• Title/Summary/Keyword: 문제잡초

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잡초의 어떤 속성이 잡초문제를 복잡하게 만드나?

  • 전재철
    • The Bimonthly Magazine for Agrochemicals and Plant Protection
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    • v.10 no.2 s.89
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    • pp.49-55
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    • 1989
  • 잡초생태학에 대한 지식이 잡초방제법 확립의 기초가 되고 있음은 두말할 나위가 없다. 잡초의 생존과 번무에 대한 특성을 명확하게 알지 못하고서 효율적인 잡초의 방제 및 관리를 기대하기는 어렵다. 잡초의 전반적인 특성, 이른바 잡초생물학을 자세히 파악함으로써 이를 기초로 한 유효한 방제법의 수립이 가능하고, 그 결과 작물에 대한 잡초의 피해를 최소한으로 줄일 수 있다.

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Distribution Characteristics of Paddy Weeds in Northern Gyeonggi-do (경기북부 논 잡초 분포 특성)

  • Oh, Young-Ju;Hong, Sun-Hee;Lee, Wook-Jae;Kim, Chang-Seok;Lee, In-Yong
    • Weed & Turfgrass Science
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    • v.2 no.4
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    • pp.413-420
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    • 2013
  • The climate change affects the growth and development of weeds as well as the outbreak of weeds. Especially, the occurrences of problematic paddy weeds due to climate change might cause the difficulties in weed control. This study therefore, investigated the current dominance and distribution of paddy weeds. As a result of the study on paddy weeds in northern Gyeonggi-do, there were total of 65 taxonomy groups including 23 family, 41 genus, 57 species, 7 subspecies and 1 variety. Among all the plants, 46 species were annual plants and 16 were perennial plants. Echinochloa crus-galli was the highest in importance analysis and the followings were in order of Ludwigia prostrate and Lemna paucicostata. The similarity of different paddy weeds in different regions observed through TWINSPAN analysis was distinguished by Fimbristylis miliacea, Rotala indica and Cyperus flaccidus. Regional differences shown in CCA analysis using weed species and soil environment revealed that Gimpo-si and Namyangju-si has difference soil and weeds, which are features that distinguished them from other regions. In northern Gyeonggi-do the result of paddy weed research showed the interregional difference not in dominant weeds but in distribution species.

Geographical Distribution and Importance of Crabgrass (Digitaria spp.) in the United States (미국내 바랭이의 지역적 분포와 잡초로서의 중요성)

  • ;Joseph C. Neal
    • Asian Journal of Turfgrass Science
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    • v.12 no.2
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    • pp.99-106
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    • 1998
  • 미국내에서 바랭이의 지역적 분포와 각 재배작물에서 잡초로서의 중요성을 자료화하기 위하여 설문조사를 실시하였다. 총 117개의 배포된 설문지중 72개의 설문지가 회수되어 62%의 응답률을 보였다. 미극내의 농, 원예작물 재배지역에는 5종의 바랭이가 분포하는 것으로 보고되었고, 이들은 large, smooth, southern, india 그리고 blanket crabgrass 등이었다. 이들 중 약 50% 이상의 응답자가 large crabgrass를 가장 문제잡초로 인식하고 있었다. 지역적으로 smoth와 large crabgrass는 모든 위도에서 그 우점도가 인정된 반면, southern crabgrass는 우점도가 남부지역에 제한되는 것으로 보고되었다. 바랭이는 다른 작물의 재배지역보다 잔디밭에서 그 문제가 보다 심각한 것으로 보고되었다. 남부지역의 잔디밭에서는 large, southern 그리고 smooth crabgrass의 순서로, 북부지역에서는 smooth crabgrass가 large crabgrass보다 잡초로서의 문제성이 큰 것으로 보고되었다. 대부분의 응답자들은 종내변이성이 smooth와 large crabgrass에는 존재하지 않는 것으로 응답하였으나, southern crabgrass내에는 존재하는 것으로 보고되었다.

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Current Status and Perspective of Weed Science in Asian Pacific Region (아시아·태평양 지역 잡초연구 동향 및 전망)

  • Lee, In-Yong;Lee, Jeongran;Kim, Do Soon;Park, Kee Woong
    • Weed & Turfgrass Science
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    • v.3 no.1
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    • pp.1-5
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    • 2014
  • This paper reviews current status of weed science in Asian-Pacific regional agricultural systems based on the 24th Asian-Pacific Weed Science Society Conference. About 190 researchers from 16 countries including Korea participated in the Conference and presented 160 papers in 11 research areas. Major research topics were invasive weeds and their ecology, allelopathy, weed management in paddy field, weed management in field crops, and herbicide resistance. Because rice is a major food crop in Asian countries, weed control and herbicide resistance management in paddy field were a main object of research. Weed control in maize, soybean and wheat has also been studied continuously. To prevent the increase of problematic weeds and to overcome food crisis, the importance of weed-related researches has been raised. Therefore it is expected that various weed management systems and control of herbicide resistant weeds should be studied continuously in the future.