• 한국유기농업학회지
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• 제19권spc호
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• pp.222-224
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• 2011

The effects of seawater on growth of lettuce(Lactuca sativa L.), leaf perilla(Perilla frutescens var. japonica Hara), red pepper(Capsicum annuum L.) and cucumber(Cucumis sativus L.) seedlings were investigated in the glass greenhouse. These effects were studied on seedlings, and diluted seawater (1%, 5%, 10%, 20%, 50%, 100% v/v) was sprayed enough on leaves. The tested four vegetable crops have well grown up to 10% diluted seawater, but the tested vegetable crops were damaged from increasing salt levels. Of these, lettuce was provided salt-tolerant vegetable crop and red pepper was considered salt-sensitive vegetable crop. The salt tolerance of vegetable crops is different between crops and complicated because of additional detrimental effects caused by accumulated ions or specific ion toxicities in their leaves. These results show that agricultural use of seawater may be benefit crop cultivation in organic farming system as well as in conventional farming system.

• The Plant Pathology Journal
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• 제19권2호
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• pp.79-84
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• 2003

Sclerotinia rot occurred severely on some vegetable crops grown in Namyangju, Yangpyung, and Yangiu areas in Korea in 2001-2002. The crops infected with Scterotinia sp. were Adenophora remotiflora, Armoracia lapathfolia, Angelica acutiloba, Angelica archangelica, Anthriscus sylvestris, Aster tataricus, Beta vulgaris var. cicla, Brassica campestris var. marinosa, Brassica juncea var. laciniata, Chicholium intybus, Lactuca indica var. dracoglossa, Lactuca sativa var. oak-leaf, Petroselinum crispum, and Phyteuma japonicum. The fungus associated with the disease was identified as Sclerotinia sclerotiorum, based on the morphological characteristics of the pathogen. The symptoms were water-soaked spots that enlarged later and became a watery soft rot. Infected parts became yellow and then turned brown, followed by death of the whole plant. White mycelia developed on the upper petioles and leaves and on the soil where these plant parts lay. Then black sclerotia in variable size and shape formed from the mycelial mass. Pathogenicity of the fungus was proven by artificially inoculating each crop. This is the first report of Sclerotinia rot on the listed vegetable crops in Korea.

• 한국균학회지
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• 제14권1호
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• pp.89-91
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• 1986

Sixteen seed samples of nine vegetable crops imported from Japan were tested for plant quarantine by routine methods of seed health testing. Nineteen species of fungi including Alternara alternata were identified from the seed samples. Some species were very frequently detected in the seeds. In this experiment, Verticillium albo-atrum, V. dahliae and Macrophomina sp. from the seeds of spinach, and Cercospora capsici, Drechslera hawaiiensis and V. albo-atrum from the seeds of sweet pepper were detected for the first time, respectively. It has been reported that they had a pathogenicity on some vegetable crops in Japan and other countries. The data suggest that an epidemic damage may be occurred if the infected seeds are sown and cultivated in Korea.

• The Plant Pathology Journal
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• 제19권1호
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• pp.64-68
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• 2003

Cruciferous vegetable crops grown in several locations in Korea were surveyed from 1996 to 2000. Clubroot severely occurred up to a maximum of 100％ in Chinese cabbage fields in 15 out of 42 locations, and in cabbage fields in 5 out of 13 locations surveyed. The disease also severely occurred up to a maximum of 40％ in radish fields in 6 out of 35 locations, and up to a maximum of 40% and 100％ in turnip and brown mustard fields in one each out of the few locations surveyed, respectively. The disease occurred less than l％ in one kale field in one out of two locations surveyed. A total of 268 isolates of Plasmodiophora brassicae was obtained from six cruciferous vegetable crops. The isolates were classified into 13 races based on their pathogenicity to the differential varieties of cabbage and rutabaga. There were 13 races found in isolates from Chinese cabbage, while 6 races each were found in isolates from cabbage and radish. There were five and three races found in turnip and brown mustard isolates, respectively. One isolate from kale was identified as race 8. Race 8 was the most frequently isolated from five cruciferous vegetable crops, except brown mustard. Races 3 and 14 were isolated only from Chinese cabbage.

• 인간식물환경학회지
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• 제23권5호
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• pp.495-506
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• 2020

Background and objective: This study conducted a conjoint analysis on early childhood teachers to find out their preferences in horticultural activities that are used as a means of education in early childhood education. Methods: For the conjoint analysis, five attributes of horticultural activities were selected. Attribute 1 was method of horticultural activities, divided into two levels: exclusive and integrated horticultural activities. Attribute 2 was object of horticultural activities, divided into three levels: fruit crops, vegetable crops, and floricultural crops. Attribute 3 was activity type, divided into three levels: big and small group, free choice, and outdoor play. Attribute 4 was place for horticultural activities, and divided into two levels: indoors and outdoors. Attribute 5 was time for horticultural activities, divided into two levels: 30 minutes and 30-60 minutes. The orthogonal design was used to extract 20 profiles, after which we conducted a survey on 320 early childhood teachers and analyzed the valid responses from 257 teachers. Results: The preference of early childhood teachers showed highest importance in object (29.1%), followed by activity type (23.2%), activity method (17.4%), time (16.1%), and place (14.2%) (Pearson's R = .591, p = .008). By level of each attribute, the importance was high in exclusive horticultural activities for activity method, big and small group for activity type, vegetable and floricultural crops for object, indoors for place, and 30 minutes for time. Conclusion: The horticultural program preferred by early childhood teachers is comprised of big and small group activities using vegetable and floricultural crops, carried out indoors for 30 minutes as an exclusive class.

• 한국지역사회생활과학회지
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• 제27권4호
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• pp.779-794
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• 2016

In this study, a functional vegetable garden model is proposed for vegetable gardening users in urban areas to grow different vegetables for various purposes. H vegetable garden user(uneducated) and Y vegetable garden user(educated) urban vegetable gardening users were provided with the functional vegetable garden model and allowed to manage their allocated gardens directly. As the issues raised by the field work and its associated solutions were investigated, the opinions from each group were compared and analyzed. The conclusions are as follows. First, according to the usage survey for vegetable gardening, both groups responded that they had mostly cultivated vegetables. Second, with regard to the kinds of vegetables cultivated in autumn, both groups chose the vegetables required for producing Kimchi. Third, both groups responded that their interest in growing various plants was the major motivation to start gardening. Fourth, regarding the inclusion of flowers and herbs in the functional vegetable garden, more than 90% of the members of both groups responded that the level of the inclusion was appropriate or could be higher.

• 생물환경조절학회지
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• 제28권3호
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• pp.212-217
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• 2019

본 연구는 토마토의 풋마름병 감염 여부를 더 빠르게 예측하고 객관적으로 평가하기 위해 수행되었다. 이를 위해 식물 생체정보 센서를 이용하여 풋마름 병원균을 접종한 토마토에서 풋마름병에 감염되어 증상을 보이기까지의 식물체의 양수분 이동 속도를 측정하였다. 토마토의 양수분 이동 속도를 측정했을 때 육안으로 보이는 풋마름 증상이 나타나기 약 2 내지 3일 전부터 풋마름병에 감염된 토마토의 양수분 이동 속도가 감염되지 않은 토마토에 비해 감소하는 것을 볼 수 있었고 이 결과는 생물검정과 생육조사 결과와도 일치하는 것을 볼 수 있었다. 따라서 이상의 결과를 볼 때 식물 생체정보 센서를 이용하여 식물의 양수분 이동 속도를 측정함으로써 풋마름병을 조기 진단할 수 있음을 알 수 있었다.

• The Plant Pathology Journal
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• 제35권6호
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• pp.553-563
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• 2019

Investigations related with factors influencing root and crown rot are rare and mainly related to farming practice and soil management. The main objective of this study was to examine broader range of factors influencing stem-base infestation of winter wheat in the field conditions. The effect of spatial distribution of infected plants on disease index (DIs) assessments was also investigated. Analysis of factors influencing DIs of crown rot of wheat demonstrated significant influence of the growing seasons (P < 0.001) and extreme fluctuations in winter temperatures (P < 0.001). In addition to that, localities together with their interaction with the growing season also significantly influenced DIs (P < 0.001). Aggregation of infected plants influenced variability of DI estimations, and it was pointed out that more extensive investigation should be conducted on broad range of DI in order to establish sampling method giving uniform sampling precision. Fusarium graminearum was shown to be predominant Fusarium species in Serbia (72.6%) using sequence-characterized amplified region analysis. Interestingly F. oxysporum was isolated in higher frequencies (27.4%) than it was reported in the literature. Given that there were no reports on the diversity of Fusarium species causing crown rot of wheat in Serbia, this study presents first report on this important subject. It also indicated that more attention should be focused on combined effects of abiotic and biotic factors influencing stem-base infestation of winter wheat. This knowledge will contribute to better understanding of factors influencing root and crown rot of wheat which would ensure sustainable disease management in the future.

• 식물병연구
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• 제7권2호
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• pp.93-101
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• 2001

1996년부터 1998년까지 한국내 십자화과 채소작물의 포장에서 시들음병 발생을 조사한 결과, 배추와 무에서는 발생율이 최대 40%까지 심하게 발생하였으며, 양배추에서는 일부 포장에서만 약간 발생하였다. 시들음증상을 보이는 십자화과 채소작물의 병든 뿌리로부터 총 123균주의 Fusarium균이 분리하였으며, 공시균주들의 형태적 및 배양적 특성을 조사한 결과, 모두 Fusarium of oxysporum으로 동정되었다 공시균주들의 배추 및 양배추에 대한 병원성은 공시품종에 따라 다소 차이는 있었으나 균주들간에 뚜렷하게 구분되지 않았다. 무에 대한 병원성에 있어서는 대체로 무분리 균주들이 배추 및 양배추분리 균주들보다 강한 것으로 나타났다 공시균주들의 십자화과 이외의 채소작물에 대한 병원성검정 결과, 고추 등 8개 작물에 대해 모두 병원성이 없었다 이 연구결과, 배추감염 균주들의 병원형은 양배추감염 균주들의 병원형과 동일하고, 무감염 균주들의 병원형과는 다른 것으로 나타났다.

• 한국토양비료학회지
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• 제39권6호
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• pp.357-365
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• 2006

본 연구는 고랭지 주요 채소작물에 대한 적정 시비관리 및 토양관리기술의 기초 자료로 이용하고자 2003년에서 2004년까지 2년에 걸쳐 고랭지권역 792개소를 대상으로 토양관리실태 및 시비실태를 조사하였다. 그 결과 재배지역의 표고는 강원(679 m)>경북(560 m )>전북(524 m) 순으로 높은 반면, 경사는 전북(10.6%)>경북(8.2%)>강원(7.5%) 순으로 높았다. 그리고 토성은 강원과 전북은 사양토(강원 76%, 전북 64%), 경북은 양토(42%)와 사양토(35%)가 많았다. 토양의 화학성은 pH 5.7, 유기물 $27.6g\;kg^{-1}$, 유효인산 $765mg\;kg^{-1}$, 치환성의 칼륨, 칼슘 및 마그네슘은 각각 1.16, 6.1, $1.6cmol_c\;kg^{-1}$, 양이온 치환용량은 $9.2cmol_c\;kg^{-1}$이었다. 고랭지 주요작물의 시비실태 조사결과 화학비료 시비량은 토양검정 시비량에 비하여 감자는 질소 1.7~2.0배, 인산 4.2~7.0배, 칼리 1.4~2.2배, 배추는 질소 1.4~1.6배, 인산 4.6~8.3배, 칼리 3.5~4.2배, 무는 질소 1.2~1.3배, 인산 4.2~7.2배, 칼리 3.0~3.6배였다. 이와 같은 결과는 모든 작물에서 토양의 축적된 화학성분과 작물의 양분 요구도을 고려하지 않고 관행적으로 시비하고 있음을 보여 주고 있다. 특히 인산과 칼리를 과용하고 있는 것은 시급히 개선해야 할 사항으로 토양검정기준에 의한 시비관리 및 영농기술 지도가 필요할 것으로 생각된다.