• 한국유기농업학회지
• /
• 제19권4호
• /
• pp.513-528
• /
• 2011

This study was conducted to evaluate the nutritional value of locally produced organic agricultural by-products to substitute imported organic feeds for organic ruminant farming. Imported organic feeds (corn grain, soybean meal, soybean seed, oat grain, barley grain, wheat grain, buckwheat, sunflower seed meal) and byproducts (rice bran, grape seed meal, rice straw, soybean hull, soybean curd, rice hull, green kernel rice, and crushed rice grain) were analyzed for chemical composition and NDF, ADF, mineral, and amino acid contents and anti-nutritional factors. Dry matter, NDF and ADF contents in organic feeds were higher than those in conventional feeds. Especially, the 9.65% fat content of organic soybean meal was 6 times higher than the 1.95% fat content of conventional soybean meal. Fat contents of rice bran, grape seed meal, green kernel rice, and crushed rice grain were 25.66, 6.09, 3.57 and 1.59%, respectively. Protein contents of soybean hull and soybean curd were 14.68 and 19.87%, respectively, which are highest among organic by-products. Levels of aflatoxin in all feeds were below the safety level. Therefore, organic rice bran, green kernel rice and crushed rice as energy source, and soybean hull and soybean curd as protein source could partial replace imported feeds for organic ruminant farming.

• Journal of Biosystems Engineering
• /
• 제22권3호
• /
• pp.295-302
• /
• 1997

An ultimate purpose of this study was to develop an automatic system for brown rice quality inspection using image processing technique. In this study emphasis was put on developing an algorithm for discriminating the brown rice kernels depending on their external quality with a color image processing system equipped with an adaptor magnifying the input image and optical fiber for oblique lightening. Primarily, geometical and optical features of images were analyzed with paddy and the various brown rice kernel samples such as a sound, cracked, peen-transparent, green-opaque, colored, white-opaque and brokens. Secondary, geometrical and optical parameters significant for identifying each rice kernels were screened by a statistical analysis(STEPWISE and DISCRIM procedure, SAS wer. 6) and an algorithm fur on- line discrimination of the rice kernels in static state were developed, and finally its performance was evaluated. The results are summarized as follows. 1) It was ascertained that the cracked kernels can be detected when e incident angle of the oblique light is less than 2$0^{\circ}C$ but detectivity was significantly affected by the angle between the direction of the oblique light and the longitudinal axis of the rice kernel and also by the location of the embryo with respect to the oblique light. 2) The most significant Parameters which can discriminate brown rice kernels are area, length and R, B and r values among the several geometrical and optical parameters. 3) Discrimination accuracies of the algorithm were ranged from 90% to 96% for a sound, cracked, colored, broken and unhulled, about 81 % for green-transparent and white-opaque and 75 % for green-opaque, respectively.

• 한국농업기계학회:학술대회논문집
• /
• 한국농업기계학회 1996년도 International Conference on Agricultural Machinery Engineering Proceedings
• /
• pp.823-833
• /
• 1996

An ultimate purpose of this study is to develop an automatic brown rice quality inspection system using image processing technique. In this study emphasis was put on developing an algorithm for discriminating the brown rice kernels depending on their external quality with a color image processing system equipped with an adaptor for magnifying the input image and optical fiber for oblique illumination. Primarily , geometrical and optical features of sample images were analyzed with unhulled paddy and various brown rice kernel samples such as sound, cracked, green-transparent , green-opaque, colored, white-opaque and brokens. Secondary, an algorithm for discrimination of the rice kernels in static state was developed on the basis of the geometrical and optical parameters screened by a statistical analysis(STEPWISE and DISCRIM Procedure, SAS ver.6). Brown rice samples could be discriminated by the algorithm developed in this study with an accuracy of 90% to 96% for the sound , cracked, colored, broken and unhulled , about 81% for the green-transparent and the white-opaque and about 75% for the green-opaque, respectively. A total computing time required for classification was about 100 seconds/1000 kernels with the PC 80486-DX2, 66MHz.

• Journal of Animal Science and Technology
• /
• 제53권5호
• /
• pp.441-450
• /
• 2011

본 연구는 국내 농산부산물을 이용하여 in vitro 반추위 발효 특성을 조사하고 에너지 사료인 농후사료와 유사한 반추위 발효특성을 나타내는 농산부산물을 선정하여 최적배합수준을 통한 농후사료 대체 효과를 규명하기 위하여 수행하였다. 본 연구를 수행하기 위하여 국내에서 다량 생산되는 9점의 부산물(소맥피, 단백피, 제빵 부산물, 비지, 미강, 청치, 대두피, 주정박, 버섯배지)을 선발하였다. 1차 실험에서는 in vitro 배양을 통해 각각 원료사료의 시간대별(0, 3, 6, 12, 24, 48 h) 반추위 발효특성을 평가하였으며, 옥수수 및 대두박과 유사한 발효특성을 나타내는 원료사료 2종류를 선발 하였다. 최종적으로 선발된 2종류의 원료사료는 다른 원료사료와 혼합한 조합구를 만들어 in vitro 배양을 통한 옥수수와 대두박의 대체효과를 평가하였다. 실험설계는 옥수수와 대두박을 기본배합으로 하여, 알팔파, 티머시 건초 및 옥수수사일리지를 조사료로 사용하였다(T1). T2구는 대두박을 비지로 2.5% 대체, T3구는 옥수수를 청치로 15% 대체하였으며, T4구는 옥수수와 대두박을 청치와 비지로 각각 10 및 5% 대체하여 in vitro 반추위 발효특성을 평가하였다. 각 원료사료와 농산부산물의 in vitro 반추위 발효 특성을 조사한 결과, 옥수수 및 대두박과 유사한 발효특성을 나타내는 농산부산물로 청치와 비지를 선정하였다. 2차 실험에서는 pH의 경우, T4구에서 T1구와 비교하여 유의하게 낮았으며, 가스발생량은 T3 구에서 T1구와 비교하여 유의하게 높았다(p<0.05). 또한 건물 분해율은 3 및 24시간에 T4구에서 T1구와 비교하여 높았다(p<0.05). 결과적으로 농산부산물인 청치와 비지의 사용은 옥수수와 대두박을 일부 대체하기 위해 사용가능할 것으로 판단된다.

• 한국농공학회논문집
• /
• 제46권1호
• /
• pp.99-105
• /
• 2004

The present agricultural water quality standards are set by a policy goal. This is intended for water quality management of public water resources, but not for the use of water resources. These standards were not determined by considering the influence of water quality on the safety of agricultural produce and the growth, yield and quality of agricultural crops. Thus, this study was carried out to investigate the influence of irrigation water quality on the growth, yield, and grain quality of rice and acquire fundamental knowledges to set up irrigation water quality standards. The pot experiment was conducted with 4 treatments using irrigation waters with various total nitrogen concentrations (control, 1, 5, 10, 20mg/L) and replicated four times with randomized block design. The results of this study showed that plant height, number of tiller, plant dry weight, the uptake of N, P, and K, and rice protein contents tended to increase as the T-N concentration in irrigation water was increased. In addition, grain yield at T-N 20 mg/L was significantly higher than in the control, but the percentage of head rice was slightly lower due to the increase of green kernel and white belly/core kernel.

• Environmental Engineering Research
• /
• 제22권1호
• /
• pp.40-54
• /
• 2017

According to FAO, "agricultural sectors are particularly exposed to the effects of climate change and increases climate variability". As a result, the study makes an attempt to answer the question: Is there a causal effect between agricultural production and carbon dioxide emissions in Ghana? By employing a time series data spanning from 1960 to 2015 using the Autoregressive Distributed Lag method. There was evidence of a long-run equilibrium relationship running from copra production, corn production, green coffee production, milled rice production, millet production, palm kernel production and sorghum production to carbon dioxide emissions. The short-run equilibrium relationship shows that, a 1% increase in copra and green coffee production will increase carbon dioxide emissions by 0.22% and 0.03%, a 1% increase in millet and sorghum production will decrease carbon dioxide emissions by 0.13% and 0.11% in the short-run while a 31% of future fluctuations in carbon dioxide emissions are due to shocks in corn production. There was bidirectional causality between milled rice production and carbon dioxide emissions, millet production and carbon dioxide emissions and, sorghum production and carbon dioxide emissions; and a unidirectional causality running from corn production to carbon dioxide emissions and carbon dioxide emissions to palm kernel production.

• 한국물환경학회지
• /
• 제20권3호
• /
• pp.301-306
• /
• 2004

The present water quality standards for agricultural were established without considering the effects of water quality on the safety, growth, yield and quality of crops. This study was carried out to investigate the effects of irrigation water quality on the growth, yield, and grain quality of rice, and to acquire basic knowledges to set up water quality standards for irrigation. The field and pot experiments were conducted with irrigation water that was previously adjusted four concentrations (control, 5, 10, 20 mg/L) and six concentrations (control, 5, 10, 15, 20, 30 mg/L) by $NH_4NO_3$ solution and replicated three and four times with randomized block design, respectively. The results of this study showed that the inorganic nutrient of rice plant, rice protein contents and number of panicle tended to increase as the T-N concentration in irrigation water was increased. In addition, grain yield at T-N 10 mg/L and 20mg/L were significantly higher than the control at the field experiment. From the pot experiment at T-N 30 mg/L, the percentage of head rice was slightly lower due to the increase of green kernel and white belly/core kernel.

• 한국작물학회지
• /
• 제35권4호
• /
• pp.370-374
• /
• 1990

벼물바구미 피해정도에 따른 벼 생육 및 미질 변화에 미친 영향을 조사한 결과는 다음과 같다. 1. 벼물바구미 피해정도에 따라서 보면 피해정도가 심할수록 경수는 적고, 초장은 짧았으며 최고분벽기도 지연되었다. 2. 벼물바구미 피해에 의하여 출수기는 1-2일 정도 지연되었고, 간장도 짧아졌으며, 수수도 감소하였고, 등숙율은 떨어지는 경향이었다. 3. 벼물바구미 피해에 의하여 수량은 4-22% 감소하였으며, 그 정도는 1모작보다 2모작에서 심하였다. 4. 벼물바구미 피해에 의한 미질 변화는 불완전미가 증가하였고, 특히 청미가 증가하였다.

• 한국농림기상학회지
• /
• 제3권3호
• /
• pp.150-155
• /
• 2001

1998년 9월에 호남평야지에서 호숙기 전후의 벼가 벼알이 흰색으로 탈색되며 마르는 현상이 보고되어 현지에서 그 증상을 관찰하고, 벼알마름의 원인과 벼알마름에 따른 수량 및 미질 변화를 조사한 결과를 요약하면 다음과 같다. 벼알마름 현상 발생원인은 9월 1일부터 9월 6일까지는 강풍은 불지 않았으나 기온이 높고 대기의 습도는 전북 35~56%,전남 35~51%로 매우 건조하였으며 9월 9일~9월 14일에는 최고기온 30~33$^{\circ}C$(전북 9월 9일, 전남 9월 12일)의 이상고온과 함께 최저습도가 전북 36%(9월 4일), 전남 37%(9월 14일)로 매우 건조한 상태이고 일조도 강하였기 때문에 벼알마름 증상이 발생되었던 것으로 판단된다. 벼알마름 증상은 정상적으로 등숙하던 호숙기 경의 벼가 주로 벼이삭의 상위에 부착된 1차지경의 벼알이 탈수, 퇴색되었으며 한 벼알에서도 직사광선을 받는 위 부분에서 심하였다. 탈수된 벼알도 벼알마름 발생 후 1주일경인 9월 16일 조사당시까지 계속 등숙이 진행되고 있었고 탈수된 벼알이 붙어있는 소지경과 1, 2차 지경은 탈수되지 않고 정상이었다. 완숙기의 현미천립중은 정상립이나 벼알마름립간에 차이가 없었으나 벼알마름립은 정상립보다 동할미와 복백이 많아 불완전립 비율이 높았다.

• 한국육종학회지
• /
• 제40권3호
• /
• pp.303-307
• /
• 2008

출수가 늦어 남해안 일부 지역에서만 재배되던 재래종 녹미(일명; 생동찰벼)를 개량하여 전국적으로 안전하게 재배할 수 있도록 신품종 "녹원찰벼"를 육성하였다. 생동찰벼의 종자에 감마선 200 Gy를 조사하여 $M_2$세대에서 출수가 빠르고 키가 작은 우량 계통을 선발하였다. 계통선발과 지역적응성 시험을 거쳐 유망계통 원농 17호(녹원찰벼)를 최종적으로 선발하여 품종등록하였다. 녹원찰벼는 생동찰벼와 비교하여 중부지방에서 이삭 피는 시기가 생동찰벼보다 15일정도 빠른 8월 17-20일경이었고 간장은 15 cm 정도 작은 91 cm이었다. 녹원찰벼의 현미 수량은 생동찰벼보다 10% 정도 증가하였다. 녹원찰벼의 백미 및 현미중의 아미노산 함량은 다른 대조 품종보다 10-60% 높았다. 엽록소 함량은 대조품종 신선찰벼 및 남평벼보다 비해 2배 높았다. 등숙기에 엽록소 소실이 늦어 녹색 현미 찹쌀로 이용이 가능하여, 일반 쌀에 섞거나 현미밥을 지으면 연한 황록색의 시각적인 효과와 고소하고 차진 특성이 있다. 병해충에도 강하여 앞으로 친환경 기능성 쌀로 이용확대가 기대된다.