• 한국초지조사료학회지
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• 제13권4호
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• pp.268-273
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• 1993

본 시험은 초지조성시와 관리시에 시용하는 인산질 비료의 시용이 초지식생, 목초 및 토양의 무기물함량에 미치는 영향을 구명코자 무시용구의 3처리를 난괴법 3반복으로 포장 배치하여 1989년 9월부터 1991년 10월까지 수원 근교에서 수행되었던 바, 그 결과를 요약하면 다음과 같다. 1. 인산질 비료 무시용구의 식생은 불량하였으며 인산시용에 의해서 두과 목초의 비율이 증가되었는데 특히 초지관리시의 인산효과가 현저하였다. 2. 목초의 무기물 함량중 질소, 인, 칼슘, 마그네슘 등은 인산 시용구에서 증가되었고 K/Ca+Mg 당량비는 낮아졌으나, K 및 Ca/P는 일정한 경향을 보이지 않았다. 3. 인산 시용에 의해 표토(0∼10cm)의 유효인산함량. Ca및 Mg의 치환용량은 현저히 증가되었으나 칼륨은 일정한 경향이 없었다. 4. 산지 초지조성 및 관리시에 인산질 비료의 시용은 필수적이며 특히 초지관리시의 지속적인 시용은 조성시의 무시용을 거의 보완할 수 있었다.

• 한국토양비료학회지
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• 제47권6호
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• pp.558-562
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• 2014

Cover cropping and liquid manure application are considered as effective ways to replace the use of chemical fertilizer in orchard. This study was conducted to investigate the effect of cover crop species and liquid manure application rate on green manure production, leaf mineral content, fruit quality and soil chemical properties in pear orchard. The treatments include rye and hairy vetch as cover crops, two liquid manure application levels based on N and $K_2O$ requirement on each cover crop species, and chemical fertilizer as control. Green manure production was higher in hairy vetch than in rye. K content of pear leaves and soil exchangeable K content increased in N based liquid manure application treatments. The yield was higher in rye + liquid manure and fertilizer treatments, and fruit quality was not different between the treatments. Taking all of these into account, rye + $K_2O$ requirement-based liquid manure application is recommended in pear orchard for not only sufficient nutrient supply but also prevention of any problem related with soil $K_2O$ accumulation in pear orchard in long-term perspective.

• 한국토양비료학회지
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• 제20권4호
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• pp.309-314
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• 1987

화력발전소(火力發電所)에서 부생(副生)되는 Fly ash의 비료자원(肥料資源) 가능성(可能性)을 검토(檢討)하기 위해 국내산(國內産) 무연탄(無煙炭) 및 도입(導入) 유연탄(有煙炭)의 회(灰)에 대한 광물학적(鑛物學的) 특성(特性)을 분석(分析)하였다. Fly ash는 규소(珪素), 알미늄이 주성분(主成分)으로서 전형적(典型的)인 규산(珪酸)알미늄 광물(鑛物)의 특성(特性)을 지니고 있었다. 그러나 비료자원(肥料資源)으로서 규소(珪素) 및 가리(加里)는 식물(植物)에 쉽게 이용(利用)될 수 없는 성분(成分)이었다. X-선회석분석(線回析分析), 시차열분석(示差熱分析), 적외선분광분석(赤外線分光分析) 및 Scanning Electron Micrography 분석(分析)에 의하여 새로운 광물(鑛物)인 Mullite의 형성(形成)을 확인(確認)하였으며 괴상(塊狀)의 규산물질(珪酸物質)이 생성(生成)되었다.

• 한국초지조사료학회지
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• 제20권2호
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• pp.85-90
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• 2000

Forage sorghum (Sorghum bicolor x S. bicolor) was cultivated for knowing the effect of alum sludge application on its root growth in a mountainous site, Kumsan. And the results obtained are as follows: The available P205 content in the soil seemed to decrease with the advance of level of alum sludge application. And plant P content decreased with the advance of sludge application without phosphate fertilizer. With phosphate fertilizer, root number of the forage was greater than that without the fertilizer. The root growth of forage sorghum was the highest with NPK and the least in control and alum application, and it is not recommended to apply NPK and alum together for the growth of the forage root. (Key words : Root, Sorghum, Mineral, Sludge, Kumsan)

• The Korean Journal of Ecology
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• 제7권3호
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• pp.170-176
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• 1983

The results obtained from the experiments conducted to investigate Cruciferae plants in rape dependent on the amount of applied fertilizer in aspects of mineral nutrient uptake and on the effects of the composition of oil quality are as follows: Absorption of mineral nutrients in the respective pars of the plant body was high in nitorgen in the order of leaf and stem

• 생물환경조절학회지
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• 제13권4호
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• pp.240-244
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• 2004

순환식 양액재배시 계면활성제가 무기이온 흡수 증진에 미치는 영향을 알아보고자 상추의 생육, 광합성율, 증산율 및 무기이온 함량을 분석하였다. 상추 생육은 $0.3mg{\cdot}L^{-1}$ PVA-95처리에서 가장 높았으며, l/2배액에서 재배된 상추의 생육도 양호하였다. 칼슘 함량이 증가된 $0.3mg{\cdot}L^{-1}$ CLS 처리의 상추는 생육이 낮음에도 불구하고 높은 증산율과 광합성율 및 엽내 카리, 칼슘 및 마그네슘 함량이 높았다. 따라서 높은 생육량과 비료 절감 효과가 인정된 PVA-95 처리와 CLS 처리에 의한 엽내 무기 성분 함량 증가가 인정됨에 따라 수경재배 상추의 고품질 생산에 유용하게 사용 가능하리라고 판단된다.

• 한국초지조사료학회지
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• 제18권1호
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• pp.19-26
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• 1998

The effects of different fertilizer management on herbage production and botanical composition were determined. Field experiments were conducted during 1991 - 1993 on sandy loam soil at Allgiu south western Germany under variabling fertilizer management; cattle slurry, NPK, PK chemical fertilizer management and zero fertilization. The dry matter yield of forage was the highest in the plot of mineral fertilizer and lowest in the plot of without fertilization. The dry matter yield of P-K application was higher by 1.2 ton than that of without fertilization. The content of crude protein, crude fibre, digestible dry matter yield, net energy and nitrogen content of plants was not significantly different among different fertilizer management. N uptake of plants was in the order NPK chemical fertilizer (347kg N/ha) > cattle slurry (337kg N/ha) > P-K chemical fertilizer (325kg N/ha) > without fertilization (3 15kg N/ha).

• 농업과학연구
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• 제42권4호
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• pp.319-324
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• 2015

An estimation of the requirement of minerals based on growth stage and cropping pattern is very important for greenhouse zucchini. This study was performed at farmer's field which was applied with a fertigation system and a semi-forcing cultivation from Feb. to July in 2014, and nitrogen levels were set up with x0.5, x0.75, x1.0 and x1.5 of the NO3-N-based soil-testing recommendation for zucchini cultivation. Top dressing of nitrogen (basal : top = 4 : 6) and potassium (basal : top = 3 : 7) was applied with an interval of every two weeks from two and six weeks after transplanting, respectively, and phosphorus was totally supplied with basal dressing. The nitrogen uptake was the order of x1.0, x0.75, x1.5 and x0.5, phosphorus, x1.0, x0.75, x0.5 and x1.5, and potassium, x0.75, x1.0, x1.5 and x0.5. From these results, it was suggested that highest mineral uptake could be reached between x0.75 and x1.0 of the NO3-N-based soil-testing recommendation. In conclusion, nutrient management based on the growth stage was proven to be better method for favorable growth and yield of zucchini.

• 한국초지조사료학회지
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• 제20권2호
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• pp.131-138
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• 2000

This experiment was carried out during the period from September, 1997 to October, 1998 to determine the effect of fermented saw-dust pig manure (FSP) application on the herbage production on a mixed pasture in the Cheju brown volcanic ash soil. Split plot design (main plot: 3 nitrogen application levels of 0, 150 and 300 kgiha; sub plot: 4 pig sawdust manure levels of 0, 3, 6 and 12 tonha) was used. Plant height and dry matter yield increased significantly with an increase of nitrogen and FSP level. There was no difference in the botanical composition of grasses as affected by FSP application level, but herbage yields of grass species were increased by nitrogen application compared to that without nitrogen application. Botanical composition of white clover decreased with an increase of nitrogen application, but increased with an increase of FSP application level. Percentages of weeds were not affected by application rates of chemical nitrogen fertilizer and swine manure in the mixed species pasture. Nitrogen, phosphorus, and potassium contents of species in the pasture significantly increased with increasing application rates of nitrogen fertilizer. In conclusion, it would be an optimum to apply 150 kgha of inorganic chemical fertilizer and plus either 3 or 6 toniha of fermented swine manure with sawdust for optimum production of mixed pasture on Cheju Island. (Key words : Herbage production, Botanical composition, Morphology, Plant mineral contents)

• 한국토양비료학회지
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• 제44권4호
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• pp.551-558
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• 2011

The aim of this study was to know whether leaf nitrate can be a substitute of total leaf N to justify plant N status and how nitrate influences macro elements uptake and physiological parameters of tomato plants under different nitrogen levels. Leaf nitrate content decreased in low N, while showed similar value with the control in high N, ranging from 55 to $70mg\;g^{-1}$. Differences in nitrate supply led to nitrate-dependent increases in macro elements, particularly cations, while gradual decrease in P. Physiological parameters, photosynthesis rates and antioxidants, greatly responded in N deficient conditions rather than high N, which didn't show any significant differences compared the control. Considering nitrogen forms and physiological parameters, total-N in tomato plants represented positive relation with growth (shoot dry weight), nitrate and $CO_2$ assimilation, whereas negative relation with lipid peroxidation.