• Title/Summary/Keyword: 해충피해

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Control Methods of Spot Damage by Fruit Sucking Pests on Yuzu (Citrus junos) fruit (유자과실의 흡즙충류에 의한 반점피해 방제에 관하여)

  • 최덕수;김은식;김동관;김규진
    • Korean journal of applied entomology
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    • v.40 no.1
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    • pp.77-82
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    • 2001
  • Flying behavior during nighttime and control methods of fruit sucking pests were investigated in yuzu (Citrus junos) groves at Koheung area from August to November in 1999. Among the 3 kind of bulbs with different color (white, blue and yellow), white bulb attracted the most number of fruit sucking pests . The 93 percent of the moths was attracted from sunset to 24 o\`clock. Main flying time of hemipteriods in early, mid, and late October were from 22 to 04 o\`clock, sunset to 02 o\`clock and sunset to 24 o\`clock, respectively. Their flying time become earlier as the night temperature declines. For control of fruit sucking pests, attraction liquid traps, light traps (100 W) and illumination light bulb were set up in the yuzu groves (1,000 $\m^2$) from the 1 st October to the 3rd November. Attraction liquid was composed of a raw rice wine 2,000 ml+black sugar 100 g+vinegar 100 ml. When established at 3 sites per 1,000 $\m^2$ orchard, attraction liquid trap reduced the number of sucking spots on yuzu fruit to 64% and its attracting effect maintained for 3 weeks after setting-up. Three light traps per 1,000 m2 which turned on from sunset to 02 o\`clock reduced the number of sucking spots by 60% .

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Delia platura (Meigen) as a Soybean Insect Pest (씨고자리파리(Delia platura (Meigen))에 의한 대두의 피해정도와 생산성 변화)

  • 김태홍
    • Korean journal of applied entomology
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    • v.31 no.2
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    • pp.174-181
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    • 1992
  • Early, mid, and late maturing soybean varieties were artificially infested with larvae of Delia platura at seeding, and then later development and productivity of soybeans were studied. In addition, in hope to utilize as possible tactics in the management of D. platura in soybeans, cultural factors such as contents of organic matter in soil, soil types, and the use of plastic mulching on the degree of damage to soybean plants by D. platura were examined. Primary leaf damage by the larva delayed the forthcoming vegetative growth but not the blooming which is initiated by the change in day length. Degree of delay in growth was more severe where leaf damage was induced by insect infestation than where artificially excised, apparently owing to simultaneous damage in stems and roots besides primary leaves. Productivity of soybeans also dropped significantly in plants with 25 % or more loss in the primary leaf area by the larva. Both transparent and black plastic mulchings shortened the period from seeding to emergence of soybean thus reducing the chance of possible attack by the larva. Soybean seedlings grown in clay loam or clay were attacked less by the larva than those in other types of soil. High organic matter content in the soil enhanced speed of emergence resulting in less larval damage to the seedling.

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병해충 방제 - 조경수의 병해충 - 상록활엽조경수의 깍지벌레류 피해

  • Choe, Gwang-Sik
    • Landscaping Tree
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    • s.126
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    • pp.40-45
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    • 2012
  • 지구촌의 기후변화로 점점 북상하고 있는 난대수종 중 특히 상록활엽수가 최근 정원수와 조경수로 각광을 받고 있고, 앞으로 이들 수종에 대한 많은 연구가 선행되어야 하는데 이들에게 피해를 주는 흡즙성 해충 중 주요 깍지벌레 종에 대하여 특징과 생리 생태 및 방제법에 대하여 간단히 소개하고자 한다.

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Studies on Ecology of Mulberry Shoot Gall Midge, Diplosis mori. Y. and the Effective Method of Control (뽕나무 순집이파리의 생태학적 연구 및 기 방제법 시험)

  • 박병희;전대약
    • Journal of Sericultural and Entomological Science
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    • v.1
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    • pp.22-26
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    • 1960
  • Diplosis mori Yokoyama는 우리나라 함경북도를 제외한 전국에서 분포하며, (1939광모) 상수에 주는 피해가 크다. 특히 하추잠기에 있어서 해충에 의한 피해는 막대한 것이며, 수엽량이 30%내외가 감소될 뿐만 아니라, 선서성장을 정지시키고, 액아를 족생시키는 결과를 가져 온다. (중략)

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