• 한국축산시설환경학회지
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• 제11권2호
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• pp.135-146
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• 2005

본 연구는 돈 분뇨 액비에 미생물 첨가가 배추의 발아지수에 미치는 효과를 구명하기 위해서 수행하였다. 돈 분뇨 액비는 107일 동안 폭기와 무폭기 상태로 액상비료를 제조하여 공시하였고 미생물 첨가는 $0.05\%,\;0.1\%,\;0.2\%,\;0.3\%$ 수준으로 하였다. $0.05\%$ 미생물 접종 처리구에서 식물 독성이 낮고 발아지수가 높게 나타났다. 첨가수준별 돈분 액비 이용시험에서 초기 돈 슬러리의 액비성상은 T-N 2,873 ppm, T-P 753 ppm, $NH_4-N$ 1,441.6 ppm, $NO_3-N$ 16.48ppm으로 50일이 되면서 폭기조건에서 T-N 3,672 ppm, T-P 164 ppm, $NH_4-N$ 183.87 ppm, $NO_3-N$ 21.97 ppm로 변화하였으며, 무폭기 조건에서 T-N 1,261 ppm, T-P 68 ppm, $NH_4-N$ 161 ppm, $NO_3-N$ 16.87 ppm로 나타났다. 미생물을 처리하지 않고 107일동안 폭기조건과 무폭기 조건으로 액비화한 시료의 발아지수는 각각 83과 40.4이였다. 돈 분뇨 액비를 무산소 제조시 $40\%$ 이상, 호기제조시 $50\%$ 이상의 발아지수가 개선되었다. 이와 같은 결과는 액비제조 처리가 무산소 제조보다는 호기제조 처리가 작물에 양호한 것으로 판단되어지며 이는 호기처리시 총질소의 함량을 높게 유지할 수 있도록 하는 결과인 것으로 사료된다.

• 한국환경농학회지
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• 제29권4호
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• pp.354-361
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• 2010

Soil physico-chemical properties and microbial densities are affected by organic sources and soil amendment applied to improve soil environments or quality. Generally organic fertilizer effects on forage crops yield and soil properties are partly due to changes of soil composition. We investigated the effects of swine slurry (SS), swine slurry composting-biofilteration(SCB) and chemical fertilizer(F) with gypsum(G) combinations on soil physico-chemical properties and yields of summer forage crop in the Sukmoon reclaimed tidal land in Korea. The forage crops used in this experiment were corn and sorghum$\times$sudangrass hybrid(hereafter sorghum). Our results showed that the soil physico-chemical properties in the combined (F+G, SS+G, SCB+G) treatments increased contents of organic matter and exchangeable $Ca^{2+}$, but exchangeable $Na^+$, $K^+$ and $Mg^{2+}$ reduced to 1-10% for two forage crops, compared to non-combined (F, SS, SCB) treatment. The density of soil microorganism such as bacteria, actinomycetes and fungi, increased significantly by SS+G and SCB+G treatments. This means that treatment of combined organic fertilizer with G lowered salinity levels and improved with microbial growth. The combined treatments also increased the total yields 2.3-6.2% for corn and 2.0-8.7% for sorghum, compared with non-combined treatment. This experiment suggests the combined treatments could increase the total yields of summer forage crops and change of soil physico-chemical properties in the Sukmoon reclaimed tidal land in Korea.

• 한국초지조사료학회지
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• 제21권4호
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• pp.181-190
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• 2001

This study was conducted to investigate the effect of swine liquid manure(SLM) and phosphorus fertilizer from September, 1998 to July, 1999 on the soil fertility on Italian ryegrass field, Cheju volcanic ash soil. pH(lst investigated), Mg (2nd investigated) and Cu content (2nd investigated) on soil grown by Italian ryegrass were significantly increased by an increase of fertilizer P(P

• 한국토양비료학회지
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• 제44권6호
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• pp.1085-1088
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• 2011

Heavy metal concentration as well as chemical composition were surveyed in commercial liquid pig manure to provide the basic information for mitigation research of hazardous material to agro-product. Seventy-five samples of liquid pig manure were collected and analyzed from 2009 to 2010 nationwide. Average contents of T-N, $P_2O_5$, and $K_2O$ were 0.29%, 0.08%, and 0.11%, respectively. The contents of heavy metals ranged from 0.001~0.083 for As, 0.001~0.108 for Cd, 0.002~0.495 for Cr, 0.07~47.8 for Cu, ND~0.005 for Hg, 0.035~1.033 for Ni, ND~0.291 for Pb, and $0.75{\sim}342.4mg\;L^{-1}$ for Zn, respectively. It was noted that among 75 samples, only four samples exceeded the Zn guideline ($130mg\;L^{-1}$) of liquid fertilizer derived from livestock manure but others were not exceeded the regulation.

• 현장농수산연구지
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• 제18권1호
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• pp.37-45
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• 2016

In order to obtain the optimum application time of liquid pig manure (LPM) for growth and nutrient contents of green manure crops (GMCs), the growth and nutrient characteristics of GMCs were evaluated under different application times of LPM in pot experiment. GMCs were sown in Sept. 1, 2012. LPM was treated in soil surface at 15 days before sowing (15DBS), at 0 days after sowing (ASD) and at 25 days after sowing (25DAS). At 60 days after seeding, plant heights of barley and hairy vetch were higher in 15DBS treatment than those in other treatments. Biomass of barley was higher in the order of 15DBS (50.2g plant^-1) > ASD (49.8g plant^-1) > 25DAS (48.5g plant^-1) > control treatment (37.5g plant^-1). Biomass of hairy vetch in 15DBS treatment was higher than that in other treatments. Nutrient contents of barley and hairy vetch were not different regardless of LPM application times. On the other hand, the amounts of nutrients uptake in 15DBS treatment were higher than those in other treatments. Therefore, in considering growth status and nutrient contributions of GMC, the optimum application time of LPM was 15DBS.

• 한국환경농학회지
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• 제42권4호
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• pp.418-426
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• 2023

This study focused on nitrous oxide, a major greenhouse gas produced in agricultural settings through bacterial nitrogen oxidation in aerobic soil. Nitrogen fertilizer in farmland is identified as a primary source of nitrous oxide. The importance of reducing excess nitrogen in soil to mitigate nitrous oxide production is well-known. The study investigated the use of liquefied pig manure as an alternative to urea fertilizer in conventional agriculture. Results showed a more than two-fold reduction in nitrous oxide emissions in pepper cultivation areas with liquefied pig manure compared to that with urea fertilizer. The population of Nitrosospira, a nitrous oxide-producing bacterium, decreased by over 10% with liquefied pig manure. Additionally, nirK and nosZ, which are related to the denitrification process, significantly increased in the urea fertilizer group, whereas levels in the liquefied pig manure group resembled those with no nitrogen treatment. In conclusion, the experiment confirmed that liquefied pig manure can serve as an eco-friendly nitrogen fertilizer, significantly reducing nitrous oxide production, a major contributor to the atmospheric greenhouse effect.

• 한국토양비료학회지
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• 제40권4호
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• pp.242-248
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• 2007

돈분뇨 슬러리와 음식물쓰레기 자원화 과정에서 발생하는 액상물의 혼합 액비화를 통한 액비의 비료적 특성 및 액비의 악취 저감 특성을 검토하였다. 발효가 진행됨에 따라 음식물쓰레기 액상물 혼합비율이 높은 처리구에서 pH가 높아졌고 돈분뇨 슬러리 혼합비율이 높은 처리구에서는 낮아졌고, EC는 180일째에 모든 처리구에서 $21{\sim}23dS\;m^{-1}$로 안정되었다. 180일간 발효시키고 난 후에 질소성분은 최초 성분량의 20%까지 저하되었는데, 음식물쓰레기 액상물 50% 이상 혼합한 구에서는 비료공정규격에 미달되었다. 발효가 진행되면서 유기물, 인산, 석회, 고토성분은 감소되었고 칼리, 염분의 함량은 증가하였는데, 염분의 증가는 액비 발효과정 중 수분 증발에 따른 농축효과에 기인하였다. 악취 성분으로서 $NH_3$는 발효 초기 30일째까지 많이 발생하다 점차 감소하였고 돈분뇨 슬러리 혼합비율이 높을수록 오래까지 지속적으로 발생되었고, $R-NH_2$의 경우는 $NH_3$에 비해 발효기간이 길어져도 지속적으로 발생하였다. $C_2H_5SH$는 돈분뇨슬러리와 혼합처리구에서만 발생하였는데, 발효기간 180일이 지나도 지속적으로 발생되었다. 관능검사 결과 역시 돈분뇨슬러리 혼합처리구에서는 발효기간 180 일이 지나도 악취도가 1 이하로 저하되지 않았다. 현행 비료 공정규격상 악취강도 기준이 2 이하인 점과 질소성분의 휘산으로 인한 액비 중 T-N 성분 저하 등을 고려했을 때 이의 제어연구가 수행될 필요가 있었다.

• 한국환경농학회지
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• 제33권3호
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• pp.164-168
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• 2014

BACKGROUND: Increase in application of liquid pig manure(LPM) in agriculture as nutritional source has become a social issue due to its influence on water quality. Also, proper application methods have not been developed with respect to indigenous properties of LPM and soil physical properties. Therefore, we conducted this experiment to observe the infiltration characteristics and distribution of dissolved organic compounds of LPM in soils having different soil textures. METHODS AND RESULTS: To do this experiment, we collected three different soils and LPM. We analyzed the physical and chemical properties of both soils and LPM to determine the dilution ratios of LPM. The LPM diluted to 4 different ratios with distilled water was applied to the top of soil column. Infiltration rates were observed by time and depth until the amount of effluent collected from the bottom of the soil columns were stabilized while maintaining the hydraulic head 3 cm above the soil column. The results showed that infiltration rates increased with increasing dilution ratios in the order of sandy, loamy sand, and sandy loam. The time required to reach steady state was increased with decreasing sand contents clay. CONCLUSION: The size and amount of the dissolved organic compounds in LPM that can determine the efficiency as fertilizer and environmental problems as nonpoint pollution source in water quality have not been investigated with respect to behavior and transport of them in soil. Therefore, it requires further research how we can properly apply LPM as valuable fertilizer substitute for inorganic fertilizers.

• 한국토양비료학회지
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• 제43권4호
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• pp.466-470
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• 2010

최근 축산용 항생제를 함유한 축산분뇨 퇴액비를 토양에 시용하였을 때 식물체가 항생제를 흡수할 수 있음을 보여주는 연구결과가 유럽과 미국에서 발표되었다. 클로르테트라싸이클린, 타이로신, 설파메타진 등 3종의 항생제를 처리한 돈분 액비를 처리하고, 상추, 토마토, 헤어리베치 등 3종을 기른 다음 식물체의 항생제 함량을 분석하여 항생제를 처리하지 않은 대조구와 비교하였다. 클로르테트라싸이클린 22.9 mg $L^{-1}$, 타이로신 27.8 mg $L^{-1}$, 설파메타진 32.4 mg $L^{-1}$ 수준의 항생제를 처리했을 때, 생체중 기준으로 클로르테트라싸이클린은 3.4 ng $g^{-1}$ 이하, 타이로신 20.1 ng $g^{-1}$ 이하, 설파메타진은 20.9-63.3 ng $g^{-1}$가 검출되었다.

• 한국토양비료학회지
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• 제44권5호
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• pp.773-778
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• 2011

Long-term continuous application of livestock by-products to agricultural land may adversely affect the soil characteristics and the crop yield. Five year term study from 2007 was carried out to assess the effects of repeated application of low-concentration swine slurry on soil chemical properties including phosphate and heavy metal contents and yield of tomato (Lycopersicon esculentum) and cucumber (Cucumis sativus L.) in a greenhouse. Treatments were conventional chemical fertilizers and three application rates of low-concentration swine slurry (Slurry composting and biofiltration, SCB): 50%, 100%, and 200% of recommended nitrogen fertilization. For swine slurry treatment of 50% nitrogen, deficient nitrogen was supplemented with urea fertilizer. The soil phosphorus and heavy metal contents after five year continuous application of swine slurry were not significantly higher than those of chemical fertilizer use. Repeated application of the swine slurry alone for five years resulted in relatively high soil exchangeable potassium and sodium compared with chemical fertilizer treatment. Contents of heavy metals in leaves of tomato and cucumber did not show significant difference among treatments. Yields of the crops for the swine slurry were not significantly different from that of chemical fertilizer. The results imply that continuous application of the swine slurry may not influence levels of soil phosphate and trace elements in greenhouse soils but could accumulate potassium and sodium in the soil.