carried out to find out the optimum application method of slow-release fertilizer under different soil textures, clay loam(Deogpyeong series), sandy loam (Gangseo series) in the southern region(Milyang, Kyeongnam) of Korea. The fertilizers used were Chosun slow-release fertilizer(silicate latex coated fertilizer: N-P$_2$O$_{5}$-K$_2$O=18-12-13) and Meister 15 (thermoplastic resin coated fertilizer : N-P$_2$O$_{5}$-K$_2$O=14-14-14). The two whole basal application methods such as side band placement at transplanting time of rice plant(cv.Donghaebyeo) and incorporation with soil as basal were tested. The released amount of ammonium nitrogen from the soils for 4 days submerged was 95ppm in sandy loam and 60ppm in clay loam. The greenish degree of rice leaf was higher at the whole plow layer placement method than the others. The nitrogen efficiencies of the fertilizers were Meister 15 > convention > Chosun in order and between the application methods were similiar. The growth status was better at the whole plow layer placement application method of Meister 15 regardless of soils and seedling ages. The ripening ratio was increased at slow-release fertilizer application, and between application methods, whole plow layer placement was lower because of lodging damage. The yield in clay loam soil showed a significant difference between the ferilizers, but there were slight differences between the application methods and fertilizers in sandy loam soil. As a result, the slow-release fertilizer, Meister 15, applied at the whole layer showed a good rice growth and seemed a plausible fertilizing method.

• 농업기술회보
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• v.47 no.4
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• pp.30-33
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• 2010

유씨엠티농법을 처음 접해보는 과수 농가를 위해 그간의 내용이 반복되지만 소상하게 설명하고자 한다. 좋은 과실은 어느 한 가지 특정한 기술만이 아닌 종합적인 기술을 통해야만 얻어지는 결과물이다. 농약을 사용하는 것은 오직 작물의 병충해를 막는 작용을 할 뿐이고 작물의 품질을 높이는데 있어 중요한 것은 역시 시비관리이다. 시비관리의 정수라 할 수 있는 유씨엠티농법은 최고의 사과와 배를 만들 수 있는 간단하고 쉬운 최선의 방법이라고 할 수 있다. 사과 배 두 작물의 시비방법은 동일하기 때문에 함께 설명하기로 한다. 원활한 수분관리를 하면서 식물의 필수 16개 원소를 균형 있고 지속적으로 공급하는 완벽한 시비관리가 가장 과학적인 영농방법이다. 퇴비는 반드시 완숙된 퇴비(속성고온퇴비)의 사용을 전제로 하고 재배에 들어 들어간다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.40 no.5
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• pp.629-636
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• 1995

This study was carried out to clarify the proper nitrogen application methods under the different seedling density in puddled-soil drill seeding of rice. Seedling density was adjusted as 30, 60, 90, 120 and 150ea/$m^2$ just after emergence and nitrogen was applied with five methods including conventional respectively. The maximum tillering stage was shorten as the seedling density was increase but decreased the percentage of productive tillers. Lodging was occurred serverely as the seedling was more than 120ea/$m^2$, when nitrogen was applied at panicle initiation stage. Grain yield wasn't significantly different among seedling densities when it was more than 60ea/$m^2$, but the density of 30ea/$m^2$ was decreased. It wasn't significantly different among the nitrogen application methods when it was more than 90ea/m, but was higher at early application of tillering fertilizer (T$_2$) than conventional method when the seedling density was less than 60ea/$m^2$. Supposing that the yield of reseeding is the same as optimum seedling density, minimum seedling density needs for reseeding would be less than 55 ea/$m^2$ as the aspect of income allowed for managing expense.

• Journal of Bio-Environment Control
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• v.21 no.1
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• pp.57-65
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• 2012

Fertilization is essential to seedling production in nursery culture, but excessive fertilization can contaminate surface and ground water around the nursery. The objective of this study was to find optimal fertilization practice of container seedling production for reducing soil and water contamination around the nursery without compromising seedling quality. This study was conducted to investigate chemical properties of the growth medium, growth performance, chlorophyll fluorescence, and chlorophyll contents of larch ($Larix$ $kaempferi$) growing under three different fertilization treatments (Constant rate, Three stage rate, and Exponential rate fertilization). Root collar diameter and height of larch were not significantly different among treatments even though the nutrient supply of the exponential treatment was half that of the constant and three stage treatments. Chemical properties of the growth medium showed the same trends as root collar diameter and height. The total biomass and seedling quality index (SQI) were higher at Constant than at other treatments, but both SQI of Constant and Exponential were not significantly different. Photochemical efficiency and chlorophyll contents were lower at Exponential than at other treatments, but not significantly different among treatments. Therefore, Exponential fertilization which is 50% fertilizer of other treatments would maximize seedling growth and minimize nutrient loss.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 1992.12a
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• pp.14-14
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• 1992

시설원예에 있어서 작물의 생장량을 촉진시켜 수확시기를 앞당기고, 생산량을 증가시키며, 품질을 향상시키기 위하여 탄산가스를 시비하는 재배방법이 도입되고 있다. 그러나 탄산가스의 시비가 작물에 악영향을 주는 경우도 보고되고있어 탄산가스 시비에 주의를 기울여야 한다. 기존의 탄산가스 시비방법은 일정한 농도를 유지하는 것으로 탄산가스 낭비나 고농도에 의한 생육장애 혹은 탄산가스 결핍을 초래하는 등의 문제점을 갖고 있다. (중략)

• KOREAN JOURNAL OF CROP SCIENCE
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• v.61 no.4
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• pp.264-269
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• 2016

The present study was conducted to establish the optimal fertilization type and method for no-tillage during the first year of No-tillage (NT) and Conventional-tillage (CT) practices for soybean, using different types of fertilizers. In this experiment, the culm length and stalk diameter showed a greater response to fertilization with surface irrigation than to conventional fertilization. The fastest flowering period (July 28) occurred using chemical fertilization applied via subsurface irrigation. Comparing maturation based on growth characteristics and flowering date revealed that fertilization with subsurface irrigation was more effective for the growth of crops than other methods. Regarding yield, there was no significant difference between livestock and chemical fertilizers in subsurface irrigation, but there were significant differences between these fertilizers when using conventional fertilization methods. Based on the results, livestock fertilizer with subsurface irrigation effectively enhanced crop quantity. Nitrogen absorption of plants using subsurface irrigation was more effective than that using conventional fertilization. Regarding phosphorus absorption of plants, chemical fertilizers showed higher absorption than did livestock fertilizers for both subsurface irrigation and conventional fertilization. Unlike nitrogen, phosphorus was highly absorbed using conventional fertilization. Absorption of phosphorus and potassium were similar but phosphorus was not absorbed using livestock fertilizers applied either using subsurface irrigation or with conventional fertilization.