• Journal of the Korean Society of International Agriculture
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• v.23 no.5
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• pp.507-512
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• 2011

This study was carried out to investigate the chemical characteristics of different organic liquid fertilizer during fermentation at plastic house in Chungbuk Agricultural Research and Extension Service. Chicken dung, soybean meal, and rice bran were used for nutrient sources. The obtained results from this study were summarized as follows; Total nitrogen contained the highest in soybean meal as 55 mg·kg^-1, and phosphate and potassium contained high in chicken dung and rice bran in organic liquid fertilizer materials. The pH of chicken dung was near 7.0, that of soybean meal and rice bran indicated acidity(pH 3.8~4.4). The electrical conductivity of chicken dung consistently increased during fermentation, and that of soybean meal and rice bran increased and decreased early season and increased at late incubation period. Hydrogen sulfide gas occurrence of chicken dung was 3,200 mg·L^-1 at early season and 1,600 mg·L^-1 at late incubation period, and that of soybean meal and rice bran treatments were not or very low concentration of hydrogen sulfide gas during manufacturing period. The nitrogen and calcium content of organic liquid fertilizer were the higher in chicken dung and soybean meal than rice bran. The phosphate and magnesium content of rice bran was the high as 5.6 g·kg^-1 and 1.5 g·kg^-1, respectively. There was no difference in potassium content among the different liquid fertilizers during fermentation.

• Korean Journal of Medicinal Crop Science
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• v.6 no.1
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• pp.16-20
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• 1998

This experiment was conducted to find the most effective organic matters to improve the contents of aromatics and essential oils in root of Anthriscus sylvestylis. Growth of top part was promoted by application of chicken dung with saw dust. The contents of crude protein, fat and fiber were also increased by chicken dung with saw dust. Essential oil content was highest as 0.82% when plants were treated by chicken dung with saw dust. The optimum organic matter showing high yield was chicken dung with saw dust as 276kg per 10a. Twenty two aromatic constituents were identified from root of Anthriscus sylvestylis regardless of organic matter kinds. In particular, aromatic constituents such as sabinene and carboxaldehyde were highest at the application of chicken dung with saw dust as 16.9 and 163.4 % area, respectively.

• Journal of Microbiology and Biotechnology
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• v.25 no.5
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• pp.569-578
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• 2015

Cold water paddy field soils are relatively unproductive, but can be ameliorated by supplementing with inorganic fertilizer from animal waste-based composts. The yield of two rice cultivars was significantly raised by providing either chicken manure or cow dung-based compost. The application of these composts raised the soil pH as well as both the total nitrogen and ammonium nitrogen content, which improved the soil's fertility and raised its nitrification potential. The composts had a measurable effect on the abundance of nitrogencycling-related soil microbes, as measured by estimating the copy number of various bacterial and archaeal genes using quantitative real-time PCR. The abundance of ammonia oxidizing archaea and bacteria was markedly encouraged by the application of chicken manure-based compost. Supplementation with the composts helped promote the availability of soil nitrogen in the cold water paddy field, thereby improving the soil's productivity and increasing the yield of the rice crop.

• Korean Journal of Soil Science and Fertilizer
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• v.30 no.4
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• pp.328-333
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• 1997

A study was conducted to examine the effect of application of Diazinon at different rates in submerged soil under the application of different N fertilizers; urea, ammonium sulfate and organic fertilizer(fermented chicken dung-sawdust mixture). The levels of Diazinon application were equivalent to zero, 350 mg a. i./ha, 700 mg a. i./ha and 1050 mg a. i./ha. To 100 gr of air-dry soil, 10 mg of N, $P_2O_5$ and $K_2O$ and different levels of Diazinon were mixed thoroughly and the soil was submerged in 100 ml of distilled water. The submerged soil was incubated at $30^{\circ}C$ for 50 days. Volatilied ammonia was measured at every 10 days. The amount of ammonia volatilization was greatest in urea treated soil, followed by organic fertilizer and it was the least in ammonium sulfate treated soil. The application of Diazinon at 700 mg a. i./ha increased the volatilization of ammonia greatly in the urea treated soil. Under other fertilizers, the effect of Diazinon application was not remarkable. The increase in the soil pH during the incubation period under different fertilizer treatments tended to increase ammonia volatilization.

• Korean Journal of Organic Agriculture
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• v.18 no.2
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• pp.209-219
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• 2010

This study was carried out to evaluate the effects of applying levels of organic liquid fertilizer (OLF) on growth and fruit quality of hot pepper. The OLF was made with compositions of chicken dung : rice bran : soybean meal (2:1:1). Hot pepper was applied with 5 treatments; control (chemical fertilize), OLF-1.0X (standard applying levels), OLF-0.7X (70% of standard applying level), and OLF-1.3X (130% of standard applying level). The plant height was reduced at 23cm in the OLF-1.0X treatment compared to control of 293cm. The number of hot pepper fruits was significantly increased. The content of capsaicin in the ripened pepper decreased by 23.6% in the OLF-1.0X treatment with $253mg{\cdot}kg^{-1}$ compared with control of $331mg{\cdot}kg^{-1}$, but the content of free sugar increased by 19.5%. The content of capsaicin and soluble solid content in OLF-1.3X treatment were significant different with other treatments. The yield of red pepper in OLF-1.0X treatments increased by 15% with $4,190kg{\cdot}10a^{-1}$ compared to control of $3,643kg{\cdot}10a^{-1}$, and OLF-1.3X and OLF-0.7X treatments showed increase by 10% and 6%, respectively.

• Korean Journal of Soil Science and Fertilizer
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• v.29 no.4
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• pp.342-346
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• 1996

Field experiments were conducted to investigate the mode of changes in exchangeable K contents in the soil under the continued(for three years) application of different levels of K fertilizer(KCl) with and without application of conventional compost(CC) and chicken-dung derived compost (CDC) for red pepper cultivation at two field parcels with different exchageable K contents on Gopyong silty loamy soil. The application of KCl at standard rate for red-pepper resulted in the increase in exchangeable K in the soil after each harvest of the crop. while no application of K and the application of KCl at one half of the standard rate tended to lower the exchangeable K in top soil with the cultivation of the crop. The application of compost in addition to KCl ammplified the difference in exchangeable K in the soil before and after the harvest of each crop. An equation could resonably well predict the exchageable K content in top soil after the years of crop cultivation, under different treatments. were developed.