• Asian-Australasian Journal of Animal Sciences
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• 제11권3호
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• pp.272-276
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• 1998

Sheep and goats in Pakistan have not been able to produce to the best of their potential. This may primarily be attributed to under feeding and malnutrition. Ranges have been depleted due to overgrazing and mismanagement and are not in position to feed the existing small ruminant population. To overcome the shortage of good quality fodder and balanced feed supply, the alternate means like cereal straws and other crop residues are being commonly used. Sunflower crop residues like stalks and heads provide a good quality forage for livestock. These crop byproducts are rich in crude protein and lower in crude fibre. Their inclusion in the diet of small ruminants at 20, 30 and 40 percent levels in ration has shown significantly (p < 0.05) increased feed intake and weight gain. Daily feed intake was 1,130, 1,180 and 1,750 g for sunflower crop residue, soybean crop residue and wheat straw, respectively, when added at the rate of 20 percent in the ration. The drymatter digestibility of sunflower, soybean crop residues and wheat straw was also comparable. The maximum performance of the animals was observed at the 20 percent level of inclusion of sunflower crop residue in the diet.

• 한국균학회지
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• 제26권1호통권84호
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• pp.47-50
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• 1998

농산부산물첨가배지 개발로서 이화학적 특성은 콩비지첨가구에서 유기물, 질소, 탄소 함량이 높았으며 전처리구의 pH, 유기물, 질소, 탄소 함량은 버섯 생육시 적합한 것으로 판단되었다. 애느타리 관행재배시 병당(850cc)에서 갓의수 20개 72g에 비하여 콩비지 10% 첨가구는 갓의 수 12개 수량 77g으로 7% 증수, 귤껍질 10% 첨가구는 갓의 수 21개 수량 11% 증수되었다. 버들송이 관행재배시 병당 (850cc) 수량 98g 대비 한약박을 제외한 모든 농산부산물 첨가해서 증수되었으나 그중 콩비지 10% 첨가구가 수량 113g으로 15% 증수되었다. 저비용 고효율 농산부산물 버섯 배지개발로써 농가경영비 절감과 고품질 버섯 생산으로 농가소득에 기여할 것이다.

• 농약과학회지
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• 제20권3호
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• pp.247-263
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• 2016

사료의 안전성은 우리가 먹는 축산식품 및 그 가공품의 안전성과 직결된다. 따라서 이 연구의 목적은 1) 사료 중 관리대상 농약의 동시분석법을 확립하고, 2) 국내외 사료 중 농약 잔류실태를 조사하여 원료부터의 축산식품의 안전성을 확보하고자 하였다. 농약 잔류실태 조사를 위해 국내 유통 사료 126점을 수거하였고, 농약잔류허용기준이 설정된 농약 121성분 중 동시분석이 가능한 105성분에 대해 분석법을 확립한 후 농약 잔류실태를 조사하였다. 농약 잔류실태 조사 결과에 따르면, 126점의 사료 중 106점(84.1%)이 불검출이었고, 20점(15.9%)에서 7성분이 농약잔류허용기준 이내로 검출되었다. 검출빈도가 높은 농약으로는 각각 5점에서 검출된 pirimiphos-methyl과 cyproconazole이었다. 이 밖에도 propiconazole, azoxystrobin, tricyclazole 등이 검출되었다. 이 결과들은 2015년 국내 유통 사료가 잔류허용기준 이하로 안전하게 관리되고 있음을 보여준다. 그럼에도 불구하고, 사료의 안전성 강화 및 불량사료 원천차단을 위해 지속적인 잔류 실태조사가 필요하다.

• 한국토양비료학회지
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• 제46권6호
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• pp.570-574
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• 2013

This study was conducted to assess $N_2O$ emissions in agricultural soils of Korea under the 1996 IPCC (Intergovernmental Panel on Climate Change) methodology. $N_2O$ emissions in agricultural soils were calculated the sum of direct emission and indirect emission by the N sources and emissions by field burning of crop residues. $N_2O$ emission was highest in animal manure as 1,547 $CO_2$-eq Gg. Indirect emissions by atmospheric deposition and leaching and runoff were 1,463 and 1,753 $CO_2$-eq Gg, respectively. $N_2O$ emission by field burning of crop residues was highest in pepper due to the residue/crop ratio and field burning ratio.

• 한국환경농학회지
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• 제19권2호
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• pp.116-121
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• 2000

재배중인 고추표면의 농약잔류물을 인위적으로 경감시키기 위하여 몇몇 감광제 (photosensitizer, PS)의 활성을 조사하였다. 살균제 dithianon, triflumizole 및 triforine을 고추에 4회 살포한 후 선발된 감광제를 1회 살포하고, 감광제 살포 후 0, 1, 3, 7, 15일에 시료를 채취하여 그 잔류량을 분석하였다. 회수율은 $76.6{\sim}78.3%$인 dithianon 외에는 $90.7{\sim}98.5%$로서 양호하였다. Dithianon의 경우, PS-1 (10 ppm) 살포 후 1일에 그 잔류량은 대조구의 76%이었다. Triflumizole의 경우, PS-4 (50 ppm) 살포 후 1일에 잔류량은 대조구의 48%이었다. Triforine의 경우, PS-3 (100 ppm) 살포 후 1일에 잔류량은 대조구의 55%이었다. 이들 결과로 미루어 볼 때 감광제의 작용은 농약의 종류 및 농약이 잔류해 있는 매체에 따라 달라짐을 알 수 있었다.

• 한국환경농학회지
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• 제29권2호
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• pp.165-175
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• 2010

A gas chromatographic (GC) method was developed to determine residues of captan, folpet, captafol, and chlorothalonil, known as broad-spectrum protective fungicides for the official purpose. All the fungicide residues were extracted with acetone containing 3% phosphoric acid from representative samples of five agricultural products which comprised rice, soybean, apple, pepper, and cabbage. The extract was diluted with saline, and dichloromethane partition was followed to recover the fungicides from the aqueous phase. Florisil column chromatography was additionally employed for final cleanup of the extracts. The analytes were then determined by gas chromatography using a DB-1 capillary column with electron capture detection. Reproducibility in quantitation was largely enhanced by minimization of adsorption or thermal degradation of analytes during GLC analysis. Mean recoveries generated from each crop sample fortified at two levels in triplicate ranged from 89.0~113.7%. Relative standard deviations (RSD) were all less than 10%, irrespective sample types and fortification levels. As no interference was found in any samples, limit of quantitation (LOQ) was estimated to be 0.008 mg/kg for the analytes except showing higher sensitivity of 0.002 mg/kg for chlorothalonil. GC/Mass spectrometric method using selected-ion monitoring technique was also provided to confirm the suspected residues. The proposed method was reproducible and sensitive enough to determine the residues of captan, folpet, captafol, and chlorothalonil in agricultural commodities for routine analysis.

• 한국에너지공학회:학술대회논문집
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• 한국태양에너지학회, 한국에너지공학회 1993년도 춘계 공동학술발표회 초록집
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• pp.20-32
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• 1993

Although the importance of agricultural sector decreased over the last several decades because of the economic growth in Korea led by the development of manufacturing sector, the biomass energy resources such as urban wastes, industrial wastes including agricultural residues emerged recently as a major target of development mainly because of environmental issues. (omitted)

• 농업과학연구
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• 제37권1호
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• pp.1-6
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• 2010

Allelopathic activity of rotation crop residues to common weeds and selectivity of crops were studied for developing an alternative weed control strategy in upland organic farming. All rotation crop residues with various ratios suppressed weed growth, but the growth of crop species stimulated a little when those were grown with the mixture of rotation crop residues except a few crop species. Among the rotation crop residues used in this study hairy vetch was the most effective, followed by Chinese milkvetch, barley and rye in suppression of weed growth. The 90:10 (crop:soil, v/v) treatments incorporation rate of crop residues such as hairy vetch and Chinese milkvetch suppressed completely the growth of all weed species tested in this study. The effect of crop residues on suppression of weed growth reduced to 90% when the incorporation rates decreased to 60% [60:40 (crop:soil, v/v). It was noticed that broadleaf weed species were more susceptible to rotation crop residues than grass weed species. In the influence of crop residues on the crop growth, no growth inhibition was found in red pepper, lettuce and perllia at any incorporation rates, but tomato, cucumber and corn were slightly inhibited in a few cases at their highest incorporation levels. This study demonstrated that rotation crop residues especially hairy vetch and Chinese milkvetch have high herbicidal effects against weeds without inhibiting the growth of crop species.

• 한국식물병리학회지
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• 제10권4호
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• pp.297-304
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• 1994

This study was carried out to develop bioassay for detection of pesticide residues in agricultural products by using the soil microbial isolates sensitive to pesticides. One hundred bacterial isolates and eighty five fungal isolates were obtained from soil and their sensitivity to 10 ppm of several pesticides was examined in vitro. Five bacterial isolates and three fungal isolates were found sensitive to organochloride fungicide and two fungal isolates sensitive to organocopper fungicide. Among these isolates, B46, B93 and F67 were tested to find out the difference in sensitivity according to the methods of fungicide treatment. All of the isolates were found sensitive to 10 ppm of organochloride fungicides mixed directly in PDA. But they were found insensitive to the fungicide mixed in PDA after filtering through membrane filter. In case of organocopper fungicide, the isolates were found sensitive only when it was treated in PDA. And their sensitivity showed difference among various kinds of organochloride fungicides. B46 and B93 were employed to check the possibility as the agent for detection of the pesticidal residues in twenty eight agricultural products including rice. It was found that all samples had not residues because the samples did not inhibit the growth of isolates. When organochloride fungicides were applied to the above products, it was possible to detect the residues in fruits and vegetables at the concentration of 10 ppm, but not in starch-rich grains. B46 and B93 were identified as Bacillus sp. according to their bacterial characteristics in culture.

• 농약과학회지
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• 제15권2호
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• pp.160-165
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• 2011

본 연구는 강남일부(강남구, 강동구, 송파구)지역 시설재배지에서 시기별 잔류농약의 오염 실태를 파악하고자 하였다. 각 지역에서 2010년 4월부터 2011년 6월까지 토양시료 60 점을 채취하여 시료 중 농약 잔류량을 다성분 동시 스크리닝 분석법으로 분석하였다 시설재배지 잔류농약 조사결과, endosulfan 0.002-0.999 mg/kg, procymidone 0.002-1.200 mg/kg, diazinon 0.003-0.024 mg/kg, metalaxyl 0.012-0.075 mg/kg로 검출되었다. 시설재배지 토양의 잔류농약 모니터링 결과 검출빈도가 높게 나타난 endosulfan을 대상으로 참나물, 상추에 대하여 흡수 이행 정도를 조사하였다. 강남구 지역의 토양에서 잔류농약을 검사한 결과 endosultan이 0.445 mg/kg로 잔류하였고, 이 토양에서 참나물을 60일 재배 후 잔류농약 검사를 실시한 결과 endosulfan 0.157 mg/kg로 잔류하여 토양 대비 참나물 중 endosulfan 이행률은 35.3%를 보였다. 또한 강동구 지역의 토양에서 잔류농약을 검사한 결과 endosulfan이 0.358 mg/kg로 잔류하였고, 이 토양에서 상추를 60일 재배 후 상추 중 잔류농약 검사를 실시한 결과 endosultan 0.004 mg/kg로 잔류하여 토양 대비 endosulfan 이행률은 1.1%를 보였다.