• Title/Summary/Keyword: PEST

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Application of the Internet GIS on Rice Pest Information (인터넷 GIS를 이용한 벼 병해충 정보제공에 관한 연구)

  • 조정호;심정민;윤홍식
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.17 no.4
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    • pp.383-391
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    • 1999
  • This paper describe the interpretation of population density of rice pest in 1998 all over the country using GIS technique and the development of Internet GIS for sharing and analyzing information through Internee. Due to the widespread availability of computer network, GIS solution is available to users on your Internet via the web. Through Internet Rice Pest Information System developed visually the related information of rice pest all over the country and also interactive communication with the web interface concerning the existing system which provides simply static map, texts and numerical statement on the internet, the advantages of developed system are visually information, dynamic map, easy user interface and interactive map through the internet. This system provide more effective method of rice pest data to client.

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Arthropod Community in Small Rice Fields Managed by Different Fertilization Rate and Pesticide Application in Suwon (시비량과 농약사용을 달리한 수원지역 소규모 농가 수도포장에서의 절지동물 군집)

  • 이준호;김광호;이호진
    • The Korean Journal of Ecology
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    • v.21 no.1
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    • pp.15-26
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    • 1998
  • This study was conducted to analyze arthropod community patterns in smallrice fields managed by different cultural methods [Conventional and Low Input Sustainable Agriculture(LISA)] in Suwon in 1995 and 1996. A half of nitrogen fertilizers and a quarter of pesticides were applied in the LISA field compared to in the conventional field. Total 15 orders and 43 families of arthropods were collected in two years. No differences were found in arthropod abundance and arthropod species composition between two differently practiced fields. The arthropod community was analyzed using guild categories. The arthropods were found in the order of 'pest(phytophag)>natural enemy>non-pest' in their densities. The pest species were mainly Homoptera and dominated by Delphacidae (Nilaparvata lugens Stal and Sogatella furcifera Horvath). They constituted > 80% of pest abundance. The spider was the most dominant group in the natural enemy and constituted > 90% of natural enemy abundance. Hunting spiders constituted > 60% of spider abundance and were dominated by Pirata subpiraticus Bos. et Str.(Lycosidae). Pachygnatha clerki Sundevall(Tetragnathidae), Gnathonarium dentatum Weider and Ummeliata angulituberis Oi(Erigonidae) were the dominant species in webbing spiders.

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Damage Report on a Newly Recorded Coleopteran Pest, Aphanisticus congener (Coleoptera: Buprestidae) from Turfgrass in Korea

  • Kang, Byunghun;Kabir, Faisal Md.;Bae, Eun-Ji;Lee, Gwang Soo;Jeon, Byungduk;Lee, Dong Woon
    • Weed & Turfgrass Science
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    • v.5 no.4
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    • pp.274-279
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    • 2016
  • Aphanisticus congener is a newly recorded buprestid (Coleoptera) insect pest of turfgrass in Korea. This buprestid pest was initially found from turfgrass conservation site in a greenhouse in Jinju, Gyeongnam province, Korea in July, 2014. The Aphanisticus in the family Buprestidae is a leaf miner. A. congener is the close species of A. aeneus which was firstly reported as sugarcane leaf sucker in India. A. congener was active from early July to late August in the greenhouse. Damage by the insect led to drying out and browning of turfgrass leaf because larva fed on cell sap of leaves and adult fed on leaf surface. A. congener damaged Zoysia japonica, Z. sinica, Conodon dactylon, and Poa pratensis when adults were artificially released into potted turfgrasses in the laboratory. In green house, A. congener damaged Z. japonica, Z. macrostachya, Z. matrella, Z. sinica, Conodon dactylon, and hybrid zoysiagrass. However, no damage symptoms were observed from the same turfgrass accessions in the nearby field of the greenhouse. Thus, the new coleopteran pest may be a warm-adapted pest for turfgrass, damaging turfgrass leaf only in warmer conditions.

Automatic Calibration for Noncontinuous Observed Data using HSPF-PEST (HSPF-PEST를 이용한 불연속 실측치 자동보정)

  • Jeon, Ji-Hong;Lee, Sae-Bom
    • Journal of The Korean Society of Agricultural Engineers
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    • v.54 no.6
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    • pp.111-119
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    • 2012
  • Applicability of 8 day interval flow data for the calibration of hydrologic model was evaluated using Hydrological Simulation Program-Fortran (HSPF) at Kyungan watershed. The 8 day interval flow monitored by Ministry of Environment located at upstream was calibrated and periodically validated during 2004-2008. And continuous daily flow monitored by Ministry of Construction & Transportation (MOCT) and located at the mouth was compared with daily simulated data during 2004-2007 as spatial validation. Automatic calibration tool which is Model-Independent Parameter Estimation & Uncertainty Analysis (PEST) was applied for HSPF calibration procedure. The model efficiencies for calibration and periodic validation were 0.63 and 0.88, and model performances were fair and very good, respectively, based on criteria of calibration tolerances. Continuous daily stream flow at the mouth of Kyungan watershed were good agreement with observed continuous daily stream flow with showing 0.63 NS value. The PEST program is very useful tool for HSPF hydrologic calibration using non-continuous daily stream flow as well as continuous daily stream flow. The 8 day interval flow data monitored by MOE could be used to calibrate hydrologic model if the continuous daily stream flow is unavailable.

Automatic Calibration of Stream Flow and Nutrients Loads Using HSPF-PEST at the Bochung A Watershed (보청A유역 유량 및 영양물질 자동보정을 위한 HSPF-PEST 연계적용)

  • Jeon, Ji-Hong;Choi, Dong-Hyuk;Lim, Kyung-Jae;Kim, Tae-Dong
    • Journal of The Korean Society of Agricultural Engineers
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    • v.52 no.5
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    • pp.77-86
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    • 2010
  • Hydrologic Simulation Program-Fortran (HSPF) coupled with PEST which is optimization program was calibrated and validated at Bochung watershed by using monitoring data of water quantities and nutrient loading. Although the calibrated data were limited, model parameters of each land use type were optimized and coefficient of determinations were ranged from 0.94 to 0.99 for runoff, from 0.89 to 1.00 for TN loading, and from 0.92 to 1.00 for TP loading. The optimized hydrological parameters indicated that the forested land could retain rainfall within soil layer with high soil layer depth and infiltration rate compared with other land use type. Hydrological characteristics of paddy rice field are low infiltration rate and coefficient of roughness. The calibrated parameters related to nutrient loading indicated generation of nutrient pollution from agricultural area including upland and paddy rice field higher than other land use type resulting from fertilizer application. Overall PEST program is useful tool to calibrate HSPF automatically without consuming time and efforts.

Chemical ecology in Insect Pest Mangement

  • Guan, Zhi-He
    • Korean journal of applied entomology
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    • v.31 no.3
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    • pp.276-288
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    • 1992
  • In this paper, the author gave a brief review on the meaning and background involving the growth of chemical ecology. Semichemicals which might be developed as insect control techniques incorporating in IPM program were described. The relevant semichemicals were grouped under separate topics including intraspecific semiochemicals, or pheromones (sex pheromones, alarm pheromones, and epidiectic pheromones), and interspecific semiochemicals, or allelochemics (allomones of Plant origin, and kairomones favoring natural enemies). Here, the author dealt with those of practical aspects only. The prospects of chemical ecology in insect pest management were also proposed.

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The research on the situation and problem of domestic pest control company (국내방역회사 현황 및 문제점조사)

  • 손종렬;유성덕;김영환;이용성
    • Journal of environmental and Sanitary engineering
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    • v.17 no.4
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    • pp.39-46
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    • 2002
  • The purpose of this research was to get an alternative idea about the situation and problems of domestic pest control company We performed a questionnaire survey of 105 companies to find the situation and problems of pest control companies with and with out lincensed sanitarians. The investigation revealed the following issues and the conclusions summarized. 1. Companies with lincensed sanitarians have shown to put forth hygenic safety(62%) as first priority as to companies without sanitarians neglect hygenic safety and rank financial benefit(40%) as their priority. 2. Companies with lincensed sanitarians have directions on its use of pesticides but the companies without inspectors rely only on field experiences. 3. Companies with lincensed sanitarians are known to use the safety equipment. To the contrary, companies without sanitarians worked without the proper safety equipment safety gear. 4. Companies with sanitarians been regularly received educational Programs on chemicals used in the pest control. And then companies without did not have my other educational programs for chemicals they used.

Presticide Resistance Menagement of Pest and Beneficial Arthropods and More Biologically-Based IPM on Apple

  • Croft, B.A.
    • Korean journal of applied entomology
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    • v.32 no.4
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    • pp.373-381
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    • 1993
  • Resistance evolution to organophosphate-based pesticides in apple and pear inhabiting arthropods of western North America extends to many classes of pest and some beneficial species. Resistance management programs to minimize resistance in pests while exploiting it in natural enemies have met with mixed success. Among beneficials, resistances have been exploited mostly among predators of pest mites. Evolution of resistant mites, leafminers, leafhopper, aphids, leafrollers and some internal fruit feeders have led to development of new monitoring methods and means to delay or avoid resistance. But it is resistance to azinphosmethyl in codling moth (Cydia pomonella) that is changing the pest control system and moving it from chemical to biologically-based means. Newly merging IPM system will depend more on use of biological, cultural, behavior and genetic controls. But more selective pesticides also will be needed to augment pheromones, resistant host plants and genetically altered organisms. These more biologically-based tactics will be prone to resistance evolution in pests as well, if used too unilaterally and/or too extensively.

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Development of Computer Mapping System MAPSYS for Pest Management Research (해충관리 연구를 위한 Computer Mapping System의 개발과 응용)

  • Song Y.H.;Kim C.H.;Choi J.S.
    • Korean journal of applied entomology
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    • v.21 no.3 s.52
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    • pp.142-145
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    • 1982
  • A computer mapping system MAPSYS for data management in pest management research was developed and evaluated The computer mapping program could be used in rapididly summarizing the data from pest population management and forecasting research as well as in studying the distribution of crops, relative pest species, and the other environmental factors.

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EXTINCTION AND PERMANENCE OF A KIND OF PEST-PREDATOR MODELS WITH IMPULSIVE EFFECT AND INFINITE DELAY

  • Song, Xinyu;Guo, Hongjian
    • Journal of the Korean Mathematical Society
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    • v.44 no.2
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    • pp.327-342
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    • 2007
  • In this paper, a kind of pest-predator model with impulsive effect and infinite delay is considered by the method of chain transform. By using Floquet's theorem, it is shown that there exists a globally asymptotically stable periodic pest eradication solution when the impulsive period is less than or equal to some critical value which is a directly proportional function with respect to the population of release. Furthermore, it is proved that the system is permanent if the impulsive period is larger than some critical value. Finally, the results of the corresponding systems are compared, those results obtained in this paper are confirmed by numerical simulation.