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Articles by Riaz Ahmad
Total Records ( 6 ) for Riaz Ahmad
  Muhammad Shakeel Ahmad , Tariq Mukhtar and Riaz Ahmad
  The effects of water extracts of neem (Azadirachta indica), Ak (Calotropis procera) and datura (Datura alba) were seen on the larval mortality of citrus nematode (Tylenchulus semipenetrans). The results were highly significant and revealed that of the three test plants; neem gave the maximum larval mortality followed by Ak and datura. The standard extracts were more toxic to Tylenchulus semipenetrans larvae than other concentrations. Similarly, maximum mortality was recorded after 48 h of exposure followed by 24 and 12 h. When the standard extracts of leaves of the test plants were applied in pots on Citrus jambhiri, growth variables were enhanced to the maximum by neem followed by Ak and datura. On the other hand significant reductions were recorded in nematode populations and rate of multiplication in treatments where extracts were applied as compared to control.
  Hamayun Khan , Muhammad Misri Rind , Riaz Ahmad , Nazir Ahmad and Ghiasuddin Shah
  The research work was conducted on 80 adult goats, 40 from each male and female, slaughtered at different slaughterhouses of Hyderabad city. The mean length, width and thickness of right kidney of male goat was 6.10?0.40, 3.60?0.50, 2.29?0.44 cm while that of the left kidney was 6.30?0.39, 3.59?0.47 and 2.20?0.11cm respectively. The circumference, length of medial and lateral border of right kidney of male goat was 9.54?1.10, 10.88?1.2 and 11.87?1.33cm and that of left kidney was 9.49?0.99, 10.83?1.19, 11.80?1.36cm respectively. The mean length, width and thickness of right kidney of female goat was 6.18?2.30, 3.24?0.39 and 2.36?0.42cm while that of the left kidney was 6.32?0.38,3.19?0.36 and 2.87?0.45cm respectively. The circumference, length of medical and lateral border of right kidney of female goat was 9.88?0.90, 10.79?1.33 and 11.93?1.29cm, while that of left kidney was 9.84?0.92, 10.85?1.21 and 11.87?1.40cm. The mean weight of right and left kidney of male goat was 66.41?10.0g and 65.67?9.97g respectively. The mean weight of right and left kidney of female was 66.34?10.98g and 65.40?11.0g respectively. Present research showed significant difference in the mean length and thickness of right and left kidney of male goat and also in the mean length of right kidney of female goat other parameters regarding biometry of right and left kidney of both sexes remained non-significant.
  Asadullah khan , Riaz Ahmad , Umar Saddique , Hamayun Khan , Mohammad Zubair and Younas Mohammad
  The present study showed the Sero-surveillance of Hemorrhagic septicemia in cattle and buffalo in Malakand division of NWFP, Pakistan. The average GMT was recorded against hemorrhagic septicemia in buffaloes in the range of 4.12 to 46.98, while those in cattle were recorded in the range of 4.45 to 46.40. In young buffalo calves, incidence rate, mortality and morbidity rate was observed as 22.25, 21.19 and 95.25%, respectively. In adult buffalo morbidity, mortality and case fatality rate was 5.49, 1.65 and 30%, respectively. In study of young cattle calves morbidity, mortality and case fatality was recorded as 3.94, 1.77 and 45%, respectively. While in study of adult cattle, morbidity, mortality and case fatality rates were recorded as 2.51, 0.39 and 15.79%, respectively. During present investigation the incidence rate, mortality and case fatality due to Hemorrhagic septicemia was found greater in the young calves as compared to the adult in both buffalo and cattle.
  Nazir Javed , H.U. Khan and Riaz Ahmad
  Selection of the most suitable host for the mass production of P. penetrans revealed that brinjal was the most suitable host followed by mungbean, mash and cowpea. It was due to more invasions sites present in the brinjal roots, which provided more penetration of nematodes in the roots. The relationship of quantity of roots and amount of spores revealed that within the host more amount of roots produced more endospores but amongst the hosts it did not happen.
  Muhammad Saeed , Ata Ullah , Riaz Ahmad and Abdul Jabbar
  Bioeconomic efficiency of different rice-based intercropping systems under different patterns of strip plantation was determined at Faisalabad during the year 1997. Strip plantation of rice comprised 45-cm spaced 2-row strips, 75-cm spaced 4-row strips and 105-cm spaced 6-row strips while intercrops were maize, cowpea, sesbania and ricebean. All intercrops were utilized as green fodder crops. Although all intercrops caused substantial reduction in both plant biomass and paddy yield ha -1 of the associated rice yet additional fodder yield from each intercrop not only compensated the reduction in plant biomass and paddy yield of rice but also increased farm net income by 19.69 to 125.33 per cent. Thus both legume (cowpea, sesbania, ricebean) and non-legume (maize) fodder crops can be intercropped in the upland rice seeded on a well prepared seedbed in 75-cm spaced 4-row strips in order to increase farm income per unit area. Maize intercropping gives the maximum net income. Besides neither planting pattern nor intercropping affect the qualitative traits such as proportion of normal, fertile, sterile, abortive and opaque spikelets in a panicle of rice.
  Mohammad Arif , Khair Mohammad Kakar , Riaz Ahmad and Shaukat Ali
  The effect of tillage operations, one plough (minimum tillage), two plough (conventional tillage) and four plough (maximum tillage) and seed rates, 75, 100, 125, 150 and 175 kg ha–1 on wheat were studied. Statistical analysis of the data revealed that different tillage operations had significantly affected tillers/m2, thousand grain weight, number of grains/spike and grain yield. Maximum tillers/m2 (305), thousand grain weight (43.2 g), number of grains/spike (57) and grain yield (6266 kg ha–1) were obtained from plots ploughed four times. Maximum tillers/m2 (324), grains per spike (59), thousand grain weight (42.9) and grain yield (6266 kg ha–1) were recorded at seed rate of 100 kg ha–1. Interaction between tillage practices and seed rate had a significant effect on tillers/m2, thousand grain weight, number of grains/spike and grain yield of wheat. As interaction between tillage operations and seed rates was significant therefore separate regressions were fitted to the data and xmax was calculated from the equation Y = a+bx+cx2 for each parameter and treatment as -b/2c.
 
 
 
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