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Paper Information

Journal:   PLANT AND ECOSYSTEM   WINTER 2010 , Volume 5 , Number 20; Page(s) 3 To 16.
 
Paper: 

INTRODUCTION, FREQUENCY AND DENSITY OF WEED IN CORN FIELDS OF QAZVIN PROVINCE

 
 
Author(s):  BAKHSHI KHANIKI G.R.*, AKBARI NIA A., NEKONAM G.H.
 
* ISLAMIC AZAD UNIVERSITY, PARAND BRANCH
 
Abstract: 
Weed s are the most important factors that decrease yield of crops. Weed species of field corn of Qazvin collected and identified on 2005, then their density and frequency were determined. The results of this study showed that 31 species belong to 17 genera disturbed in Qazvin corn field. The most frequent weed species were Amaranthus blitoides L., Amaranthus retroflexus L., %; Portulaca oleracea L and Setaria viridis L. respectively The life forms of Terophyta and Hemichryptophyta are the best frequent life form of Qazvin province. The most of species had Irano –Touranian distribution.
 
Keyword(s): ZEA MAYS L., WEEDS, DENSITY, QAZVIN PROVINC
 
References: 
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  Persian Abstract Yearly Visit 70
 
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