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Articles by M. Tariq
Total Records ( 5 ) for M. Tariq
  M. Tariq and C.J.B. Mott
  The present study was based on the hypothesis that B has a retarding influence on the accumulation of anions in plants. A study was carried out to assess the influence of B on the concentration and uptake of anions in radish (cv. French breakfast) crop, using sand culture technique, under green house conditions. The experiment was laid out in a randomized complete block design and replicated three times. Boron was applied at the rate of 0, 0.25, 0.50, 1.0, 2.0, 3.0 and 5.0 mg B L-1 as H3BO3 along with a basal dose of modified complete nutrient solution based on the Long Ashton Formula. Results revealed that significant treatment effects were found on the growth response of radish plants and maximum yield was recorded at 0.5 mg L-1 of added B. Toxic effects accompanied by considerable yield decreases was observed at higher levels of B supply. The concentration of P and B in plants were increased, S decreased and N remain unchanged. While, the total uptake of all anions except B significantly decreased with increasing levels of B in the nutrient solution and showed close similarity to the growth response of radish plants, suggesting that total uptake of anions was useful but alternative way of estimating the nutrient behavior with regard to B supply. Generally, low and high levels of added B had detrimental effects on the concentration and total uptake of anions in radish plants. The present study suggests that B supply had specific effects with respect to different anions.
  A.J. Khan , F. Azam , A. Ali , M. Tariq and M. Amin
  Ten elite wheat breeding lines were evaluated for yield and yield components under rainfed conditions at Peshawar. Genotypic and phenotypic associations between the characters and their direct and indirect effects on grain yield were analyzed. Plant height showed positive correlation only with spikelets per spike and was negatively correlated with the other studied characters. Positive correlation of tillers per plant was observed with all the traits except spikelets per spike. Spike length was found to be positively correlated with spikelets per spike and grain yield and negatively so with 1000-grain weight. Significantly negative correlation of spikelets per spike was observed with 1000 grain weight and grain yield. Correlation coefficient between 1000-grain weight and grain yield ha-1 was positive and significant. Overall tillers per plant, spike length and 1000-grain weight showed significant positive correlation with grain yield while plant height and spikelets per spike were negative and significantly (p<0.05) correlated with grain yield. Path analysis indicated that tillers per plant had the highest positive direct effect on grain yield followed by spikelets per spike and 1000-grain weight, whereas plant height and spike length had negative direct effect on this parameter.
  M. Tariq and C.J.B. Mott
  The concentration of boron in soils and plants not only varies with soil type, plant species and environmental conditions, but also its excess or deficiency may affect the plant growth and production. Because, there is a small concentration range between deficiency and toxicity in soil-plant systems. In the present study, the importance of boron in plant nutrition, its chemistry in soils, its physiological and biochemical role in plants and its relation to environment is reviewed and discussed.
  M. Zulqurnain , M. Tariq and Fouzia. S .Rehmani
  In iron overload condition a drug desferioxamine mesylate has been used. It is linear trihydroxamic acid, a natural siderophore produced nocardia and streptomyces. The complex formation of Cr+3 and Fe+3 with salicylhydroxamic were studied potentiometrically at different temperatures. The data were subjected to computer program "BEST". The stability constant values and thermodynamic stabilities were calculated. It was found that salicylhydroxamate forms 1:1 complex at pH 3 and 1: 2 complex at pH 4 with Cr+3. The stability constant and thermodynamic abilities are close to Fe+3 salicyl hydroxamate complexes.
  M. Tahir , M. Tariq , H.T. Mahmood and S. Hussain
  Trails were conducted during 2003-04 on planting dates from May 1st to July 1st at 15 days intervals with three commercial varieties of cotton i.e. CIM-496, CIM-497 and CIM-506. Maximum CLCuV percentage was recorded in June 1st planting. It was found that CLCuV percentage rapidly increase in the first week of August in all the planting dates. It was also concluded that planting of cotton should be done in May 1st to June 1st to avoid the percentage losses of CLCuV. CLCuV effects were higher in variety CIM-497 in the June 15th planting whereas variety CIM-506 showed low attack, when compared with other varieties.
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