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Articles by Amanullah Jan
Total Records ( 6 ) for Amanullah Jan
  Naeem Khan , Amanullah Jan , Ijaz Ahmad Khan , Muhammad Azim Khan and Ihsanullah
  An experiment was conducted at Agronomy Farm, NWFP Agricultural University, Peshawar during 1998-99 to study the response of wheat cultivars to varying seeding rates under rainfed conditions. The cultivars sown were Khattakwal, Suleman-96 and Tatara-96. Seed rates were 40, 80, 120 and 160 kg ha -1. The results revealed that the wheat planted at the rate of 160 kg ha -1 significantly produced highest grain yield 2733 kg ha -1 as compared to lower seeding rate. Similarly highest biological yield of 8466 kg ha -1 was recorded for highest seed rate (160 kg ha -1), and the lowest biomass yield of 5807 kg ha -1 for the lowest seed rate of 40 kg ha -1. Highest number of 215 spikes m -2 was for the highest seed rates and lowest of 113 spikes m -2 were for the lowest seed rate. Among the cultivars, Suleman-96 gave the highest grain yield (2708 kg ha -1) whereas Tatara-96 and Khattakwal produced 2500 and 1233 kg ha -1, respectively. Suleman-96 produced more number of grains/spike than Tatara-96 and Khattakwal. In addition, the 1000 grain weight of Suleman-96 was slightly more than Tatara-96 and Khattakwal i.e., 43, 42 and 31g respectively. Number of spikes m -2 were equal in case of Khattakwal and Tatara-96, whereas slightly less in Suleman-96 i.e., 163, 160 and 164 respectively. Khattakwal was highly susceptible to lodging as compared to Suleman-96 and Tatara-96. However, Suleman-96 had a higher number of loose smut attacks and the seeds should be treated with fungicides before sowing.
  Noorullah Khan , Amanullah Jan , Ihsanullah , Ijaz Ahmad Khan and Naeem Khan
  The research work was conducted to study the effect of nitrogen (0, 40, 80 and 120kg ha-1) and sulphur (0, 30, 60 and 90kg ha-1) on the yield and oil contents of canola variety Dunkled. Data were recorded on number of branch plant-1, pods plant-1, seeds pod-1, 1000 grain weight, grain yield (kg ha-1) and oil content. The effect of nitrogen was significant on all the parameters. Plots that received highest dose of N (120 kg ha-1) had maximum number of branches plant-1 (14), pods plant-1 (760), seeds pod-1 (28.04), thousand grain weight (3.15 g) and grain yield (2653 kg ha-1), while minimum oil content (42.1%). Different doses of sulphur had significantly increased number of branches plant-1 (12), pods plant-1 (582), grain yield (1683 kg ha-1) and oil content (44%), but had not significantly affected seeds pod-1 and 1000 grain weight. Grain yield was significantly higher at the highest levels of both the nutrients applied.
  Ihsanullah , Amanullah Jan , Fazal Hayat Taj , Ijaz Ahmad Khan and Naeem Khan
  All the parameters i.e., days to emergence, days to flowering, days to physiological maturity, number of pods per plant, number of seeds per pod, 100-seeds weight, biological yield, grain yield were significantly affected by sowing dates. Less days to emergence (6.6), less days to flowering (40) and less days to physiological maturity (75.7) were recorded. Biological yield was maximum for June 15 (6000 kg ha-1) followed by July 01(5439 kg ha-1). Number of pods per plant, number of seeds per pod, 100-seeds weight (g), grain yield (kg ha-1) got highest value of 30.2, 5.1, 4.26 and 825 respectively for July 01 sowing. Effect of the various mashbean varieties was significantly different for number of pods per plant, number of seeds per pod, biological yield and grain yield. Among these parameters highest number of pods per plant (20.6) for NARC Mash-1, higher number of seeds per pod (4.9) for NARC Mash-3, greatest biological yield (4400 kg ha-1) for NARC Mash-4 and more grain yield (557.1 kg ha-1) for NARC Mash-1. Interaction between varieties and sowing dates did not significantly affect any parameter. It may be concluded that July 01 sowing date and NARC Mash-1 variety appeared to be suitable for irrigated condition of Peshawar valley.
  Habib Akbar , Miftahullah , Muhammad Tariq Jan , Amanullah Jan and Ihsanullah
  Days to tasseling (55.43), days to silking (68.43), plant height (135.76 cm) and biological yield (11890.6 kg ha -1) was significantly increased at 180000 plants ha -1. Maximum 1000-grains weight (125.97 g) and more number of cobs plant -1 (1.61) was obtained at 60000 plants ha -1 while highest grain yield (1777.42 kg ha -1) was obtained at 120000 plants ha -1. Maximum days to tasseling (57.35), silking (69.50), maturity (102.7) and tallest plants (140.23 cm) were recorded for 200 kg N ha -1. Maximum number of plants (104185 ha -1) was harvested from plots receiving 150 kg N ha -1. Nitrogen level of 150 kg N ha -1 resulted in the greater grain yield (2006.95 kg ha -1) and 1000-grains weight (132.73g). Highest biological yield (12291.1 kg ha -1) was recorded for 200 kg N ha -1. Plant population of 120000 plants ha -1 interacting with 150 kg N ha -1 gave maximum grain yield of 2195.75 kg ha -1.
  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.
  Mohammad Tariq Jan , Haider Ali and Amanullah Jan
  Proper sowing method is important for crop establishment and mulching has a beneficial effect on soil physical properties. Keeping this in view, a study was carried out to evaluate the sowing methods and mulching effect on yield and yield components of wheat (Triticum aestivum L.). Two sowing methods and two mulching materials with no mulching treatments were used. Line sowing produced significantly higher yield components and grain yield. The harvest index and straw yield was also higher for line sowing than broadcast sowing. Mulching practice increased the spike population, while grains per spike and grain weight remained unaffected. Higher grain and straw yields were obtained with mulching. Line sowing and mulching with 4 t ha -1 of sorghum stover are recommended for optimum grain and straw yields of wheat.
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