• Journal of Korean Society of Forest Science
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• v.98 no.4
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• pp.504-511
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• 2009

This study to understand the production cost of cultivation in chestnut tree (Castanea spp.) as a result of a survey conducted of 227 farmers is as follows. In full-time farmer, average cultivation area was 5.5 hectares and average chestnut production was 1.6 tons per hectare. In chestnut sale type, more than 73% of total production was sold by Nong-hyup (7an agricultural cooperative association) and intermediaries, and also proportion of nut size grade was 18% in special-large nut, following 49% in large nut, 25% in middle nut and 8% in small nut. There was considerable difference among cultivated regions in gross income, whereas total average gross income was 2,103 thousand KRW per hectare and 66.4% of it was used in management expenses. Finally the chestnut cultivated farmers have a yearly income of 706 thousands KRW (net income rate 33.6%). As peculiarity of regional production cost, a low tree farm in height and a labor intensive growing helped the improved quality of the chestnut so, on average, 2,161 thousand KRW per hectare of the income of the Chungnam was raised. However caused by an old-age of chestnut trees, there was a little input to management expenses and it resulted in low productivity in the Jeonnam and the Gyeongnam.

• Journal of The Korean Society of Grassland and Forage Science
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• v.43 no.2
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• pp.75-87
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• 2023

This research was conducted to analyze the cultivation performance and meteorological data of winter rye in Suwon, Gyeonggi Province, and Daegu for 11 years. The objective was to compare the growth and yield of domestically cultivated Korean rye cultivar "Gogu" and identify the factors influencing them, to determine suitable cultivation areas for Korean rye cultivar in the country. The results of the study showed that both Daegu and Suwon regions possess favorable climatic conditions for winter rye cultivation, with Suwon exhibiting a superior moisture supply compared to Daegu. Furthermore, the analysis of climate suitability revealed that rainfall days and precipitation were significant factors affecting rye cultivation. Through correlation and principal component analysis, the research evaluated the interrelationship between climate, cultivation factors, and winter rye crop performance, as well as identified variations among winter rye cultivation regions. This study provides valuable insights and information for winter rye cultivation in the country, thereby assisting in the decision-making process for selecting optimal cultivation areas.

• Journal of the Economic Geographical Society of Korea
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• v.16 no.3
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• pp.359-371
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• 2013

Vietnam is the second-largest coffee exporter in the world. Most of the coffee areas are concentrated in Dak Lak-a province of commercial agricultural production, making up 32.4% of the total coffee area in Vietnam. At present, coffee is the main income source for the province, with coffee accounting for 85% and 40%(2010) of the export value of the province and of the country, respectively. Although the rapid development of Dak Lak's coffee production significantly benefits the province and its coffee planters socioeconomically, emerging urgent problems such as land dispute among ethic groups need to be addressed. This paper aims to examine how coffee-production development in Dak Lak has affected land mobility. In addition, we consider how these changes have affected the livelihoods of the Kinh-the majority ethnic group in Vietnam-as well as the ethnic minorities. As a result, it is pointed out that the coffee development in Dak Lak creates the individual ownership on land. This ownership is more and more fortified when the encroaching land of the Kinh immigrants happens impetuously defying the customary law of the ethnic minorities.

• Horticultural Science & Technology
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• v.33 no.5
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• pp.763-771
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• 2015

Components and physiological activity of crops are strongly affected by the natural environments of the growth regions. In this study, we carried out soil analysis and determined the allicin, alliin, total pyruvate, total phenol and flavonoid, and reducing sugar contents of garlic from garlic-cultivating regions in the eastern and western portions of Jeju Province. Significantly higher contents of macronutrients were found in the soil and garlic from the eastern region of Jeju compared to western region, but micronutrients were higher in the western region than eastern region. In addition, the alliin and total phenolic contents were higher in the western region than in the eastern region. Also, allicin, total pyruvate, total flavonoid content, and ${\alpha}$-glucosidase inhibitory activity of the eastern region samples were higher than those of the western region in Jeju. This study promotes our understanding of the different components of garlic according to the cultivation regions of Jeju.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.688-692
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• 2009

본 연구는 전국 토양유실분포도와 토양유실위험 등급도를 작성하는 것을 목적으로 하였다. 토양유실분포도는 RUSLE를 이용하였고, 강우-유출 침식성인자(R)는 기상청의 59개 기상관측소의 1977년부터 2006년까지(30년간)의 강우량 자료를 이용하여 산정하였다. 빈도분석은 FARD를 이용하였고, 전국 R인자를 빈도별로 산정하였다. 토양유실량 분석결과 토지피복별로 초지, 나지 밭의 크기 순서로 토양유실이 발생하고, 우리나라 전체 평균은 약 17.2 ton/ha 정도의 토양유실이 발생하는 것으로 분석되었다. 5년빈도 강우특성에서 전체 토양유실량은 15,000여 톤의 토양유실이 발생하는 것으로 나타났으며, 토지피복 구분에서는 논, 산림, 밭작물 재배지역에서 많은 토양유실이 발생하는 것으로 분석되었다. 토양침유실 위험 등급도 작성은 토양유실위험 등급을 5개 등급으로 구분하여 수행하였다. 분석결과 토양유실위험 2등급인 보통지역이 전체 토양유실량 위험지역의 78.2%로 가장 많은 부분을 차지하고 있으며, 심각한 토양유실 위험지역은 분석지역 전체 중에서 약 1.1%인 $1,038km^2$정도인 것으로 분석되었다. 토지피복별로 심각한 토양유실 위험지역은 나지, 초지, 밭작물 재배지역의 순으로 각각 $93.5km^2$, $168.1km^2$, $327.4km^2$ 정도가 심각한 등급의 토양유실 위험 지역으로 분석되었다.

• Journal of the Korean Society of International Agriculture
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• v.30 no.4
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• pp.285-291
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• 2018

The System of Rice Intensification (SRI) has been spread very quickly in southern Cambodia. To understand the motivation of farmers in adapting SRI, and its benefits, we conducted an on-farm study at Popel commune, Tramkak district, Takeo province in southern Cambodia, during the 2012 and 2013 wet season. We noticed a significant difference between SRI and conventional farmers' practices (FP) in rainfed lowland rice ecosystem. Despite of low nitrogen input, without chemical fertilizers, high grain yield was achieved in SRI 1 (6.0 t ha) and SRI2-Bottom ($7.2t\;ha^{-1}$) in 2013. SRI 1 and SRI 2 of panicle and number of panicle were high than SR 3, FP 2, and FP 3 due to early transplant. Relationships between total number of spikelet and plant nitrogen were ($r^2=0.95$) highly positive at harvest. SRI fields were, most of them achieving highly superior yield and number of panicle compared to their FP fields. The results indicated that SRI practices of planting younger seedling, with organic material and topography of paddy, lead to increased grain yield.

• Journal of the Korean Society of Food Science and Nutrition
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• v.46 no.8
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• pp.929-936
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• 2017

The purpose of this study was to compare the chemical components and biological activities of Salvia miltiorrhiza Bunge (SMB) from different cultivation regions (Gochang, Yeongyang, Jangheung, and China). Proximate compositions and contents of total polyphenols and flavonoids were measured. Depending on the cultivation region, proximate composition of SMB showed significant variations. Total polyphenol and total flavonoid contents were highest in Yeongyang SMB and Gochang SMB, respectively. We prepared hot water and 75% ethanol extracts of SMB from different cultivation regions and also investigated the biological effects of extracts on anti-oxidant, antibacterial, and anti-inflammatory activities. Extracts of Yeongyang SMB were the most effective at scavenging DPPH and ABTS free radicals, and hot water extract showed better scavenging activity than 75% ethanol extract. We observed that extracts of Yeongyang SMB exhibited the best antibacterial activity against Bacillus cereus, and 75% ethanol extract showed better antibacterial activity than water extract. Anti-inflammatory activities of SMB extracts from different cultivation regions were investigated through evaluation of their inhibitory effects on production of nitric oxide (NO) in lipopolysaccharides-induced RAW 264.7 cells. At $50{\mu}g/mL$, extract of China SMB showed the highest NO inhibitory activity of 34% among water extracts, and extract of Gochang SMB showed the highest NO inhibitory activity of 68% among 75% ethanol extracts. Salvianolic acid B level was the highest in extract of Yeongyang SMB with values of 110.59 mg/g for water extract and 111.93 mg/g for 75% ethanol extract.

• Korean Journal of Remote Sensing
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• v.36 no.5_1
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• pp.823-833
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• 2020

In order to stably produce crops, there is an increasing demand for effective crop monitoring techniques in domestic agricultural areas. In this manuscript, a cultivation area extraction method by using deep learning model is developed, and then, applied to satellite imagery. Training dataset for crop cultivation areas were generated using RapidEye satellite images that include blue, green, red, red-edge, and NIR bands useful for vegetation and environmental analysis, and using this, we tried to estimate the crop cultivation area of onion and garlic by deep learning model. In order to training the model, atmospheric-corrected RapidEye satellite images were used, and then, a deep learning model using FC-DenseNet, which is one of the representative deep learning models for semantic segmentation, was created. The final crop cultivation area was determined as object-based data through combination with cadastral maps. As a result of the experiment, it was confirmed that the FC-DenseNet model learned using atmospheric-corrected training data can effectively detect crop cultivation areas.

• Proceedings of the KGS Conference
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• 2002.05a
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• pp.120-123
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• 2002

본 연구는 농천어메니티의 개념을 토대로 농촌주민과 도시민의 가치라고 할 수 있는 정주기능으로서의 생활자원화와 방문가치로서의 관광자원화로 구분하고, 이를 토대로 도시민과 농촌주민, 전문가들을 대상으로 농촌자원의 중요도와 순위적 관계를 분석하였다. 구체적인 연구결과를 살펴보면 다음과 같다. 첫째, 농촌자원을 자연적 자원과 문화적 자원, 사회적 자원으로 구분하여 37개 자원을 설정하였다. 이러한 농촌자원은 농촌어메니티를 형성하거나 형성에 영향을 미치는 대상이라고 볼 수 있다. 둘째, 이러한 농촌자원은 농촌주민과 도시민이 지닌 가치에 기초하여 생활자원적 가치와 관광가치적 가치를 동시에 혹은 차등적으로 지닐 수 있다. 이러한 관점은 농촌자원에 대한 중요도 평균에 대한 차이검증(t-test)을 수행한 결과 전체 자원의 56.8%에 해당하는 21개가 유의미한 차이를 보인 결과에 의해 지지를 받는다. 셋째, 농촌자원에 대한 순위적 상관관계분석에서도 전문가와 전체집단에서 생활자원과 관광자원에 대한 순위상관관계가 의미가 없는 것으로 나타나 위의 두번째 결과를 지지하고 있다. 이러한 결과는 농촌자원의 개발 방향과 가치부여가 자원의 속성에 따라 차등적으로 진행되어져야 함을 보여준다. 다섯째, 농촌자원의 유형을 생활자원화와 관광자원화에 대한 중요도의 표준화 점수에 기초하여 4개 유형(유형 I~IV)으로 구분하였다. 이러한 유형별 자원중요도를 고려하여 농촌마을의 개발목적에 비추어 생활자원형이나 관광자원형과의 연계를 통해 마을의 정체성과 특성화에 기여할 수 있도록 해야 할 것이다.(요약 및 결론에서 발췌)를 고지도와 지리지.읍지를 통하여 살펴봄으로써 변한 것과 변하지 않는 것을 분석하여 시대상의 복원과 지역사회의 정체성 확립에 일조하고자 한다.곡물의 여러 줄기가 합수하고 물이 역류하지 않으며 잘 감아도는 곳으로 표현할 수 있다 이러한 명당의 기본적인 원리는 장풍(藏風)과 득수득파(得水得破)이다. 장풍과 득수란 '국'(局), 즉 산줄기와 수계로 이루어진 일정한 범위 속에 만물이 생태계 속에서 살아가는 모습인 '체형(體形)'의 의미가 나타나야 한다는 것이다. 그러나 이러한 의미는 시대에 따라 달라질 수 있는 것이다.면적의 52%를 점유하여 감자 재배지의 핵심지를 이룬다. 4. 한국 감자 재배지역 중심지의 지리적 특징은, 높은 산지지역의 산록완사면에 밭작물로 재배된다는 점과 교통이 불편한 지역으로서 도시화와 산업화 지역의 그늘 지역이 대부분이다. 강원도의 감자 재배지는 감자재배에 적합한 자연환경과 화전농업의 전통, 감자 재배기술의 전파, 중앙정부와 지방정부가 지원하는 각종 연구소 분포와 영농지도, 씨감자 생산과 협동조합의 판로 개척, 도로 개설과 포장 등의 인문지리적 요인이 영농조건을 개선하고 감자 판매를 위한 시장접근을 용이하게 하여, 남한 최대의 감자 재배지역을 형성하였다. 제주도는 산지지형과 따뜻한 기온으로 2기작이 가능하고, 감자가공 공장설립과 교통발달에 따른 육지 시장과의 접근이 용이해졌기 때문에 남한에서 2번째로 큰 감자재배지역이 되었다.(요약 및 결론에서 발췌)그람양성균에서 효과적이었으며, 농도별 항균력시험 결과 농도가 증가할수록 비례하여 저해율도 증가함을 알 수 있었다. 첨가농도를 달

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.04a
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• pp.51-53
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• 2002

시설오이의 국내 재배면적은 2001년도에 5,412 ha 으로서 389천톤을 생산하였다. 재배작형은 시설억제, 촉성, 반촉성, 시설조숙 등 매우 다양하고, 재배작형과 지역적인 재배관습 그리고 소비경향에 따라 재배품종 또한 다양하다. 시설오이의 단보당 평균 수량은 7,184 kg 이지만, 이들 재배요인에 따라 단보당 수량이 지역별로 4배 정도로 차이가 많다. 즉 중부지방에서 무가온 시설조숙재배인 경우 과중이 120g 내외인 백다다기 오이를 4~5개월 정도 단기간 재배하기 때문에 수량이 단보당 3,500kg 정도이지만, 남부지방에서 7~10개월 정도 장기간 청장계 오이를 재배하는 경우에는 단보당수량이 12,000kg 이상을 넘는다. (중략)