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자료유형
학술저널
저자정보
Baki, B. B. (University of Malaya) Remy, M. O. (University of Malaya) Aini, H. (University of Malaya) Khalijah, A. (University of Malaya) Fujii, Y. (National Institute for Agro-Environment Sciences) Annuar, M. S. M. (University of Malaya) Zazali, A. (University of Malaya)
저널정보
한국잡초학회 한국잡초학회지 한국잡초학회지 제29권 제3호
발행연도
2009.9
수록면
185 - 193 (9page)

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Dodder (Cuscuta campestris Yuncker) is a problematic weed in abandoned, derelict, open crop areas in Malaysia. Surveys were conducted in 2008-2009 in the state of Johore, Peninsular Malaysia to assess the extent of spread and distribution of C. campestris, and enlist its host range and damage susceptibility among crop plants and weed species. No less than 12 crop plants and 70 weed species were hosts to C. campestris in about 45,500 ha of crop and non-crop land surveyed in Johore, Peninsular Malaysia. Asystasia gangetica, Mikania micrantha, and Chromolaena odorata were the most common hosts among weed species while dodder was prevalent among cover crops (Calopogonium mucunoides and Pueraria phaseoloides), young tapioca, oil palm, and rubber plants. There were site- and host-mediated differences in the extent of spatio-temporal spread of dodder throughout the areas surveyed, although no significant differences were registered ob the extent of spread in the three consecutive surveys at 4-monthly intervals. The areas of spread range from about 0.36 ㎡ to 250,000 ㎡. The dodder populations displayed highly clumped spatial distribution pattern with variance-mean-ratio values ranging from 38.17 for Segamat populations to 123776.56 for Kota Tinggi equivalents. The parallel figures of Lloyd’s patchiness index were 1.19 and 1.38 Leaf disc of weed crop plants exposed to 1% or more of ethanol extracts of dodder indicated that A, gangetica, Ageratum conyzoides, Cassia alata, M. micrantha, Murdannia nudiflora, Phyllantus niruri, P. urinaria and Saccharum multiflorum were the most susceptible weed species, while Manihot esculenta was among the moderately susceptible crop plant.

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ABSTRACT
INTRODUCTION
MATERIALS AND METHODS
RESULTS AND DISCUSSION
REFERENCES

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