• Monthly Duck's Village
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• s.195
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• pp.20-23
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• 2019

환경부 고시인 '퇴비액비화기준 중 부수도 기준 등에 관한 고시'에 따라 내년 3월 25일부터 모든 축산농가에 대해 퇴비 부숙도 검사가 의무화된다. 3월 25일 이후에는 반드시 부숙 과정을 거쳐 축산 분뇨를 배출해야 하며, 허가대상 농가의 경우 6개월에 한 번, 신고대상 농가의 경우 1년에 한 번 분석시험기관에 가축 분뇨의 부숙 측정을 의뢰 분석해야 한다. 이를 어길 시 부숙도 부적합 정도에 따라 최소 50만원에서 최대 1,000만원의 과태료를 받게 된다. 축산농가들의 이해를 도와 실질적으로 대비할 수 있도록 퇴비 액비 부숙도 검사 내용과 전국의 부숙도 측정 기관 등을 소개한다.

• Korean Journal of Soil Science and Fertilizer
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• v.24 no.4
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• pp.278-285
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• 1991

This study was conducted to manufacture a good qualified organic fertilizer with cow dung through rapid composting process, and the proposal guideline of the degree of maturity could be estimated with the measurement of final product. It included total nitrogen content of above 2% on an oven-dry material basis, C/N ratio of below 20, CEC of more than about 60 me/100g, ratio of carbon in reducing sugar to the total carbon of below 35%, and temperature in pile of above $60^{\circ}C$. The total nitrogen content, the C/N ratio, and the Paper Chromatographic method couldn't be the guideline to evalute the maturity of cow dung compost. CEC was increased in increased fermentation and it was high in the high fermented temperature plots which were cow dung+ shredded bark in 1988, cow+dung+wood chips in 1989, and cow dung+rice straws in 1990. The ratio of carbon in reducing sugar to total carbon in 1990 was lower in cow dung+saw dust than cow dung+rice straws that was the highest temperature in pile. Generally cow dung was mixed well with saw dust and thus the total carbon of the product was high. The measurement of the temperature in pile seems to be a indirect guideline of maturity.

• Korean Journal of Soil Science and Fertilizer
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• v.33 no.4
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• pp.302-309
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• 2000

These experiments have been conducted to study the effect by microbial inoculums currently on the market of enhancing the decomposition of organic matters. As a result of studying the effect of enhancing the decomposition of rice straw and chicken manure mixed with saw dust treated with commercial inoculums, it was found that the use of inoculums have speeded up the rate of decomposing straws at the early stage. The decomposition rate of rice straws that have speeded up with the use of comcrial inoculums in at early incubation periods has slow down in the later stage while the decomposition rate of chicken manure that has slowed down in the early stage has speeded up at the later incubation. As a result, it is found that there have been no differences between the use of microbial inoculums and control. In the experiment, filamentous fungus is found to have played an important role in decomposing the rice straws and bacteria is considered to have played a greater role in the decomposition of chicken manure mixed with saw dust.

• Korean Journal of Soil Science and Fertilizer
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• v.29 no.2
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• pp.124-129
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• 1996

This experiment has been conducted to find out a effective decomposition method of popped rice hulls which are hard to be decomposed in vitro. It was found that the C/N ratio of 35 was better than the C/N ratio of 20 for improving the decomposition ratio of popped rice hulls. The addition of rice bran accelerated the decomposition of popped rice hulls. The real decomposition rate of popped rice hulls for 10 days was merely 8 percent. This poor decomposition ratio seemed to be come from the chemical constituent of rice hull which has 20 percent of silica content. It was considered that the addition of rice bran speeded up only the decomposition of bran itself by increasing the number of microorganisms. It was also observed that color changes developed from the decomposition of rice hulls proved not to be a yardstick for the degree of decomposition.

• Journal of Animal Science and Technology
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• v.51 no.3
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• pp.249-254
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• 2009

The effect of Mg supplement on the composting of swine manure and the formation of $MgNH_4PO_46H_2O$ (MAP) crystal during composting were examined. Mg source was added at a rate of 1.2 molar ratios to soluble phosphate ($PO_4$) level in swine manure. The temperature profiles and final compost qualities revealed that the Mg source addition didn't retard the decomposition of organic matters. As the added Mg reacted with $NH_4$ and $PO_4$ in manure, creating MAP crystal, the $NH_4$ level was reduced, and this was resulted in low nitrogen lose during the composting. The phosphate level was also decreased with the addition of Mg source, and hence the ratio of orthophosphate to total phosphate (OP/TP) in the final compost was lowered. Therefore, it was assured that supplement of Mg source into the composting materials could enhance the quality of compost by preserving nourishment and converting it into a slowly releasing fertilizer. X-Ray diffraction examination of the final compost showed that a distinct MAP crystal was formed during the composting, and the crystal mainly existed with the compost particle size less than 2.8 mm and over 2/3 of nourishment of the final compost was found in those particles.

• Journal of the Korea Organic Resources Recycling Association
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• v.21 no.2
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• pp.79-87
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• 2013

Effects of pig manure with various composting periods(0, 15, 30, 50, 80 days) on feeding rate, biomass, cocoon production of earthworm(Eisenia fetida) population and physicochemical property of vermicast produced from pig manure were investigated. The feeding rate of earthworm was increased with longer composting period of pig manure. But the biomass production of earthworm population was highest upon the pig manure composted for 30 days. Upon the pig manure composted for 80 days, the biomass was severely reduced. Cocoon production was decreased with longer composting period and especially lower on the pig manure composted for 80 days. Values of pH, EC, C/N ratio of vermicasts produced from pig manure composts were lower than those of pig manures. And the organic material contents of vermicasts were uniformly reduced irrespective of composting duration of pig manure, whose values were 35.9-39.8%. From these results, the optimum composting period of pig manure for vermicomposting could be 15-30 days. And the application of vermicomposting upon the composted pig manure could be an efficient way for the treatment of pig feces, which can stabilize and recycle the organic wastes more rapidly than the conventional composting method.

• Monthly Duck's Village
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• s.193
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• pp.32-35
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• 2019

• Monthly Duck's Village
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• s.202
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• pp.35-39
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• 2020

• Monthly Duck's Village
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• s.206
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• pp.49-51
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• 2020

• Monthly Duck's Village
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• s.201
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• pp.37-39
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• 2020