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      • 갓노랑 비단벌레 Scintillatrix djingischani Obenberger에 關한 硏究(第一報) : 越冬幼충과 果樹被害에 關하여 The over wintering type of larvae and it's damages.

        全南大學校開發硏究所 1964 農業科學技術硏究 Vol.2 No.-

        1) The experimernts were made by monthly interval to know the ever wintering-type of larvae of Scintillatrix djingischani Obenberger and the severity in the injury of those larvae in five varieties of apple trees and Japanese pear trees at Bia and Nowan area in Chullanamdo in 1963 and 1964. 2) The maximum number of larvae of Scintillatrix djingischani was 84.4 in. American summer pearmain and the minimum number 10 in changsimlang the average number of larvae was 39.8 in five varieties of apple trees and Japanese pear trees. In the total number of 995 of the larvae, the U type was 80.9 percent file V type 15.3percent, and the I type 3.4 percent. All the larvae were found between phloem and xylem region. 3) Parasiting on these trees the direction of larval head was quite different on mansamkil 4.16% of total number was up 79.16% low. 16.66% side, which on American summer pearmain 29.17%, low 29.17%, side 41.66%. 4) In general the branches injured by larvae were lateral as 3 years old in pear trees while the scaffold limb as 8 years old in apple trees. Many of them were found on trunk in apple trees but not on trunk in Japanese pear trees. 5) In the parasiting parts of blanches, larvae were found signficantly on the upper part of branches as compered with the lower part in both apple and pear trees. 6) The diameter of branches cut back by the damage of larvae was smaller in pear trees than that of apple trees.

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