• Korean journal of applied entomology
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• v.51 no.4
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• pp.383-388
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• 2012

This study was conducted to assess damage to the welsh onion by Acrolepiopsis sapporensis Mastumura (Lepidoptera: Acrolepiidae) during the summer season, and to estimate the economic injury level (EIL) which results, providing basic data for pest management. The adult peaks of A. sapporensis in Suwon were observed in March, April, May, and September of 2009 and 2010 through the use of pheromone traps. The feeding of A. sapporensis results in white lines on the surface, and holes within welsh onions. During the entire larval period, one larva was able to damage 1.6 leaves and punch 11.9 holes, resulting in a total damaged leaf area of $1,321.6mm^2$. Through cage experiments and larval releases, a reduction of the mean number of leaves, increased percentage of leaf damage, and reduction in gross weight and marketable weight were observed. We could obtain a regression equation that showed a clear positive correlation between pest density and percentage of damaged leaf. Using this equation, the EIL of A. sapporensis on welsh onion was calculated to one larva per 10 plants based on 7% leaf damage observed for welsh onion.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.22 no.2
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• pp.93-97
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• 1977

The rate of damaged soybean seeds by pod borer averaged 7.4% with the range of 1.2%-21.3% and tended to be higher in the lines with hairy pods comparing to those with hairless pods. The susceptibility of pod borer was negatively correlated with the pod setting date. while was not significantly affected by the weather conditions during the pod setting period.

• Korean journal of applied entomology
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• v.48 no.1
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• pp.29-35
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• 2009

Three lepidopteran insect pests of the legume pod borer, Maruca vitrata (Lepidoptera: Pyralidae), the soybean pod worm, Matsumuraeses phaseoli (Lepidoptera: Tortricidae) and an Ostrinia spp. (Lepidoptera: Pyralidae) attacking adzuki bean, Vigna angularis, were confirmed as the major insect pests during the reproductive developmental stage of adzuki bean, and M. vitrata existed dominantly. Almost all plants in the adzuki bean field were injured by at least one of the three species, and $15{\sim}60%$ of reproductive organs were injured. Unbloomed inflorescence occurred continuously through the reproductive stage of adzuki bean. While the flower was many at the early stage and its number soon decreased, the pod was few at the early stage, but its number increased soon and maintained at a constant level. The results suggested that the adzuki bean injured by insect pests compensate the flower loss by developing new inflorescence, but the compensation do not cause the development of new pods. While M. vitrata and M. phaseoli were observed in flowers, pods and stem mainly during the first half of reproductive stage of adzuki bean, Ostrinia spp. was observed only in pods and stem during the second half. In addition, while all instars of larvae of M. vitrata were observed, larvae between the third and fifth instars for M. pahseoli and Ostrinia spp. were observed.

• The Bimonthly Magazine for Agrochemicals and Plant Protection
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• v.7 no.5
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• pp.39-46
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• 1986

''2종 또는 그 이상의 작용특성이 상이한 약제의 혼합제제는 작물의 재배기간중 동시에 발생하는 병해충을 효율적으로 방제할 수 있고 저항성해충에 대한 안전방제, 방제시기 일실에 의한 피해의 최소화가 가능하며 살포회수를 줄여 노동력을 절감할 수 있고 단위면적당 살포주성분량 절감으로 농약가격을 낮출수 있다 ''

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2001.05a
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• pp.117-117
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• 2001

• Landscaping Tree
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• s.87
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• pp.17-20
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• 2005

난 아침 출근길에 다소곳이 피어있는 무궁화 꽃을 보면 암술 주변이 빨간 무늬와 5장의 하얀 꽃잎이 하나의 우주로 생각되어 나에게 이렇게 말하는 것 같다. 인간 각자 개인의 욕심을 버리고 부처님 말씀처럼 나라는 것은 본래 없고, 내가 할 일 또한 없으니 '무위의 삶의 길'을 열어주는 우주의 공간으로 내 자신이 빨려 들어가는 듯한 착각에 홀가분한 마음의 문이 아집과 자존심에서 벗어나게 해주는 신비스러운 꽃으로 생각되어 매우 기분이 좋다. 또한 8월이면 우리

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2002.05a
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• pp.74-74
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• 2002

• Proceedings of the Korean Society for Applied Microbiology Conference
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• 1977.10a
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• pp.194-195
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• 1977

농약사용량은 매년 증가하여 지난 5년간 농약 사용량은 약 3배로 증가되었고 연간 수입액도 계속 늘어가고 있는 만면에 경지 면적과 농가 수입은 매우 완만한 증가를 보이고 있으며 농약사용 비용의 증가로 농산물 생산소득은 감소하고 있는 실정이다. 더욱이 계속적인 농약사용으로 resurgence, replcaement, resistance등의 작용으로 농약사용량 보다는 농산물해충의 피해는 더 크다.(중략)

• Proceedings of the Korean Society of Applied Entomolohy Conference
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• 2005.05a
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• pp.160-160
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• 2005

• Korean journal of applied entomology
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• v.52 no.4
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• pp.437-448
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• 2013

Hemipteran bugs, which were previously considered as secondary pests, have currently become important pests of numerous crops. Among them, Riptortus pedestris (Fabricius) is a major species that occurs in Korea, Japan, China, and South Asian countries. Riptortus pedestris infests leguminous crops like soybean, vetches, and red clover; fruit trees like persimmon and yuju; and grains like barley, foxtail millet, broomcorn, and sorghum. Riptortus pedestris causes the greatest damage to soybean, as it is the most suitable host for the bug. Feeding damage during pod formation significantly reduces the yield of soybean. Currently, 17 insecticides, including diazinon and etofenprox, are registered for the control of hemipteran bugs in Korea, and growers apply insecticides two to three times on a regular basis. Aggregation pheromone traps are widely used as a monitoring tool and partial control measure. The aggregation pheromone of R. pedestris attracts conspecific adults and nymphs and is used for food exploitation rather than sexual attraction. In addition, the pheromone serves as a kairomone for egg parasitoids such as Gryon japonicum (Ashmead) and Ooencyrtus nezarae Ishii. As a new method of pest management, nonviable host eggs were included in the pheromone trap to catch R. pedestris and propagate parasitoids. As a part of cultural practices, resistant soybean varieties with specific color and size of pod and control of flowering time through the alteration of planting date can be used. For the effective management of R. pedestris in the near future, development of cultural practices that can support natural control factors and the use of multiple control tactics are needed.