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Articles by Muhammad Tahir
Total Records ( 3 ) for Muhammad Tahir
  Muhammad Tahir , Muhammad Asghar Malik , Asif Tanveer and Rashid Ahmad
  Competition functions of different intercropping systems i.e. canola, wheat gram, lentil and linseed were compared with sole cropping of canola for two consecutive years under the field conditions. Competition behaviour of component crops across different intercropping systems and planting patterns was determined in terms of relative crowding coefficient, aggressivity and competitive ratio. Relative crowding coefficient (RCC) reflected that maximum K (4.08) was obtained from canola+one row of wheat intercropping system. Aggressivity (A) values –0.03 and 0.06 indicated that wheat was the most competitive crop to canola. Similarly, competitive ratio (CR) 0.82 and 0.51 showed that among intercrops, wheat proved to be a better competitor than other intercrops when grown in association with canola.
  Tariq Mahmood , Muhammad Arshad , Muhammad Islam Gill , Hafiz Tariq Mahmood , Muhammad Tahir and Sabahat Hussain
  Cotton Leaf Curl Virus (CLCuV) is one of the disease of cotton, which is transmitted by whitefly (Bemisia tabaci Gem). In a survey conducted during the year 2001-2002, it was observed that a new variant of Multan CLCuV was appeared on all resistant cotton varieties in culture at various locations in Vehari district especially in Burewala territory. The appearance of symptoms was experimentally confirmed through graft and whitefly transmission techniques under controlled environments at Central Cotton Research Institute, (CCRI) Multan, Pakistan. Results showed that all commercial varieties in culture, which were resistant to Multan CLCuV disease, fell prey to new variant to Burewala-CLCuV. Not with standing that even parental genetic stock from which these varieties were bred had shown their susceptibility to this new variant of Multan CLCuV (commonly known as Burewala-CLCuV).
  Muhammad Tahir , Muhammad Asghar Malik , Asif Tanveer and Rashid Ahmad
  Agro-economic advantages of different intercropping systems i.e. canola+one row of wheat, canola+two rows of wheat, canola+one row of gram, canola+two rows of gram, canola+one row of lentil, canola+two rows of lentil, canola+one row of linseed and canola+two rows of linseed were compared with sole cropping of canola for two consecutive years under field conditions. Canola seed yield equivalent, land equivalent ratio, area-time equivalent ratio and net income values of canola+one row of wheat intercropping system was higher than the other intercropping systems and sole cropping of canola.
 
 
 
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