• Title, Summary, Keyword: Compost Quality

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Effect of Composts upon the Rice Quality (퇴비 시용이 미질특성에 미치는 영향)

  • 이용환;소규호;황광남;호교순
    • Korean Journal of Organic Agriculture
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    • v.6 no.1
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    • pp.117-125
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    • 1997
  • For the environmental protection, it is more desirable to use compost rather than chemical fertilizer. So in this paper, the effects of compost upon the rice quality were investigated with Hwajin Rice as the test variety. The rice quality and physicochemical characteristics were examined and the resrlts are as follows. As to the rice quality, the rate of polished rice was high in the non-fertilizer and the compost plot, the degree of transparency was high in the order of the traditional, the compost+urea, the compost and the non-fertilizer plot. The amylose content (one of the physicochemical characteristies of the rice), the rate of Mg/K, and the adhesivity and the cohesion power (charateristies of texturogram which show the density of boiled rice) were also high in the compost polt. Among the amylogram characteristics, the gelatinization temperature was lowest in the compost plot ; the lowest and the highest degree of viscosity and the break down were also inclined to be higher in the compost plot than in the traditional plot. After the soil test, the components of available phosphorus, organic matters, calcium, magnesium, potassinm and silicate increased in the soil as compared with those before test.

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Characteristics of Compost Produced from the Composting Facility at Nanjido (난지도 퇴비화시범시설에서 생산되는 퇴비의 품질특성)

  • Namkoong, Wan;Kim, Joung-Dae
    • Journal of the Korea Organic Resources Recycling Association
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    • v.5 no.2
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    • pp.57-64
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    • 1997
  • This study was performed to investigate the characteristics of compost produced from the composting facility at Nanjido. The capacity of the facility is 10 ton/day. Feed material was food waste generated in Seoul. Moisture content of the compost product was 31% and conductivity was 2.6 mmhos/cm. The compost product met Korean quality standards and EC quality standards for VS and C/N ratio. In case of TOC and TKN, they were met with Japan quality standards. The water soluble-C/N ratio finally reached about 5 based on dry compost. The color of compost product was dark brown. The product had earthy smell. Heavy metal contents of the compost were below Korean quality standards by wet basis.

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Development of Guidelines for Animal Waste Land Application to Minimize Water Quality Impacts (축산분뇨 농지환원을 위한 적정관리방안)

  • 홍성구
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.44 no.5
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    • pp.136-146
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    • 2002
  • Land application of manure compost is considered one of the widely-used animal waste management practices. Many livestock farms adopt composting for their animal waste disposal and apply the compost to crop fields. While standard rates have been established based on researches with respect to land application of manure compost recently, there have been few discussions on water quality impact of the application. Water quality impact should be taken into account in land applications of manure compost. In this study, management practices were proposed based on the investigation of water quality of leachate from manure compost under rainfall simulation, field studies, and monitoring runoff water quality from farm fields after land application of animal waste. The concentrations of major water quality parameters of the leachate were significantly high, whereas those of runoff from soils after tillage for soil incorporation, were not affected by the application based on a series of experiments. Runoff water from farm fields after land application also showed high concentrations of pollutants. Appropriate management practices should be employed to minimize pollutant loading from manure applied fields. Proposed major management practices include 1) application of recommended amounts, 2) proper tillage for complete soil and manure incorporation, 3) field management to prevent excessive soil erosion, 4) complete diversion of inflow into the field from outside, 5) implementation of vegetative buffer strips near boundaries, and 6) prevention of direct discharge of runoff water front fields Into streams.

Characteristics of compost produced in food waste processing facility (음식물류 폐기물 퇴비화시설에서 생산된 퇴비품질 특성)

  • Lee, Chang-hoon;Park, Seong-jin;Kim, Myeong-sook;Yun, Sun-gang;Ko, Byong-gu;Lee, Deog-bae;Kim, Sung-chul;Oh, Taek-Keun
    • Korean Journal of Agricultural Science
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    • v.42 no.3
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    • pp.177-181
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    • 2015
  • Food waste has been widely considered as a recycling resource to be applied to agricultural lands due to the effects of organic matter and nutrient for plant productivity. but the maturity and salt concentration in the compost produced from food waste processing facilities should be considered firstly, which was little information on compost quality produced from food waste treatment facility. In this study, we examined actual situation of food waste processing facility on the composting of food waste and evaluated the characteristics of composts produced from food waste processing facilities. The quality of composts was analyzed on the basis of the criteria of fertilizer processing manual. The 46% of food waste treatment facility registered composting produced actually the compost mixed with food waste or animal waste. The compost maturity and salt concentration as indicators of the quality of compost were not met 46.8% of composts collected from food waste processing facilities to the criteria of fertilizer processing manual. Also, 15.6%(moisture) were not satisfied with the criteria. In conclusion, the compost produced from food waste processing facilities is firstly required with better compost maturity and reduced salt concentration in order to use to agricultural lands as an amendment.

Effects of Compost Mixed with Microorganism Compost Fermented on the Seedlings Growth of Tomato and Red Pepper (미생물부숙퇴비의 상토 혼합처리가 토마토, 고추 유묘의 생장에 미치는 영향)

  • 김홍기;서범석;정순주
    • Korean Journal of Organic Agriculture
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    • v.5 no.2
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    • pp.125-140
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    • 1997
  • This experiment was carried out to investigate the effects of compost mixed with microorganism compost fermented for the production of high quality plug seedlings of tomato and red pepper. The results are summarized as follows. As a result of compost analysis, EC value was increased with increment of microorganism compost supplemented but lowered gradually in the late period of seedlings growth, pH value of microorganism compost fermented was 9.3 which is strong alkalinity. In the plot of 30 percent of microorganism compost fermented early growth of tomato seedlings was better in terms of plant height, leaf area and total dry weight. However, early growth of red pepper seedlings was shown in the plot of supplemented with 20 percent of microorganism compost fermented. The higher the mixing rate over 60 percent of micrroganism compost fermented to the soil used retarded the seedlings growth regardless of tomato and red pepper.

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Development of Composting Technology in Animal Waste Treatment - Review -

  • Haga, K.
    • Asian-Australasian Journal of Animal Sciences
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    • v.12 no.4
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    • pp.604-606
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    • 1999
  • Solid animal wastes in Japan are treated mainly by composting. The composting process under controlled conditions is able to convert the wastes into high-quality organic fertilizer. Various types of composting facilities with/without forced aeration and turning device are available. Characterization of the maturing process during composting was studied, to improve the quality of compost and to make the degree of maturity. Recycling of animal wastes as compost without any environmental pollution will be closely related to the development of sustainable agriculture with organic fertilizer in Japan.

Effect of Chemical Fertilizer and Compost on Soil Physicochemical Properties, Leaf Mineral Content, Yield and Fruit Quality of Red Pepper (Capsicum annuum L.) in Open Field

  • Lee, Seong Eun;Park, Jin Myeon;Park, Young Eun;Lim, Tae Jun
    • Korean Journal of Soil Science and Fertilizer
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    • v.48 no.6
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    • pp.683-688
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    • 2015
  • Nowadays, sustainable and environment-friendly agriculture has become an important issue all around the world, and repeated applications of mineral and/or organic fertilizer will probably affect mineral nutrient dynamics in soil in the long term but only a limited number of observations are available. This study was carried out to investigate whether there is any influence of different fertilizer management for red pepper (Capsicum annuum L.) cultivation on soil physicochemical properties, leaf mineral content, yield and fruit quality in the aspect of long-term practice in open field condition. NPK, NPK+compost, compost only, and unfertilized control plot were included in the treatments. The application of chemical fertilizer and/or compost repeated annually for 17 years from 1994 to 2011. Soil organic matter content was higher in compost treatments than in no-manure treatments. Available phosphate and the yield of red pepper were highest in NPK+compost treatment followed by NPK (chemical fertilizer), compost, and control. The results indicate that in the long term, nitrogen supply is still needed for increasing red pepper yield, but reduction in the use of chemical fertilizer could be also possible with the proper application of compost.

Nondestructive determination of humic acid in compost by NIRS

  • Seo, Sang-Hyun;Han, Xiao-Ri;Cho, Rae-Kwang;Park, Woo-Churl
    • Proceedings of the Korean Society of Near Infrared Spectroscopy Conference
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    • pp.1623-1623
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    • 2001
  • Composting is a biological method used to transform the organic waste into stable, humified organic amendments. Humification is indicated as the key factor in improving the quality of compost, because of the importance of humic substances to soil ecology, fertility and structure, and their beneficial effects on plant growth The compost constituents vary widely, however, the degree of maturity is very important factor in compost quality. So this experiment carried out to determine the rapid estimation of the quality in cattle, pig, chicken and waste composts using near infrared reflectance spectroscopy(NIRS). Near infrared reflectance spectra of composts was obtained by Infra Alyzer 500 scanning spectrophotometer at 2-nm intervals from 1100 to 2500nm. Multiple linear regression(MLR) or partial least square regression (PLSR) was used to evaluate a NIRS method for the rapid and nondestructive determination of humic acid contents in composts. The results summarized that NIR spectroscopy can be used as a routine testing method to determine quantitatively the humic acid content in the compost samples ondestructively. Especially, we supposed that absorbance around 2300nm is related to humic acid as a factor of compost maturity. However the NIR absorption approach is empirical, it actually requires many combinations of samples and data manipulations to obtain optimal prediction.

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Substrate Quality Effects on Decomposition of Three Livestock Manure Composts with Similar Stability Degree in an Acid Loamy Soil

  • Lim, Sang-Sun;Jung, Jae-Woon;Choi, Woo-Jung;Ro, Hee-Myong
    • Korean Journal of Soil Science and Fertilizer
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    • v.44 no.4
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    • pp.527-533
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    • 2011
  • Decomposition of compost applied to soils is affected basically by its biological stability; but, many other chemical properties of the compost may also influence compost organic-C mineralization. This study was conducted to investigate the principal substrate quality factors of composts that determine C mineralization of compost with similar stability degree (SD). Three composts samples with similar SD but different chemical properties such as pH, C/N, $K_2SO_4$-extractable C, and molar ratio of $NH_4^+$ to $NO_3^-$ were mixed with an acid loamy soil and $CO_2$ emission was monitored during the laboratory incubation for 100 days. Temporal pattern of cumulative compost organic-C mineralization expressed as % of total organic C ($C_{%\;TOC}$) followed double exponential first order kinetics model and the $C_{%\;TOC}$ ranged from 4.8 to 11.8% at the end of incubation. The pattern of C%TOC among the composts was not coincident with the SD pattern (40.1 to 58.6%) of the composts; e.g. compost with the lowest SD resulted in the least $C_{%\;TOC}$ and vice versa. This result indicates that SD of compost can not serve as a concrete predictor of compost mineralization as SD is subject not only to maturity of compost but also to characteristics of co-composting materials such as rice hull (low SD) and sawdust (high SD). Meanwhile, such pattern of $C_{%\;TOC}$ collaborated with pH, C/N, $K_2SO_4$-extractable C, and molar ratio of $NH_4^+$ to $NO_3^-$ of the composts that are regarded as chemical indices of the progress of composting. Therefore, for better prediction of compost mineralization in soils, it is necessary to consider both SD and other chemical indices (pH, C/N, and molar ratio of $NH_4^+$ to $NO_3^-$).

Effect of Compost Application Level on Seedling Growth of Panax ginseng C. A. Meyer

  • Yeon, Byeong-Yeol;Hyun, Dong-Yun;Hyun, Geun-Su;Park, Chun-Geun;Kim, Tae-Soo;Cha, Seon-Woo;Lee, Sung-Woo
    • Korean Journal of Medicinal Crop Science
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    • v.15 no.2
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    • pp.138-141
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    • 2007
  • Good quality seedlings produced in the seedbed of Yangjik, traditional seedling cultivation, is one of the most important factors in determining the yield and quality of $4{\sim}6-year-old$ ginseng. This study was carried out to substitute Yacto, traditional organic fertilizer, for economical compost in the cultivation of seedling by fertilizing relatively little amount of compost into seedbed soil. Bulk density and solid phase were decreased in physical properties of seedbed soil, while air phase and porosity were increased by more addition of compost. When the amount of applied compost in seedbed soil was above $8{\ell}$ per Kan, the contents of nutrient were exceeded the range of optimal standard for ginseng cultivation. Chlorophyll content and stem length were increased by more addition of compost, while the length and the width of leaves showed the highest value at the application level of $8{\ell}$ per Kan. Heat injury was also increased distinctly above the application level of $8{\ell}$ per Kan. The number of first grade seedlings and usable seedlings, and fresh root weight per plant showed the peak at application level of $8{\ell}$ per Kan, respectively. Fertilizing the compost of $8{\ell}$ per Kan into seedbed soil was the optimal amount for producing the good quality seedlings.