Tree and Forest Health
Online ISSN : 2189-7204
Print ISSN : 1344-0268
ISSN-L : 1344-0268
Volume 23 , Issue 1
Showing 1-17 articles out of 17 articles from the selected issue
Original articles
  • Nao Fujiwara-Tsujii, Hiroe Yasui, Tetsuya Yasuda
    2019 Volume 23 Issue 1 Pages 1-6
    Published: January 31, 2019
    Released: March 01, 2021
    JOURNALS FREE ACCESS

    Three groups of adult Anoplophora malasiaca (Coleoptera: Cerambycidae) females fed on mandarin orange (MO), Japanese black pine (JBP), and Japanese white pine (JWP) branches for 2 weeks were compared for oocyte development and survival rates. Survival rates after 2 weeks of feeding on MO, JBP, and JWP branches were 100, 37, and 40%, respectively. In the two-choice tests (MO vs. JBP and MO vs. JWP), all females preferred MO, rather than JBP or JWP. MO-fed females developed several mature and immature oocytes in their ovaries after 1 and 2 weeks of feeding. However, none of the JBP- and JWP-fed females developed any oocytes. Thus, JBP and JWP are not suitable food plants for adult A. malasiaca females.

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  • Yuichi Yamaoka, Mikio Kusunoki, Izumi Okane, Kiwamu Fujita, Yasutada K ...
    2019 Volume 23 Issue 1 Pages 7-13
    Published: January 31, 2019
    Released: March 01, 2021
    JOURNALS FREE ACCESS

    We evaluated the effectiveness of four fungicides for the control of pine needle rust caused by Coleosporium phellodendri in Japanese black pine and Japanese red pine seedlings in fields in Kagawa and Nagano, Japan. The seedlings were planted in nurseries close to amur corktrees (Phellodendron amurense) naturally infected with Co. phellodendri. Among the fungicides used, manzeb WP was consistently the most effective, offering 98.2-100% protection. Although the other three fungicides exhibited low to high effectiveness, depending on the experiment, hexaconazole FL was the second-most protective (54.0-90.9%), followed by thiophanate-methyl WP (43.5-49.1%).

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