• Horticultural Science & Technology
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• v.16 no.3
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• pp.341-343
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• 1998

This study was carried out to investigate the effects of soil microbial fertilizers on yields of Chinese cabbage (Brassica campestris L.). Five microbial fertilizers, MPK+Husk+Palma, Husk+Palma, MPK+Compost, BLCS(Bio livestock cattle system) cattle dropping, and Tomi, were used. All of microbial fertilizers significantly increased yields of Chinese cabbage, except BLCS cattle dropping. MPK+Husk+Palma was the most effective than any other treatments. Chinese cabbage treated with Tomi showed higher concentrations of K, Ca, Mg, Fe, Mn, and Zn than Compost treatment. MPK+ Husk+Palma was high in concentrations of Mg and Mn. MPK+Compost was high in concentrations of K, Mg, and Na. In a chemical components of soil, concentrations of K and P was increased with Tomi treatment, however, the other concentrations of plant and soil chemical components were not different. In a microbial properties of soil, Tomi, Husk+Palma, and MPK+Husk+Palma treatments increased in the number of total bacteria and bacilli. Tomi treatment increased in the number of actinomycetes and fungi. The other microbial properties of soil showed no significant differences. It would be assumed that yield increase in Chinese cabbage might be due to the beneficial microbial properties, therefore, those would increase yields of Chinese cabbage.

• Korean Journal of Soil Science and Fertilizer
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• v.22 no.3
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• pp.234-238
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• 1989

This study was carried out to find out favorable soil conditions to give good quality of Scutellaria baicalensis George for Korean medicine. The samples were collected from the 7 fields of An-dong gun and Eui-sung gun. The plants were grown under soils of different physicochemical properties and the available constituents from their roots were analyzed by HPLC. The average N, P, K contents in roots was determined to be 0.28-1.26%, 0.17-0.46% and 1.00-1.49%, respectively. The baicalin contents of root was determined to be 11.41-14.76% (An-dong gun) and 13.67-16.31% (Eui-sung gun). The contents of N, P in root were negatively correlated with the contents of exchangeable cations (K, Ca, Mg), clay and organic matter in soil, whereas it was not significant with the contents of total nitrogen and available phosphorus of surface soils. The baicalin contents was positively correlated with the exchangeable potassium contents in soil, but negatively correlated with nitrogen and phosphorus contents in the root of Scutellaria baicalensis George.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.32 no.1
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• pp.67-77
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• 1987

To obtain basic information concerning the soybean cultivar differences of physiological and ecological responses to soil pH to select and breed stably higher yielding cultivars, and to improve cultural management of soil differing in pH, the responses of soybean plants in growth, grain yield, nodule formation and its activity, and major chemical compositions of soybean plants were investigated using six cultivars and two levels of soil pH 5 and 7 of the pot and field experimental soil in Suwon, 1985. Acidic soil condition suppressed overall vegetative growth of soybean plants and thereby decreased stem length, number of nodes, leaf area, dry weight of the plants, root activity, nodulation and nodule activity, the content of allantoin nitrogen, total nitrogen, phosphorous, calcium, and magnesium of the plants. Due to the such responses of soybean plants to the acid soil, grain yield also decreased along with less grains per plant. However, the little difference in growth and yield of the cultivar Janbaeglcong in response to soil pH is considered to be a good source of breeding materials tolerant to acidic soil condition. In this regard Bongeui and Oialkong also were relatively stable in the growth and grain yield under the different soil acidity conditions.

• Horticultural Science & Technology
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• v.19 no.4
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• pp.465-470
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• 2001

This study was carried out to investigate the effect of application dosage and methods of selenium (Se) on mineral contents in garlic. The content of Se was higher in upland than paddy fields. Application of higher dosage of Se salt increased higher content of Se in leaf sheath and bulb of garlic. Se was detected also in the non-treated plot but its amount was negligible. Absorption of Se in garlic was higher when Se was applied in the form of sodium selenate. Foliar application of sodium selenate enriched Se content in garlic as compared with the soil dressing. However, Se content in garlic fluctuated depending on growing conditions. Se content of garlic grown on the artificial soil (vermiculite and commercial soil) in the plastic house was higher than the garlic grown in the paddy field. The growth of garlic was not affected by types, dosage and application methods of selenium. Mineral contents in garlic such as Mg, S and K were higher in the selenium treatment than control. However, this trend was not evident according to dosages of selenium fertilizers.

• Proceedings of the Korean Society of Organic Agriculture Conference
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• 2009.12a
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• pp.306-306
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• 2009

본 실험은 백세주 주정박이 벼의 생육과 토양 비옥도 개선에 미치는 영향을 조사하였다. 백세주 주정박은 압착된 주박을 재 발효시켜 단식증류기로 증류하여 알코올을 회수 후 발생된다. 실험 처리구는 무시용, 요소, 주정박 처리구로 하였고, 벼 질소비료 표준시비량 11kg N/10a를 기준으로 하여 전량 기비로 사용하였다. 백세주 주정박의 유효성분과 유해성분을 분석하였고, 토양에 주정박을 시용 전 후의 이화학적 분석을 하였다. 벼 실험 품종은 오대벼(Oryza sativa L.)이고, 벼의 생육과 수량 및 미질을 분석하였다. 백세주 주정박의 pH는 3.60, 유기물함량 90.12%, 염농도 0.72ds/cm, 수분함량 88%, 질소 0.21%, 인산 0.24%, 칼리 0.09%로 나타났다. 유해성분(중금속)분석결과 비소 0.03ppm, 크롬 0.09ppm, 구리0.91ppm, 납 0.05ppm, 니켈 0.05ppm, 아연 1.30ppm, 망간 3.28ppm, 철 34.86ppm로 나타났다. 토양이화학적 분석결과 주정박 시용처리구의 유기물함량과 질소 및 인산은 각각 23.0g/kg. 0.11%, 89mg/kg로 무시용과 요소처리구에 비해 유의한 차이를 보였다. 벼 이식 후 140일째 생육분석결과 초장 82.60cm, 옆폭 1.40cm, 옆장 37.70cm, 지상부건물중 59.21g로 다른 2개 처리구에 비해 유의한 차이를 보였다. 벼의 수량은 주정박 시용 처리구가 449.0kg/10a로 무시용 89.66kg/10a와 요소 401.66kg/10a에 비해 유의적인 차이를 보였다. 백세주 주정박 시용을 통해 토양 개량 효과를 기대할 수 있고, 공시 토양의 토양 개량 효과가 벼의 생육에 긍정적인 영향을 끼치는 것으로 나타남에 따라 백세주 주정박의 토양개량제로서의 활용 가능성을 확인하였다.

• Korean Journal of Plant Resources
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• v.12 no.4
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• pp.282-288
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• 1999

The experiment was carried out to determine the effects of soil condition on the agronomic characters and aromatic substances in cultivated Codonopsis Lanceolata. An increase of planting densities of Codonopsis Lanceolata. from 1 to 5 plant per pot resulted in the smaller root width, but root yield increased from 109.8g to 286.9g per 1/200pot. The width growth as soil water contents were higher in surplus soil water than that of cultivated deficit soil water. The contents of water, reducing sugar, crude protein and malic acid were higher in cultivated wild than in cultivated upland soil. The higher contents of volatile essential oils as 3-rnethylpentanoic acid and squalene was obtained at the normal soil moisture.

• Korean Journal of Environmental Agriculture
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• v.23 no.4
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• pp.211-219
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• 2004

Three sludge types from pharmaceutical byproducts and one sludge type from cosmetic waste-water sludge as raw materials of compost were used in a field based concrete pot ($4\;m^2$, $2\;m{\times}2\;m$) for investigating damage of red pepper cultivation. These sludges and pig manure (1 Mg/10a, dry basis) were incorporated into the upper of clay loam soil prior to transplanting with red pepper. Changes in concentration and properties of heavy metal for both of soil and plant were investigated 4 times during of red pepper growth. Plant height and stem diameter of red pepper in sludge treatments except to Pharmaceutical sludge 3 were poor than those of NPK treatment. This result were regarded as an effect of incompleted decomposition sludge which has a lot of organic matter concentration. Amount of total As was increased rapidly Jul. 8. in soil, total Zn Cu Pb Cd were in harvest time, and 1 N-HCl extractable Zn Cu Pb Cd As were in harvest at middle stage and then decreased. Amounts of nitrogen in plant (leaf and stem) were high in Phamaceutical Sludge 1 and fig Manure treatment in early and middle stage because of organic matter and nitrogen concentrations and characteristics. Amounts of Zn, Pb, and Ni in leaf and amount of Zn and Pb in stem were increased in harvest time so that we need to have a concern in detail. Total yield of red pepper was Pig Manure > Phamaceutical Sludge 3 > Phamaceutical Sludge 1 > NPK > Phamaceutical Sludge 2 and Cosmetic Sludge treatment was decreased considerably to compare to others. Amounts of Zn and Cu in green and red pepper in harvest time were higher than the other heavy metals. Finally these results can use to utilize that finding damage on crop for authorization and suitability estimation of raw material of compost.

• Korean Journal of Organic Agriculture
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• v.21 no.4
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• pp.647-657
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• 2013

This experiment was done to evaluate the effects of green manure cropping in green house soil on the changes of soil nutrients and soil microorganisms. The biomass of green manure crop was the highest in ryegrass and nitrogen absorption was the highest in hairy vetch. After cropping, soil phosphate content was the lowest in ryegrass, however, biomass C was the highest of all the green manures. Nitrogen uptake of plant and nitrogen content of the soil after the experiment showed a negative correlation. Total N content of soil was increased in hairy vetch plot, but decreasing tendency showed in the ryegrass and common crabgrass plots. In this results are summarized that green manure cropping greatly reduced salt accumulation in green house.

• Korean Journal of Soil Science and Fertilizer
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• v.23 no.4
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• pp.275-280
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• 1990

In order to obtain the basic informations on the reasonable fertilization and soil management systems for a high soybean yield, both soybean leaves and soils were collected from 24 soybean-cultivated fields in central area of Korea, and analyzed. For this study, soybean leaves and soil were sampled together in July of 1988(growing season), and soil alone in October of 1988 (harvesting season) and April of 1989(sowing season) at each sampling site. The results might be summarized as follows: 1. The soil pH ranged between 4.8 and 6.8. and the pH after harvest decreased to 5.4 which compared with the pH 5.7 of growing season. 2. Both the 1N KCl extractable Al and the 1N $NH_4OAc$ extractable Al in soils were inversely correlated with the soil pH. the former concentration was negligible above pH 5.8. 3. The soil total-N and Bray 1-P after harvest were lower than those of growing season. The Bray 1-P's of sample soils were very high irrespective of sampling time. 4. The exchangeable Ca and Mg in soils even after harvest varied little whereas the exchangeable K decreased with time. 5. The N content in soybean leaves was not correlated with soil total-N, but highly correlated with the K content in soybean leaves. The Mg content in soybean leaves was also highly correlated with Ca content in suybean leaves and exchangeable Mg in soils.

• The Korean Journal of Pesticide Science
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• v.7 no.3
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• pp.182-187
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• 2003

In order to elucidate a degradation characteristics of herbicide mefenacet in soil, the persistence in soils was studied under laboratory conditions for $90\sim120$ days at $28^{\circ}C$. Mefenacet residues were determined from the two soils which pre-treated by sterilization and flooding, respectively. Non-sterilized upland soil was used as a control. When 70 days elapsed from application time, $55\sim63%$ of mefenacet applied were dissipated in control soils. However, $32\sim33%$ of mefenacet applied were dissipated in the sterilized soils and $33\sim35%$ was dissipated in the flooded soils. 까 lese results indicated that the degradation of mefenacet was assumed to be due to microorganism, especially aerobic microbes. In order to elucidate the influence of water content on the persistence of mefenacet in soil, water content in soils was adjusted to 20, 50, and 80% of the water-holding capacity(Field capacity, WHC). The half-life of mefenacet in soil containing 20% and 50% of WHC were 82 and 73 days, respectively, after incubation for 90 days. However, the half-life in soil containing 80% of WHC was shortened to 61 days. These results indicated that degradation of mefenacet in soil was influenced by the activity of soil microorganism, organic matter content and water content.