• Title/Summary/Keyword: seedling method

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Analysis of Pick-up Mechanism for Automatic Transplanter( I ) (자동 채소 정식기 묘 취출 메커니즘 분석(I))

  • Kang, Tae Gyoung;Kim, Sung Woo;Kim, Young Keun;Lee, Sang Hee;Jun, Hyeon Jong;Choi, Il Soo;Yang, Eun Young;Jang, Kil Soo;Kim, Hyeong Gon
    • Journal of agriculture & life science
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    • v.51 no.1
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    • pp.187-192
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    • 2017
  • In various crops, seedlings are preferred to seeds for faster and more effective growth, so transplanters are used for them. This 2-row transplanter was developed to promote the mechanization of vegetable transplanting work which depends on human power. and it can automatically supply seedling tray and transport picked up seedling to the planting hopper. Also, we judged performance of transplanter with comparing seedling missing plant ration according to two types of pick-up method. Result of experiment, in finger-type picking up of 265 seedlings, missing plant ratio was 13.7% with 17 failures of pick-up and 15 collapse of bed soil. and In fork-type picking up of 200 seedlings, failure of pick-up was not appeared and missing plant ratio was low as 4% with 6 dropped during transfer. Therefore for 2-row automatic transplanter, fork-type pick-up device was found to be compatible.

Greenhouse Method for Assessing Spot Blotch Resistance in Barley

  • Arabi, Mohammad Imad Eddin;Jawhar, Mohammad
    • The Plant Pathology Journal
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    • v.26 no.4
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    • pp.421-423
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    • 2010
  • New sources of barley (Hordeum vulgare L.) resistant to spot blotch, caused by Cochliobolus sativus, are needed to provide effective resistance because of the rapid change pathotype patterns of C. sativus in fields. The purposes of our study were to develop a method to screen barley for resistance to spot blotch disease and then use this methodology to screen barley genotypes for resistance to the major virulent pathotype Pt4 in barley populations in Syria. A transparent tape method, in which a conidial suspension of C. sativus was dropped onto transparent tape and placed, treated-side down, on the second leaf surface of barley plants. Disease symptoms of fungus were easily detected on the leaves covered by the transparent tape after 48h of inoculation. The transparent tape method was repeatable and the disease scores obtained were correlated (r = 0.91, P = 0.001) with those obtained by the seedling assay. This method may be beneficial in various plant pathology breeding programs.

Studies on the bacterial stem-dry-rot of pinus rigida mill (가칭 리기다소나무 거부병)

  • 이구영
    • Korean Journal of Microbiology
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    • v.1 no.1
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    • pp.45-47
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    • 1963
  • 1. A Kind of Bacillus, which was seemed to be pathogenic, was isolated from Pinus rigida planting. 2. The bacillus were grown well on the Agar-Bacto-Beef media (pH 7.4) at $30^{\circ}C$. C for 24 hours. 3. The soil infection for the one year old seedling was the best inoculating method in this experiment. 4. Almost of all characteristics were simillar between isolated and reisolated bacillus. 5. The author should like to call temporarily the name of this bacterial disease Stem-rot of pinus rigida Mill.

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On the Root Rot of Ginseng(I) (인삼근부병에 관한 연구 1)

  • 김종희;이민웅
    • Korean Journal of Microbiology
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    • v.12 no.2
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    • pp.94-98
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    • 1974
  • This study was conducted from April 1 to September 31, 1973. Ten strains of Fusarium spp. were isolated from the diseased ginseng in two local areas at Kangwha-Gun nad Kumsan-Gun in Korea. Among of them, 2 strains ($G_1$, $G_4$) did not have virulence to ginseng in reinoculation. Their cultural, morphological characteristic and hose virulence to pea seedling were examined. Taxonomical identification of 8 isolates followed by the method of Wollenweber, Snyder nad Toussoun, Booth, Matuo and Snyder. All of eight strains were identified as the Fusarium solani f.sp.pisi(Jones) Synd. et Hans.

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SMP Treatment of Tobacco Seeds to Improved Stand Establishment (입묘율 향상을 위한 담배종자의 SMP 처리)

  • 김영신;신주식
    • Journal of the Korean Society of Tobacco Science
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    • v.25 no.1
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    • pp.47-52
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    • 2003
  • The purposes of this study were to examine effect by Solid Matrix Priming(SMP) ; method far enhanced rapid and uniform seedling emergence in tobacco seeds. The results were as follows. No enhancement of germination rate was by SMP treatment. In KF114 during 9 days treatment and in KB108 during 7 days treatment, germinative energy was highest, and T50 and mean germination time were the shortest. Cells in embryo and hypocotyl were divided and extended during SMP treatment. The contents of fatty acid were increased in SMP treatment. The changes of glucose content were little.

Comparison of Resistance of Root Rot Caused by Fusarium solani in Ginseng Breeding Lines (인삼 육성계통의 Fusarium sozani에 의한 근부병 저항성 비교)

  • 천성룡;김홍진
    • Journal of Ginseng Research
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    • v.14 no.1
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    • pp.50-56
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    • 1990
  • Root-rot of ginseng caused by Fusarium solani is one of the most obstacles to ginseng cultivation. We evaluated some inoculating techniques of ginseng with Fusarium solani, for selection of disease resistant breeding lines. The most effective inoculating techniques evaluated were inserting toothpicks colonized by F. solani into the seedling roots in laboratory test and dusting seedlings with vermiculite after dipping in conidial sllspension and then replanting method in field test. The resistance to diseased by F. solani was lines of 82022 and 82066 in laboratory test. 82920-1 and 78093 in field test.

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The Characteristics of Growth, Yield and Quality of Rice(Oryza sativa L.) on the Basis of Pot Seedling Raising Method in Eco-friendly Agriculture (유기농 쌀 생산을 위한 벼 포트육묘 이앙재배의 생육특성)

  • Kwon, Young-Rip;Choi, In-Young;Moon, Young-Hun;Seo, Kyoung-Won;Sharma, Praveen Kumar;Kim, Dae-Hyang
    • Korean Journal of Environmental Agriculture
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    • v.30 no.3
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    • pp.275-280
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    • 2011
  • BACKGROUND: The present study was conducted to find out the suitable method for organic rice production on the basis of different seedling raising methods at nine eco-friendly agricultural units of Samgi, Mangsung, Iksan and Sungsan, Gusan of Jeollabuk-do, during 2009-10. METHODS AND RESULTS: On the basis of yield and physiological parameters, pot seeding method was found to be superior to drill seeding and broadcast seeding methods. The number of panicle, grain, the precent of ripened grains, and the 1,000 grain weight, were better in pot seeding method. Maximum yield and other attributes were recorded in rice, cultivated with seedlings raised by pot and broadcast seeding method. Number of panicle/hill and grain/panicle was 10.4% and 35.1% higher than the broadcast seeding method, respectively. Yield also showed 8.8% increase in pot seeding method as compare to broadcast seeding method. Higher grain yield was obtained when 56 hills/$3.3m^2$ of rice seedlings were used as compare to 50 hills/$3.3m^2$ raised by pot seeding method and 70 hills/$3.3m^2$ of broadcast seeding method. Lodging was minimum in seedlings raised with pot seeding method as thickness of third internode was more (9.0%) than the seedlings, raised with broadcast seeding method. Root length and dry weight also showed similar tendency i.e. 13.8% and 25.3% higher, respectively. CONCLUSION(s): Quality and grade of rice, cultivated with pot seeding method was better than broadcast seeding method. Head rice was 4.4% higher; and protein content and broken rice grown by pot seeding method were 0.4% and 1.8% lower than broadcast seeding method, respectively.

A Simple Method for Assessing Severity of Common Root Rot on Barley

  • Arabi, Mohammad Imad Eddin;Jawhar, Mohammad
    • The Plant Pathology Journal
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    • v.29 no.4
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    • pp.451-453
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    • 2013
  • Common root rot caused by Cochliobolus sativus is a serious disease of barley. A simple and reliable method for assessing this disease would enhance our capacity in identifying resistance sources and developing resistant barley cultivars. In searching for such a method, a conidial suspension of C. sativus was dropped onto sterilized elongated subcrown internodes and incubated in sandwich filter paper using polyethylene transparent envelopes. Initial disease symptoms were easily detected after 48h of inoculation. Highly significant correlation coefficients were found in each experiment (A, B and C) between sandwich filter paper and seedling assays, indicating that this testing procedure was reliable. The method presented facilitates a rapid pre-selection under uniform conditions which is of importance from a breeder's point of view.