• 한국약용작물학회지
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• 제17권3호
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• pp.204-209
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• 2009

This study was conducted to assess water movement in paddy-upland rotation soil scheduled for ginseng cultivation through the measurement of infiltration and permeability of soil water. Soil sample was divided with four soil layers. The first soil layer (to 30cm from top soil) was loamy sand, the second and the third soil layers (30$\sim$70 ㎝) were sand, and the fourth (< 120 ㎝) was sandy loam. The soil below 130 ㎝ of fourth soil layer was submerged under water. The shear strength, which represents the resisting power of soil against external force, was 3.1 kPa in the first soil layer. This corresponded to 1/8 of those of another soil layer and this value could result in soil erosion by small amount of rainfall. The rates of infiltration and permeability depending on soil layers were 39.86 cm $hr^{-1}$ in top soil, 2.34 cm $hr^{-1}$ in 30$\sim$70 ㎝ soil layer, 5.23 cm $hr^{-1}$ and 0.18 cm $hr^{-1}$ in 70$\sim$120 ㎝ soil layer, with drain tile, and without drain tile, respectively. We consider that ground water pooled in paddy soil and artificial formation of soil layer could interrupt water canal within soil and affect negatively on water movement. Therefore, we suggest that to drain at 5 m intervals be preferable when it makes soil dressing or soil accumulation to cultivate ginseng in paddy-upland rotation soil to reduce failure risk of ginseng cultivation.

• 한국토양비료학회지
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• 제48권6호
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• pp.671-676
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• 2015

Control of surface runoff from upland soil is essential to reduce nonpoint source pollution. The use of non-woven fabric as a soil cover can be helpful to control surface runoff. The field experiment was conducted to evaluate the furrow cover effects of black non-woven fabric on the nutrient discharge from upland soil used for red pepper cultivation. The experimental plots consisted of chemical fertilizer (CF), cow manure compost (CMC), and pig manure compost (PMC) treatment. Each nutrient material treatment plot has control (no furrow cover (NFC)) and black non-woven fabric cover treatment, respectively. The amount of nutrient application was chemical fertilizer of $190-112-149(N-P_2O_5-K_2O)kgha^{-1}$, cow manure compost of $29.5tonha^{-1}$, and pig manure compost of $7.9tonha^{-1}$ as recommended amount after soil test for red pepper cultivation. Compared to control (NFC), furrow cover treatment with black non-woven fabric reduced the amount of T-N discharge by 50% at CF treatment, 36.9% at CMC treatment, and 44.8% at PMC treatment. Furrow cover treatment with black non-woven fabric reduced the amount of T-P discharge by 37.1% at CF treatment, 49.9% at CMC treatment, and 63.4% at PMC treatment compared to control (NFC). The production of red pepper did not show significant difference. There was no weed occurring in furrow cover treatment plots with black non-woven fabric. Results from this study showed that the furrow cover with black non-woven fabric could play a significant role in reduce nutrient discharge from upland soil used for red pepper cultivation.

• 농촌계획
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• 제4권1호
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• pp.86-97
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• 1998

It is neceesary to evaluate the location suitability of protected cultivation facilities to guide reasonable protected cultivation. The evaluation system could help plan new protected cultivation facilities in rural areas. In this study, an assessment was made for the facilities located in three different selected regions: suburban, plain, and mountainous. The assessment was performed based on spatial characteristics of protected cultivation facilities such as land category, size of protected cultivation facilities, land shape, stoniness, land consolidation level, soil drainage, land slope, topography, effective soil depth, zoning or not of agricultural development area, irrigation and drainage condition, distance from roads, and so forth. The results showed that there were significant differences in locational characteristics among the three regions.

• 생물환경조절학회지
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• 제10권3호
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• pp.155-158
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• 2001

최근 수출을 위한 백침계오이의 재배 면적이 계속적인 증가 추세에 있어 2000년 현재 약 121ha에 달하고 있다. 백침계오이는 측지 착과형으로 흑침계오이와 달라 수량이 측지의 발생여부에 달려 있다. 그런데 백침오이의 주재배시기는 10월에서 2월까지의 겨울철로, 온도가 낮고, 투광량 부족하여 측지발생율이 저조하다. 따라서 본 시험은 백침계오이의 측지 발생율을 높이기 위한 지중가온의 효과를 구명하고자 실시하였다. 그 결과, 지중가온구는 주당 측지발생수가 13.7%개였고, 무가온구는 11.7개로 지중가온을 하면 측지발생수가 증가함을 알수 있었다. 또한 상품수확과수에 있어서도 지중가온구는 주당 45개인데 반해 지중무가온구는 38개였고, 전체적인 수량도 ha당 81톤으로, 무가온구의 68톤 보다 18%의 증수효과가 있어다. 즉, 수출오이재배시 지중가온을 하면, 측지발생수가 증가하고 특히 장측지가 다수 발생하여 측지 수확과수가 증가하며, 곡과의 발생이 감소하여 상품수량을 증가시킬 수 있다.

• 한국토양비료학회지
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• 제34권2호
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• pp.98-104
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• 2001

가. 우수 토양관리농가의 토성은 대부분 SiL이나 SL이었으며 점토함량은 7%~15%범위이었다. 토양의 용적밀도는 우수 토양관리농가 0.89, 인근농가 1.10이었고, 작토심은 평균 23.1cm로 인근농가 17.8cm 보다 깊었으며, 토양입단함량은 우수 토양관리 농가 61.6, 인근농가 54.2%이었다. 나. 토양의 화학성은 우수토양관리농가가 인근농가에 비해 pH, OM, $NO_3-N$가 양호한 편이었다. 다. 토양선충밀도는 우수 토양관리농가가 인근농가에 비해 뚜렷한 경향이 없었으나, 방선균의 밀도는 우수 토양관리 농가가 인근농가나 노지에 비하여 많은 편이었고, 토양병원성세균인 후사리움밀도는 두 농가를 제외하고는 우수토양관리농가가 인근에 비해 적었다. 라. 우수 토양관리농가의 공통특징은 정식전에는 담수+심경, 거친유기물을 시용하고 화학비료를 지양했으며, 정식 후에는 정적판수와 자가액비(+영양제)위주로 양수분을 공급하며, 휴한기에는 담수+태양열소독이나, 우기시 피복물제거, 옥수수 등 제염작물 재배 및 논으로의 환원 등이었다.

• 한국환경농학회지
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• 제28권4호
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• pp.333-339
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• 2009

Various cultural practices have been promoted as management options for enhancing soil quality and health. The use of soil management methods can cause changes in fertility by affecting soil chemical properties. This study aimed to evaluate interactions between soil chemical properties and soil management methods in protected cultivation, and to classify soil management methods that similarly affect soil chemical properties. Water-logging and irrigation reduced soil pH and available $P_2O_5$ content. Application of animal manures has a positive effect on levels of organic matter, Av.$P_2O_5$, K, Zn, and Cu. The electrical conductivites tened to be low in the application of organic amendments, including rice and wood residues. Deeper plowing caused a reduction in Ca content. Practicing soil nutrient-considering fertilization and fertigation did not exert an influence on nutrient element contents. In a cluster analysis of the soil management methods according to major nutrients, low similarities were found with deeper plowing and crop rotation with rice in comparison with other practices. In a cluster analysis by minor nutrient characteristics, crop rotation and application of animal manures and rice residues were linked at a high Ward's distance, while other practices were found to be relatively low distinct. Each soil management method has a similar or different effect on soil chemical properties. These results suggest the necessity of establishing limits and standards according to the effects of soil management methods on soil chemical properties for economic soil practices.

• 한국조경학회지
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• 제32권5호
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• pp.63-72
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• 2004

This study was carried out to analyze effects of soil, water level and shading on growth of sweet flag(Acorus calamus var. angustatus). Three types of soil were used, which included sandy, silty loam and paddy loam soil. Three levels of shading were applied in the experiment: no shading, 55％ shading and 75％ shading. The water levels were also adjusted to three levels in the experiment. The results are summarized as follows; 1. The cultivation of sweet flag in sandy soil with low water level resulted in decreased fresh weight compared to that at planting. This result indicates that the water level should be maintained higher than the soil surface for sweet flag growth in sandy soil. 2. 5 out of 72 sweet flags died in paddy loam soil. Water saturation of soil easily reduced paddy loam soil, and root growth of sweet flags in reduced soil condition were restricted, resulting in the dead plants. 3. The growth of sweet flag in paddy loam soil was worse than those in silty loam, indicating that reduced soil conditions in paddy loam is harmful to root growth. In planting sweet flags in paddy loam, improved soil aeration in paddy loam soil is necessary for good growth of sweet flag. 4. The maintaining of high water levels is better than that of low water levels in sweet flag cultivation. During winter, soil near the water surface froze and sweet flags in frozen soil were stressed physiologically. Maintaining high water levels prevents soil from being frozen which is good for the growth of sweet flags. 5. There was not significant difference in the growth of the sweet flag between non-shading and 55％ shading. It thus appears that sweet flags can grow soundly under shading rate lower than 55％.

• 한국토양비료학회지
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• 제45권2호
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• pp.306-311
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• 2012

1. 우리나라 남부를 17개 지역으로 구분하여 최근 30년간의 기상자료 분석에 의한 5월~10월의 일평균 PET는 $2.75mm\;day^{-1}$ 이었다. 2. 노지재배 고추의 우리나라 남부 17개 지역별, 3개 토성 및 16개 순별, 총 816경우의 재배여건에 적합한 물 절약형 적정 관개간격 및 1회관개량을 산정하였다.

• 한국식물병리학회지
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• 제14권6호
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• pp.676-681
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• 1998

Disease incidence of Codonopsis lanceolata was surveyed at the major cultivating fields in Chonbuk province in 1996 to 1997. The main diseases of Codonopsis lanceolata were ovserved as leaf spot caused by Septoria codonopsis, anthracnose by Glomerella cingulata, brown leaf spot by Cercospora sp., rust by Coleosporium koreanum, powdery mildew by Erysiphe sp., Fusarium wilt caused by Fusarium oxyporum, and white root rot by Sclerotium rolfsii. Anthracnose, leaf spot and brown leaf spot occurred severely on leaves from early July to late August. They were caused early fallen leaves. Fusarium wilt and white root rot occurred severely on stem and below the soil line in late August. They resulted in withering to death or chlorosis and fallen of leaves. Disease incidence of Codonopsis lanceolata was also substantially different in occurrence with a method of cultivation in late growth stage. Fusarium wilt and white root rot were more severe with a method of no support cultivation than those with a method of support cultivation with a stick. Fusarium wilt occurred 48.8% in a method of no support cultivation but 3.1% in a method of support cultivation with a stick. And white root rot occurred 18.9% in a method of no support cultivation but 0.3% in a method of no support cultivation with a stick. Thus, it proved that soil-borne diseases could be controlled support cultivation with a stick.

• 한국토양비료학회지
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• 제43권6호
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• pp.782-788
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• 2010

Detail management standard on soil conditions in 'Kyoho' grapes were not yet made. Therefore, this study was carried out to investigate the optimum soil environmental conditions on production of high fruit quality in 'Kyoho' grapes. We established using correlation between fruit quality and soil condition. These results were used to develop soil management guideline with promoting efficiency and minuteness in grape vineyard. Soil conditions were analyzed at total 80 vineyards in major grape producing areas such as Ansung, and Cheonan (40 orchards an area). The soil environmental factors affected fruit weight were soil pH of 36.6%, cultivation layer depth of 23.3%, and cation of 17.8%. The soil condition factors affected sugar content were soil hardness of 24.4%, cation of 24.1% and organic matter content of 22.1%. Cultivation layer depth, soil texture, and phosphate content were low as relative contribution. Coloring was involved with organic matter content, CEC (cation exchange capacity), and saturated hydraulic conductivity. while soil pH, cultivation layer depth, and phosphate content showed low contribution. Finally, relative contribution on fruit quality related with sugar content, fruit weight, and coloring were soil hardness of 28.0%, organic matter content of 25.0%, soil pH of 12.9%.