文章基本信息

标题：Field study on weeds incidence in rapeseed (Brassica campestris L.).
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作者：MT Akhter ; PB Kundu ; NK Paul 等
期刊名称：Journal of Bio-Science
印刷版ISSN：1023-8654
出版年度：2018
卷号：26
页码：1-6
DOI：10.3329/jbs.v26i0.44658
语种：English
出版社：Institute of Biological Sciences, Rajshahi University
摘要：A survey was conducted to highlight the weed flora infesting rapeseed in the experimental field of Rajshahi University. Frequency (F), density (D), abundance (A), relative frequency (RF), relative density (RD), relative abundance (RA) and importance value index (IVI %) of weeds were calculated in rapeseed field. The objective of the study was to study the weeds and their quantitative characters. Weed infestation was studied in three rapeseed varieties (BARI Sharisha 14, BINA Sharisha 5 and 6). The weed population was studied using quadrat. The species which had 100% frequency values were Cyperus rotundus, Cynodon dactylon, Ammania baccifera, Echinochloa crusgalli and Leucas lavendulifolia. Other species had 50% or less than 50% frequency values. The highest frequency, density, abundance and importance value index were exhibited by Cyperus rotundus.
关键词：Abundance; Density; Frequency; Rapeseed; Weed survey