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Articles by Z. Shah
Total Records ( 1 ) for Z. Shah
  M. Tariq , M. Sharif , Z. Shah and R. Khan
  An experiment was designed to study the effect of foliar application of micronutrients on the yield, quality and leaf composition of sweet orange, Blood red variety at Shabazgari, Mardan. The experiment was laid out in a randomized complete block design in 23 factorial arrangement. Zinc, manganese and boron were applied as foliar spray at the rate of 0.4, 0.2 and 0.04 kg ha-1, respectively in the presence of 1.56 kg N ha-1 as urea and 0.4 kg surfactance ha-1 (as wetting agent) in 400 L of water. The maximum fruit yield was obtained, when 0.4 kg Zn ha-1 and 0.2 kg Mn ha-1 was sprayed along with 1.56 kg N ha-1 and 0.4 kg surfactance ha-1 in 400 L of water. The minimum % peel was obtained with B alone and minimum % rag with Zn + Mn, maximum fruit size with Zn + B and maximum fruit volume with Zn + Mn. Similarly, % juice in sweet oranges was increased significantly by B alone, reducing sugar by Mn alone and vitamin C contents by Zn + B through foliar spray, suggested that each micronutrient had different role on the quality of citrus fruit. Foliar spray of Zn, Mn and B along with urea significantly increased the concentration of Zn and Mn in citrus leaves, while the concentration of B was not affected with foliar spray, perhaps due to dilution within the citrus tissues. Therefore, it is suggested that either Zn+Mn or Zn+B may be applied as foliar spray in combination with urea and surfactance for getting the maximum yield and improved quality of citrus fruit under prevailing conditions.
 
 
 
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