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Articles by Tariq Mustafa
Total Records ( 1 ) for Tariq Mustafa
  Tariq Mustafa , Humayun Javed and Ibrar-ul-Hassan Akhtar
  The present research was conducted on ten different genotypes of sunflower against white fly, semilooper, plant hopper and flea beetle in research field of NARC, Islamabad during 2002.Genotypes resistance was only observed for plant hoppers. All genotypes of sunflower supported same level of resistance to white fly, semilooper and flea beetle. Insect`s pest complex shows variable response to physico-morphic characters of sunflower genotypes. White fly was positively correlated with dry weight, plant hair density, leaf area, plant height and negatively correlated with fresh weight of genotypes. Plant hopper population was positively correlated with dry weight, plant hair density and negatively correlated with fresh weight, leaf area and plant height of genotypes.Semiloooper population was positively correlated with fresh weight, leaf area and negatively correlated with dry weight, plant hair density and plant height of genotypes. Flea beetle was positively correlated with fresh weight, plant height and negatively correlated with dry weight, plant hair density and leaf area of sunflower genotypes. Impact of environmental factors including temperature, humidity and rainfall were variable on insect`s pest complex of sunflower. Impact of rain fall was maximum with range of 0-48% followed by temperature 0-28% and humidity 0-20% on insect`s pest complex of sunflower.
 
 
 
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