• 한국유기농업학회지
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• 제14권2호
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• pp.191-204
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• 2006

파종시기와 포장조건을 달리한 콩의 논 재배 시 R2와 R5 시기의 생육반응과 R5 시기의 수량성을 분석한 결과는 다음과 같다. 공시 품종들의 경장에 있어서 R2와 R5 시기 모두 단작 시험구가 맥후작 시험구보다 긴 경향을 보였다. 파종 시기와 재배법 모두를 고려해 보면 단작의 경우 평휴 재배가 그리고 맥후작의 경우 고휴재배에서 다소 긴 경향을 보였다. 근류의 형성은 평휴보다 고휴재배에서 많았고, 파종기 및 재배 방법에 상관없이 황금콩이 가장 높았다. 단작 보다 맥후작 시험구에서 공시 5품종 모두 콩 생육기 진전에 따른 엽면적 증가 뚜렷하였다. 지상부와 지하부의 건물 생산량에 있어서 맥후작 보다 단작 시험구에서 높은 경향을 보이는데, 이는 생육기간의 차이 때문인 것으로 생각된다. 재배 방법 별로는 지상부 건물중이 평휴에서 높았던 반면 지하부 건물중은 고휴재배에서 보다 양호하였다. 이러한 지상부 및 지하부의 생육은 T/R율에 영향을 주는데, 재배 방법별로는 평휴조건이 T/R율이 높았으며, 파종시기별로는 단작의 T/R율이 맥후작보다 높았다. 태광콩, 대원콩, 황금콩은 R2 시기에는 단작의 T/R율이 높았던 반면, R5 시기에는 맥후작의 T/R율이 높았는데, 이는 이들 품종이 생육기 진전됨에 따라 지하부 생육이 지상부 생육에 비해 미약하기 때문으로 생각된다. 등숙기인 R8 시기에서 협수는 조생종인 화엄풋콩이 가장 적었고, 소립종인 은하콩이 가장 많았고, 통계적 유의성은 없으나 평휴보다는 고휴에서 그리고 단작구보다 맥후작 파종구에서 협수가 많은 경향이었다. 조생종인 화엄풋콩이 맥후작에서 등숙이 낮았고, 황금콩과 은하콩은 단작구보다 맥후작에서 등숙율이 높았다. 수량성은 품종간 차이가 있는데 대원콩과 태광콩에서는 6월 19일 파종이 5월 25일 파종에 비해 수량이 높은 경향을 보였다.

• 식물병연구
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• 제13권3호
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• pp.152-156
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• 2007

백합을 노지재배할 경우 'Raizan'과 'Casa Blanca' 품종에서 잎마름병의 발병엽율이 각각 50%, 45.4%인 반면, 비가림 시설재배할 경우는 발병엽율이 1.5%, 1.9%로 현저히 감소하였다. 또한 비가림 시설재배에서 스프링클러 관수시에 잎마름병 발생율이 $14.5{\sim}16.5%$였으나 점적 관수시에는 $1.5{\sim}2%$로 감소하였다. 백합 잎마름병 발생에 미치는 연작의 영향을 조사하였던 바 초작지에 비하여 재작지 및 3년 연작지의 병 발생율이 현저히 높았다. 월동한 병든 식물체의 잎, 줄기, 꼬투리, 종구에서 B. elliptica의 분리비율은 43.3%, 46.7%, 60%, 0%, B. cinerea의 분리비율은 10.3%, 0%, 3.3%, 0%였으며, 두 균 모두 백합의 꼬투리에서 가장 높은 비율로 분리되었다. Raizan 품종을 절화한 후 식물체 잔재물을 방치한 포장에서는 다음 해 최고 56.5%의 발병엽율을 나타낸 반면에 잔재물을 제거한 포장에서는 발병엽율이 7.3%로 매우 낮았다. 노지재배시 흑색비닐, 수피, 볏짚을 이용하여 멀칭재배를 한 경우 잎마름병의 발병엽율이 각각 6.6%, 8.2%, 11.3%로서 비멀칭재배의 발병엽율 21.3%에 비해 현저히 감소하였다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2000년도 춘계임시총회 및 학술발표대회
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• pp.45-51
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• 2000

According to the research of the cultivation result on the spot farmers for 5 years in order to investigate its cultivation conditions and problems of Lycium chinense Mill, the development of the variety with early mature, pest tolerance, and high yielding is urgent and it is call for the development of rooted cutting cultivation by testing of bed soil, growth regulator and cutting times. The development of cultivation method with planting year, planting density, supplementary period and amounts of supplementary of Lycium chinense Mill planted in growing field are required and for the disease and the effective control of disease and insect pest resistance is needed by auxotrophic fertilizing and organic agricultural method, met by agricultural chemicals.

• 한국환경과학회지
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• 제30권2호
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• pp.145-152
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• 2021

Soil conservation management is necessary for sustainable agriculture, in highland areas, and cover crops are one of the best soil conservation methods for slopes. In this study, we evaluated the effects of alfalfa cultivation on maize production, as well as soil conservation and quality. There was an outstanding soil conservation effect with alfalfa cultivation in the fallow and maize growing seasons. In particular, alfalfa cultivation reduced soil loss by up to 98% compared with bare field. It also increased the activities of soil microorganisms and the supply of organic matter. Maize production with alfalfa cultivation showed no significant differences in yield. In conclusion, alfalfa is an advantageous perennial cover crop in highland agricultural slope areas, which can have positive effects on soil quality and conservation, as well as maize production.

• Journal of Biosystems Engineering
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• 제43권1호
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• pp.30-36
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• 2018

Purpose: The objective of this study is to evaluate the effect of cultivation conditions on the growth and glucosinolate content of Chinese cabbage and kale. Methods: Chinese cabbage and kale were grown in three different cultivation conditions, including a plant factory, greenhouse, and open field. Samples were collected at two harvesting times (10 d and 20 d after transplanting the seedlings). Nine growth parameters (plant height, plant width, number of leaves, petiole diameter, SPAD readout, leaf length, leaf width, stem diameter, and plant weight) were measured immediately after harvesting, and the samples were freeze-dried and stored until the glucosinolate content was analyzed. Mean values of the growth parameters and glucosinolate contents were evaluated using Duncan's multiple range tests. Results: The results indicated that the plant parameters of the Chinese cabbage and kale were greater for plants grown in the plant factory and greenhouse. The plant height, width, and weight showed significant differences in the Duncan's multiple range tests at a 5% level. The plant factory also produced greater contents of most of the glucosinolates. Conclusions: Three different cultivation conditions significantly affected the growth and glucosinolate contents of Chinese cabbage and kale. Further study is necessary to investigate other functional components and different vegetable varieties.

• 한국토양비료학회지
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• 제46권6호
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• pp.575-578
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• 2013

Rice cultivation in the paddy field and the burning of crop residues have been identified as the important sources of methane emission in agricultural sector. This study aimed at assessment of the methane emission from croplands in the year of 2011 with the IPCC guideline methodology. Methane from rice cultivation was emitted 6,813 $CO_2$-eq Gg in 2011. According to the water management, methane emission amounts by continuously flooded and intermittently flooded were 1,499 and 5,314 $CO_2$-eq Gg, respectively. Methane emission by crop residues burning was highest in red pepper and followed by rice straw, pulses and barely in 2011. Methane emission by field burning was very little compared with rice cultivation.

• 펄프종이기술
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• 제40권1호
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• pp.35-40
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• 2008

The environment of agriculture in Korea is changed very rapidly. Since the labours in fruit cultivation field are getting older, the resources and the aid materials for farming need to be multi functional and easy to use. Therefore, They have to use various kind of aid materials in field of fruit cultivation like as fruiting bag. The development of practical utilization way of embossing process for manufacturing of fruiting bag and wrapping paper of agricultural products was main purpose of this study. Embossing roll was designed in Ginyong Embo(Co.) for the embossing process of fruiting bag. The embossing treated fruiting bag was manufactured in Agro(Co.) at mill scale. The mechanical properties of embossing paper was investigated and operation efficiency of bagging was tested at field. The properties of embossed paper was satisfied for fruiting bags for cultivation of apple and pear.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2017년도 9th Asian Crop Science Association conference
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• pp.112-112
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• 2017

Rice blast caused by Magnaporthe oryzae is one of the most serious diseases that affect the quantity and quality of rice production. The use of resistant rice varieties would be the most effective way to control the rice blast. However R gene incorporation into the rice variety takes time and pathogen could overcome the R gene effects after for a while. For monitoring the rice blast resistance gene distribution in Korean varieties, the four major blast resistance genes against M. oryzae were screened in a number of Korean rice varieties using molecular markers. Of the 120 rice varieties tested, 40 were found to contain the Pi-5 gene, 25 for the Pi-9 gene, 79 for Pi-b and 40 for the Pi-ta gene. None of these rice varieties includes tested 4 R genes. 3 R genes combination, Pi-5/Pi-9/Pi-b, Pi-5, Pi-9.Pi-ta, or Pi-9/Pi-b/Pi-ta were found in 12 varieties, the rice blast disease severity were showed as resistant in the rice verities containing Pi-9/Pi-b/Pi-ta R genes combination, respectively. Also pathogenic diversity of M. oryzae isolates collected in the rice field from 2004 to 2015 in rice field in Korea were analyzed using rice blast monogenic lines, each harboring a single blast resistance gene. Compatibility of blast isolates against rice blast monogenic lines carrying the resistance genes Pi5, Pi9, Pib, and Piz showed dynamic changes by year. It indicates that pathogen has high evolutionary potential adapted host resistances to increase fitness and would lead to rice blast resistance bred into the cultivar becoming ineffective eventually.

• 대한원격탐사학회지
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• 제38권6_1호
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• pp.1007-1014
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• 2022

차세대중형위성(Compact Advanced Satellite 500, CAS500)은 식생, 산림, 농업 등의 분야를 포함한 다양한 목적을 위하여 사용될 수 있으며, 다양한 영역에 대한 빠른 위성영상의 취득이 가능할 것으로 기대되고 있다. 차세대중형위성을 통하여 취득된 위성영상을 농업분야에서 활용하기 위해서는 위성영상 기반 작물재배지역 추출 기법에 대한 개발이 필요하다. 특히, 최근 들어 딥러닝 분야에 대한 연구가 활발해짐에 따라서, 작물재배지역 추출을 위한 딥러닝 모델의 개발 및 훈련자료 생성에 관한 연구가 필요한 실정이다. 본 연구에서는 PlanetScope 위성영상과 팜맵을 이용하여 합천군 지역의 양파 및 마늘 재배지역을 분류하고자 하였다. 특히, 효과적인 모델의 학습을 위하여 작물재배지역의 비율에 따른 모델 성능을 분석하고자 하였다. 실험에 사용한 딥러닝 모델은 Fully Convolutional Densely Connected Convolutional Network (FC-DenseNet)을 작물재배지역 분류의 목적에 맞도록 재구성하여 활용하였다. 실험결과, 훈련자료 내 작물재배지역의 비율이 딥러닝 모델의 성능에 영향을 미치는 것을 확인하였다.

• 한국약용작물학회지
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• 제28권4호
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• pp.254-259
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• 2020

Background: Centella asiatica is a well-known medicinal plant having a wound healing effect. In this study, the growth, asiaticoside content, and antioxidant components and activity were investigated in C. asiatica resources under different cultivation and irrigation conditions. Methods and Results: The cultivation and irrigation methods were divided as greenhouse and open field, and sprinkler and sub irrigation. respectively. Growth characteristics were measured in aerial parts of C. asiatica. Asiaticoside content was analyzed using high performance liquid chromatography. Total polyphenol, total flavonoid and 2,2-diphenyl-1picryl hydrazyl (DPPH) radical scavenging activity were analyzed for antioxidant activities. Growth was higher under greenhouse and sub irrigation than open field and sprinkler conditions. In the leaves, asiaticoside content was 53.45 mg/g (open field) and 34.38 mg/g (sub irrigation), total polyphenol was 41.14 mg/g (open field) and 25.73 mg/g (sub-irrigation), and total flavonoid was 27.26 mg/g (open field) and 23.72 mg/g (sub-irrigation). DPPH radical scavenging activity in the leaves was 85.97 mg·ascorbic acid equivalent (AAE)/g (open field) and 54.83 mg·AAE/g (sub irrigation). Conclusions: Asiaticoside and antioxidant components and activity were not accompanied with high yield, although high growth was observed under greenhouse conditions. Therefore, cultural requirements of C. asiatica should be sufficiently considered to suit each purpose.