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Articles by Sajid Mahmood Nadeem
Total Records ( 2 ) for Sajid Mahmood Nadeem
  Safdar Hussain , Muhammad Ahmad , Saeed Ahmad , Javaid Iqbal , Muhammad Nasir Subhani , Sajid Mahmood Nadeem , Sagheer Atta and Muhammad Ibrahim
  A field experiment was carried out at the Research area, College of Agriculture, Dera Ghazi Khan to measure the response of spring sowing sunflower to foliar application of abscisic acid (ABA) and potassium chloride under drought. In the experiment four irrigations by flooding (25 days after sowing, at bud initiation, at anthesis and at achene formation stage) were applied in control. Foliar application of 2μM ABA and 1% KCl was made at anthesis stage of sunflower hybrids (NK-265 and SF-187) after skipping the irrigation. Foliar application of 2μM ABA and 1% solution of KCl under drought at anthesis stage significantly increased achene yield and oil yield over skipping irrigation with no ABA and no KCl at anthesis stage. Sunflower hybrid NK-265 showed better drought tolerance compared with SF-187 with foliar application of ABA as well as KCl because it showed improvement in growth and yield. Sunflower hybrids NK-265 had significantly increased achene yield and oil yield than SF-187. Drought stress at anthesis stage to sunflower hybrids showed decrease in agronomic parameters and foliar application of ABA as well as KCl under water deficits improved them. ABA as well as KCl application to sunflower hybrids at anthesis under drought improved achene oil content but decreased achene protein content. Exogenous application of ABA or KCl to NK-265 under drought showed more percent increased in achene yield and oil yield than SF-187 over no ABA and no KCl application. Foliar application of ABA as well as KCl on leaf score at anthesis stage was non-significant. It is, therefore, suggested that foliar application of 2μM ABA and 1% solution of KCl under drought at anthesis stage significantly increased achene yield and oil yield over skipping irrigation, no ABA and no KCl at anthesis stage. Sunflower hybrid NK-265 showed better improvement of drought tolerance by foliar application of ABA as well as KCl than SF-187 because it showed more improvement in growth and yield.
  Safdar Hussain , M. Farrukh Saleem , Javaid Iqbal , Sajid Mahmood Nadeem , Muhammad Ahmad and Muhammad Ibrahim
  Profitability assessment has prime importance for every crop husbandry practice and cultural operation. For this purpose, two field experiment was carried out to investigate the response of spring planted sunflower hybrids to different irrigation levels/schedules and foliar application of abscisic acid. Two studies were done at the Agronomic Research Farm, University of Agriculture, Faisalabad, Pakistan. In first study, three irrigation schedules viz. four irrigations (25 DAS, bud initiation, flower initiation and achene formation), three irrigations (25 DAS, flower initiation and achene formation) and three irrigations (25 DAS, bud initiation and achene formation) were used. Sunflower hybrid Hysun-33 was subjected to exogenous application of different concentrations (0, 5μm and 10μm) of ABA at bud initiation or at flower initiation. In second study, Three sunflower hybrids viz. DK-4040 (large stature), S-278 (medium stature) and SF-187 (short stature) were subjected to different irrigation regimes and ABA applications i.e., four irrigations; 25 Days after Sowing (DAS), at bud initiation, flower initiation and achene formation and with no ABA spray, three irrigations; 25 Days after Sowing (DAS), at flower initiation and achene formation and with no ABA spray, three irrigations; 25 Days after Sowing (DAS), at flower initiation and achene formation and with ABA spray at bud initiation, three irrigations; 25 Days after Sowing (DAS), at bud initiation and achene formation and with no ABA spray, three irrigations; (25 Days after Sowing (DAS), at bud initiation and achene formation and with ABA spray at flower initiation. In first study, It was observed that three irrigations (25 DAS, at flower initiation and at achene formation), when 5μM ABA was applied at bud initiation under drought resulted in more profitable as compared to exogenous application of same concentration of ABA at flower initiation. So, it is suggested that three irrigations (25 DAS, at flower initiation and at achene formation), with foliar spray of 5μM ABA should be applied at bud initiation under drought. In second study, the dominance and marginal analysis about sunflower hybrids revealed that maximum Marginal Rate of Return (MRR) in sunflower hybrids was observed in T1 (control). Drought stress at bud initiation or at flower initiation reduced marginal rate of return. ABA application to DK-4040 under drought at bud initiation showed more increase in MRR than SF-187 and S-278.
 
 
 
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