• Title/Summary/Keyword: horticultural crops

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An Analysis on the Preference of Early Childhood Teachers in Horticultural Activities Based on Conjoint Analysis

  • Jeong, Yeojin;Kim, Mijin;Chang, Taegwon;Yun, Sukyoung
    • Journal of People, Plants, and Environment
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    • v.23 no.5
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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.

Weed Control in Horticultural Crops in Korea (원예작물의 잡초방제 현황과 전망)

  • Chae-Don Ban
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.23 no.3
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    • pp.73-82
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    • 1978
  • Researches on weed control in vegetable and fruits are reviewed in the aspects of technical dissemination of research results and problems to be solved for the establishment of integrated weed control measures. The future researches in relation to the possible changes of cultivation pattern in horticultural crops are also discussed. The current situation of weed control in horticulture in general is classed as a primitive stage comparing to other food crops and is well behind of other advanced countries. It is strongly suggested that only steady and extensive researches in this field will produce a significant contribution to the minimization of labor cost in horticultural crop production.

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Phylogenetic analysis and biological characterization of Stemphylium species isolated from Allium crops

  • Chang-Gi Back;You-Kyung Han;Walftor Bin Dumin;Jong-Han Park;Ji-Won Han;Yeoung-Seok Bae
    • Korean Journal of Agricultural Science
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    • v.49 no.1
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    • pp.113-120
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    • 2022
  • Leaf blight disease caused by Stemphylium species is an important disease in Allium crops, specifically onion, garlic and welsh onion. In 2018, leaf blight symptoms were severe and damaged onion and garlic in Jeonnam province in Korea. In addition, small purple spots on garlic burbs were observed in a post-harvest storage warehouse. Several Stemphylium isolates were isolated from diseased leaves from the field and from garlic bulb samples and were analyzed in terms of homology and the phylogenetic relationship based on the internal transcribed spacer region and calmodulin gene sequence. The results showed that among three Stemphylium species identified, S. vesicarium is most prevalent on onion and garlic. S. eturmiunum was for the first time identified as pathogenic to onion and garlic, whereas S. solani was found in welsh onion crops. Although these isolates grew well at the optimum temperature at 20 - 25℃, they could also grow at low temperatures of 10 - 15℃. A pathogenicity test was conducted using S. vesicarium and S. eturmiunum on onion and garlic respectively. These results showed that two Stemphylium species were highly virulent with cross pathogenicity in onion and garlic. The results of this study can support the biological characterization of Stemphylium species in Korea. Moreover, further research will need to develop fungicide application strategies for onion and garlic crops.

A trend analysis of the cultivation status of medicinal crop farmers in Korea

  • Lee, Eun Song;An, Tae Jin;Park, Woo Tae;Jeong, Jin Tae;Lee, Yun Ji;Hur, Mok;Han, Jong Won;Han, Sin Hee;Kim, Young Guk;Park, Chun Geon;Chang, Jae Ki;Kim, Yong Il
    • Korean Journal of Agricultural Science
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    • v.47 no.1
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    • pp.139-161
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    • 2020
  • The aims of this study were to classify the cultivation status of medicinal crop farmers and to obtain basic data on domestic medicinal crops. To this end, 406 medicinal crop farmers participating in farming education programs in 14 cities and counties were surveyed over 10 months. The results were as follows. First, the biggest difficulty farmers faced in the overall production of medicinal crops was a lack of cultivation skills. Second, in a detailed inquiry about each difficulty item, the most difficult problems were injury by continuous cropping of root-using crops, shortage of specific farm machinery, uncertain market prices, and lack of knowledge about pest control or the positive list system (PLS). Third, the profitability of medicinal crops increased with career experience. Among the farmers who earned profits, requests for education and technical guidance were the most important factors for profitability. Fourth, the results of the analysis suggest that to achieve stable cultivation of medicinal crops, the following items need to be addressed: development and supply of basic cultivation technologies, climate response, registration of pest control pesticides, a solution to the injury by continuous cropping, and contracting cultivation expansion. Additionally, to improve profitability, it is necessary to create conditions that enable the same crops to grow for a long time in one region.

The study of the uses of agricultural products in the "Kyuhap-Chongseo" ("규합총서" 에 나타난 농산물 이용 고찰)

  • 김미희;유명님;최배영;안현숙
    • Journal of Families and Better Life
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    • v.21 no.1
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    • pp.113-127
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    • 2003
  • This paper aims to provide the basic data about the uses of agricultural products related to food, cloth and shelter in the late Joseon Dynasty by analysing$\ulcorner$Kyuhap-Chongseo$\lrcorner$(1809). The results of this study are as follows: 1. The agricultural products related to cloth, food and shelter were of 95 species total(horticultural crops 37.9%, industrial crops 22.1%, food crops 13.7%, floricultural crops 13.7%. and animal products 12.6%). 2. The agricultural products(24species) related to clothing were used for weaving, dyeing, laundering and starching textiles. 80 species of agricultural products were used as ingredients in about 140 dishes. As for shelter, the agricultural products(30species) were used for making stationaries. managing vessels and illumination, and building structures.

Thrips in Medicinal Crops in Korea:Identification and Their Damages (국내 주요 약용작물에 발생하는 총채벌레의 종류와 피해)

  • Kang, Taek Jun;Ahn, Seung Joon;An, Tae Jin;Cho, Myoung Rae;Jeon, Heung Yong;Jung, Jae A
    • Korean Journal of Medicinal Crop Science
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    • v.20 no.6
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    • pp.487-492
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    • 2012
  • Damages of medicinal crops by thrips and identification of thrips species were investigated by periodic surveys on major medicinal crops, Platycodon grandiflorum, Schizandra chinensis, Codonopsis lanceolata, Lycium chinense, Bupleurum falcatum, Ledebouriella seseloides, Angelica gigas, Glycyrrhiza uralensis, Liriope platyphylla, Atractyloides sp., once or twice a month in Suwon, Eumseong, Jecheon, Pyeongchang, Chyungyang from May to October in 2012. Thrips and their damages were found at all of the medicinal crops investigated, mostly occurring at early growing stages of each medicinal crop and causing apical meristem region withered, thereby inhibiting the growth of plants. For species identification of thrips collected from each medicinal crops, DNA from each individual was extracted and ITS2 and COI regions were amplified by PCR. As a result, Frankliniella intonsa, Thrips tabaci, and Megalurothrips distalis have been identified as dominant species on medicinal crops in open field, whereas Frankliniella occidentalis was restricted to Lycium chinense in which protected cultivation. This study suggests that the occurrence of thrips species on medicinal crops seems to be affected by host specificity and environmental factors such as cultivation types.

An Exploration of Crops Listed in Gwanhyuji, an Agricultural Book in the Joseon Dynasty for the Promotion of the Diversity of Urban Gardens

  • Hong, In-Kyoung;Chae, Young;Lee, Sang-Mi;Jung, Young-Bin
    • Journal of People, Plants, and Environment
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    • v.22 no.4
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    • pp.341-354
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    • 2019
  • Urban agriculture, which promotes communication in vulnerable classes and the formation of social networks has been gaining attention with an emphasis on healthy city, elderly-friendly city, safe city and happy city as future keywords about urban life. There is a growing interest in public awareness in many areas such as health, society, economy, and ecology. As an attempt to improve the diversity of urban gardens, this study begins with collecting suitable crops for urban gardens from "Imwongyeongjeji (林園經濟志)," an encyclopedia written by Yoo-Ku Seo, a scholar in the 18-19th century. Out of those recorded in "Gwanhyuji (灌畦志)," 128 kinds of crops with linkage of the historical achievements of the realists who gave their priority to public welfare were selected and 53 crops which had traditionality, historicality, health functionality and popularity were finally selected. The properties (cold, warm, clam) of the selected crops were evenly distributed, and there was no crop that was hot and cool. In addition, the number of crops that have a sweet taste was the highest, followed by spicy and bitter, but there was no salty vegetable, which can be attributed to the fact that 12 namuls (wild vegetables) that grow in seas were excluded in this study since they were not suitable for urban gardens. Urban gardens can be transformed from those that focus on primary production and secondary consumption activities into a new resource that offers educational and traditional values by applying humanities to urban agriculture as a content resource in the era of cultural consilience and convergence. It is expected to satisfy urban residents' intellectual and participatory needs and to enhance the diversity and utility of urban gardens by applying traditional knowledge to a new model of urban agriculture. We hope that further research will be conducted to develop new types and models of urban agriculture going forward.

Analysis of Plant Species in Elementary School Textbooks in South Korea

  • Kwon, Min Hyeong
    • Journal of People, Plants, and Environment
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    • v.24 no.5
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    • pp.485-498
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    • 2021
  • Background and objective: This study was conducted to find out the status of plant utilization in the current textbooks by analyzing the plants by grade and subject in the national textbooks for all elementary school grades in the 2015 revised curriculum in Korea. Methods: The data collected was analyzed using Microsoft Office Excel to obtain the frequency and ratio of collected plant data and SPSS for Windows 26.0 to determine learning content areas by grade and the R program was used to visualize the learning content areas. Results: A total of 232 species of plants were presented 1,047 times in the national textbooks. Based on an analysis of the plants presented by grade, the species that continued to increase in the lower grades tended to decrease in the fifth and sixth grades, the upper grades of elementary school. As for the number and frequency of plant species by subject, Korean Language had the highest number and frequency of plant species. The types of presentation of plants in textbooks were mainly text, followed by illustrations and photos of plants, which were largely used in first grade textbooks. In addition, as for the area of learning contents in which plants are used, in the lower grades, plants were used in the linguistic domain, and in the upper grades, in the botanical and environmental domains of the natural sciences. Herbaceous plants were presented more than woody plants, and according to an analysis of the plants based on the classification of crops, horticultural crops were presented the most, followed by food crops. Out of horticultural crops, flowering plants were found the most diversity with 63 species, but the plants that appeared most frequently were fruit trees that are commonly encountered in real life. Conclusion: As a result of this study, various plant species were included in elementary school textbooks, but most of them were horticultural crops encountered in real life depending on their use. Nevertheless, plant species with high frequency have continued a similar trend of frequency from the previous curriculums. Therefore, in the next curriculum, plant learning materials should be reflected according to social changes and students' preference for plants.