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In this study, the test method, examining damage degree depended fundamentaly on that of Nagano Forestry Experimental Office. But we devised a new method, modifiing them. On the assumption that there were no healthy trees on that stand, we have the following items about the damaged degree. I observing on all new shoots of crown per a tree, I-type; diseased shoots are recognized a few or little. (slightly damaged tree.) Ill-type; the case except I and V type. (moderated damaged tree.) V-type; diseased shoots are recognized 50% over. (heavily damaged tree.) II observing on only terminal shoot per a tree, a; terminal shoot, standing erect, and can\u0027t distinguish from healthy shoot. b; terminal shoot, standing erect, but leaves (its shoot, having) shrinking or already dropping off. c; terminal shoot, crooked, and leaves, having or not Furthermore, we examined the number of making new shoots and of becoming like a broom in each tree. 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  1. 070 農学部, 大学院農学研究科
  2. 0702 紀要 ・刊行物
  3. 07025 信州大学農学部演習林報告
  4. Vol. 15

カラマツ先枯病に感染した林分の生産力について

http://hdl.handle.net/10091/13991
http://hdl.handle.net/10091/13991
c5e5cd3e-1f78-4eed-a61f-b906b3b9e211
名前 / ファイル ライセンス アクション
Agri_Forests-15-01.pdf Agri_Forests-15-01.pdf (727.9 kB)
Item type 紀要論文 / Departmental Bulletin Paper(1)
公開日 2012-03-07
タイトル
言語 ja
タイトル カラマツ先枯病に感染した林分の生産力について
タイトル
言語 en
タイトル The productivity of Larix stand infected by shoot blight disease
言語
言語 jpn
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ departmental bulletin paper
著者 川崎, 圭造

× 川崎, 圭造

WEKO 35162

川崎, 圭造

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菅, 誠

× 菅, 誠

WEKO 35163

菅, 誠

Search repository
浅田, 節夫

× 浅田, 節夫

WEKO 35164

浅田, 節夫

Search repository
出版者
出版者 信州大学農学部附属演習林
引用
内容記述タイプ Other
内容記述 信州大学農学部演習林報告 15: 1-14(1978)
書誌情報 信州大学農学部演習林報告

巻 15, p. 1-14, 発行日 1978-10-15
抄録
内容記述タイプ Abstract
内容記述 For the purpose of obtaining a correlation between the damage of larch shoots infected by shoot blight disease and the growth of that stand, we have tried some examination in the plantation of seriously damaged these stands at two district forests in Nagano Prefecture, 1976-77. In this study, the test method, examining damage degree depended fundamentaly on that of Nagano Forestry Experimental Office. But we devised a new method, modifiing them. On the assumption that there were no healthy trees on that stand, we have the following items about the damaged degree. I observing on all new shoots of crown per a tree, I-type; diseased shoots are recognized a few or little. (slightly damaged tree.) Ill-type; the case except I and V type. (moderated damaged tree.) V-type; diseased shoots are recognized 50% over. (heavily damaged tree.) II observing on only terminal shoot per a tree, a; terminal shoot, standing erect, and can't distinguish from healthy shoot. b; terminal shoot, standing erect, but leaves (its shoot, having) shrinking or already dropping off. c; terminal shoot, crooked, and leaves, having or not Furthermore, we examined the number of making new shoots and of becoming like a broom in each tree. In this examination, we had 9 plots on the plantation of larch stand, and among these plots, 4 plots were situated on the Enrei mountain pass in Okaya City and 5 plots in Omagari district near the Kirigamine hill in Suwa City, Nagano Prefecture. In the former case (Enrei), 4 plots were as follows, 1 young aged stand was 8th years old, 2 middle aged stands were about 12th years old and 1 adult aged stand was 35th-40th years old. In the latter case (Omagari), 5 plots were almost same age, 10th-11th years old. From these observation, we summerized following three points. (i) Appearance of diseased type; As a result of both young and middle aged stands in Eneri plot, V type's apperance (%), showing high percentage, 44% and 25-65% respectively, and in middle aged stand, the percentage was more changeable, it seemed to due to a element of the condition of these stands. In adult stand, crown's form was remarkably effected by strong wind strength, so that, we could not be clear to the damage degree itself. In Omagari district, the diseased degree was slighter than that of Enrei, and generally belonging to the III-type. Thus, we seemed to have a conclusion that the diseased degree was obviously effected by the element of topography of these stands. (ii) Growth height; The diseased larch stand decreased remarkably growth height, in other words, a stand, containing mainly in V-type trees, produced lower than that of I-and Ill-type in height growth. (iii) Topography and diseased type; The larch plantation stands were often situated near the ridge top of a hill or were seldom exposed to strong wind. In these cases, V-type trees seemed to appeared, on the contrary, situated on less blowing wind or on saddle, I-or Ill-type trees generally seemed to do. Finally, from the stem-analysis, we found out the result that the diseased trees generally decreased the growth of height since 1973, and this period agreed with the same year of which the disease of shoot blight was introduced into these districts.
資源タイプ(コンテンツの種類)
内容記述タイプ Other
内容記述 Article
ISSN
収録物識別子タイプ ISSN
収録物識別子 0559-8613
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AN00121330
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
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