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Articles by Gulzar Ahmad
Total Records ( 2 ) for Gulzar Ahmad
  Gulzar Ahmad , Amanullah Jan , Inamullah and Muhammad Arif
  Experiments were conducted at Cereal Crops Research Institute Pirsabak Nowshera, Pakistan, during 2003-04 and 2004-05 to evaluate the impact of nitrogen (N) and sulfur (S) levels, time and methods of application on Canola (Brassica napus L. cv. Bulbul-98) under irrigated conditions. Four levels of S (0, 20, 40 and 60 kg S ha-1) and three levels of N (80, 120 and 160 kg N ha-1) and a control treatment with both nutrients at zero level were applied as a sole dose at sowing, or in two split applications (50% at sowing + 50% at leaf rosette stage), or three split applications (1/3rd at sowing + 1/3rd at leaf rosette stage+ 1/3rd at flowering). The experiments were laid out in Randomized Complete Block (RCB) Design with split plot arrangement having four replications. Treatments comprising N and S levels were applied to main plots while time of application treatments were assigned to sub plots. Analysis of the data collected from the experiments indicated that maturity of canola was delayed as N rate was increased. Increasing levels of N had progressively enhanced plant height, leaf area index and CGR up to the highest level of 160 kg N ha-1. However, harvest index, was increased up to 120 kg N ha-1. The influence of S was non-significant on days to maturity while leaf area index and harvest index, were increased significantly when S rate was increased up to the 40 kg S ha-1. However increasing rate of S continuously enhanced plant height and CGR up to the highest level of 60 kg S ha-1. There was no significant influence of the time of application of N and S on plant height, leaf area index and CGR. However, sole application of N and S at sowing resulted in early maturity and three-split applications significantly decreased harvest index of canola.
  Ansaar Ahmed , Ibni Amin Khalil , Murad Ali , Imtiaz Hussain , Muhammad Imtiaz and Gulzar Ahmad
  Background and Objective: Wheat crop is among the leading cereals and its grain is used as a staple food in many countries of the world. Several environmental factors are effecting the performance of wheat crop. Late plantation of wheat crop in Pakistan is one of the factors that reduce the yield. The main aim of this study was to identify and select superior wheat genotype with good adoptability to sowing time under the current changing climatic scenario. Materials and Methods: The present study was carried out to screen newly developed wheat lines across different sowing dates to identify appropriate planting time for these new lines. A set of 7 wheat genotypes was planted on different sowing dates, starting from October, 25-December, 25 with 10 days interval. Results: Data analyses revealed significant effect of sowing time on overall performance of wheat genotype was observed. On the average, wheat crop sown till 15th of November gave better results whereas delayed sowing resulted in reduced grain yield. Similarly, the genotypes also exhibited significant variable performance across different sowing time. However Pr-128 performed well across all sowing dates and was also identified as stable genotypes in overall performance across various sowing dates. Conclusion: From the present study it could be suggested that the most optimum time for sowing of wheat crop is 5-15 of November. Moreover, the genotype Pr-128 in addition to normal sowing it can also be used as short duration variety in those areas where the wheat sowing is delayed due to late harvesting of other crops i.e., Maize, sugarcane etc.
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