• Title, Summary, Keyword: persimon tree

Search Result 2, Processing Time 0.028 seconds

Light Resistance of Natural Dye-colored Veneer and Clear Coated Cylindrical Laminated Veneer Lumber (천연염색 단판 및 투명 도장처리 원통형 단판적층재의 내변퇴색성)

  • Kim, Jong-In;Suh, Jin-Suk;Hwang, Sung-Wook;Park, Ryeong-Jae;Park, Sang-Bum
    • Journal of the Korea Furniture Society
    • /
    • v.23 no.4
    • /
    • pp.407-414
    • /
    • 2012
  • In order to develop the end use of cylindrical laminated veneer lumber (LVL) such as wooden crafts, the light resistance properties of natural dye-colored and finished cylindrical LVL was investigated. The study results were as follows; The cross section of LVL showed the higher light resistance than its tangential section, and the light resistance also increased with surface coated. On the other hand, LVL specimen were colored by 9 natural dyes of amur cork-tree etc., and the natural and apparent hue harmonized with wood was found after coating and light resistance test. Particularly, The dyes extracted from amur cork-tree, persimon and sappan wood showed orange color, reddish brown and red color respectively, giving an accenting effect to original wood color.

  • PDF

Host Range, Occurrence and Developmental Characteristics of Ceroplastes pseudoceriferus (Homoptera : Coccidae) on Persimmon Trees (감나무에 기생하는 뿔밀깍지벌레의 기주범위, 발생소장, 각 태별 생육 특성)

  • 박종대;박인선;김규진
    • Korean journal of applied entomology
    • /
    • v.29 no.4
    • /
    • pp.269-276
    • /
    • 1990
  • This study investigated host range, seasonal occurrence and developmental characteristics of Ceroplastes pseudoceriferus Green on persimmon trees. The host plants covered 34 families and 66 species, including newly recorded species of Chenopodum album var. centrorubrum, Glycine max, Begonia semperflorens, Pharbitis nil, Perilla frutescens var. japonica and Erigeron canadensis. There was one generation of C. pseudoceriferus a year with larval stage expanding from mid-June to mid-October. Average number of eggs laid per female was 1,073$\pm$177.3. Hatching rate was 97.3% and was not affected by temperatures and photoperiods. Stadium varied as 23.4 days in eggs, 128.3 days in larvae and 213.3 days in female adults including overwintering periods at natural condition.

  • PDF