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Articles by Maqbool Akhtar
Total Records ( 5 ) for Maqbool Akhtar
  M. E. Akhtar , M. Zameer Khan , Sagheer Ahmad and Maqbool Akhtar
  Response of dryland wheat to nitrogen, phosphorus and potash fertilizer application in different combinations was studied to assess a suitable dose for maximum economic yield. Maximum response in terms of grain yield was found to N followed by P and K application, on overall basis. On the basis of two years results, application of each kg of N (in the presence of P and K) increased 7.78 kg grain at the highest rate. In case of P and K, each kg of P2O5 and K2O (in the presence of other two nutrients) gave an average increase in yield of 6.65 and 4.36 kg, respectively. Application of 100 kg N ha -1 along with 60 kg P2O5 and 150 kg K2O ha -1 produced the maximum grain and straw yield.
  M. Ehsan Akhtar , Aneela Sardar , M. Ashraf , Maqbool Akhtar and M. Zameer Khan
  A pot experiment was conduced in a glasshouse at the National Agricultural Research Centre (NARC), Islamabad to study the effect of application potash on boll weight, boll size and seed cotton yield in selected cotton varieties, namely CIM-443, CIM-109 and CIM-446 during summer 1999. Potash as MOP was applied @ 0, 100 and 200 kg K2O ha-1 along with basal application of N and P @ 150 and 75 kg P2O5 ha-1. The results showed that boll weight and size increased significantly with increasing K2O levels of application and they were maximum at 200 kg K2O ha-1. However, no significant difference was observed in the boll size of different varieties. Seed cotton yield also increased significantly in all the varieties with increasing K2O. The magnitude of response was variable and maximum response was observed in case of CIM-446 followed by CIM-109 and CIM-443.
  Maqbool Akhtar , M. Ehsan Akhtar , Khurram Bashir and Shahid Rafiq Ch
  A field experiment was conducted to study the effect of various nitrogen levels (0, 75, 150 and 225 kg ha-1 ) on agronomic characters, productivity, maturity and nutrient contents of sugarcane at the National Agricultural Research Centre Islamabad during 1996-98. All the treatments were given a constant dose of 120 kg ha‾1 of P2O5 and 150 kg ha‾1 of K2O. Early stalk population increased as the N dose was increased. Maximum number of tillers per hectare were found at 225 kg N ha‾1 at all growth stages. Similarly at harvest, millable canes per hectare were the maximum (139.7 thousands) at 225 kg N ha‾1. Stalk height increased significantly as the N levels were increased and it was the maximum (264.67 cm) at N level of 225 kg ha‾1. Nitrogen also increased stalk girth significantly. Brix percentage was similar at early maturity stages at all N levels, however, at harvest it was significantly lower in N applied plots than the control. Cane yield increased significantly with increasing N levels with the maximum (149.4 t ha‾1) at 225 kg N ha‾1. Although sugar recovery was maximum (11.8 %) in the control plots but it was statistically similar to other treatments. Application of 225 kg N ha-1 produced the maximum sugar yield of 16.87 t ha‾1. Phosphorus, K, Zn, Mg and B contents in the plant tissue increased significantly with increasing N application levels.
  Maqbool Akhtar , Nosheen Noor Elahi and M. Ashraf
  Six exotic sugarcane varieties were evaluated for their agronomic characters and productivity. All exotic sugarcane varieties had similar germination percentage except standard variety CP77-400 which had higher germination. Significant differences were found in number of tillers ha -1, stalk height, girth and total soluble solids. Minimum (102.3 thousands ha -1) number of millable canes were found in variety CP84-1198 and the maximum (160 thousands ha -1) in CP85-1491. Cane yield ranged from the minimum of 70.67 t ha -1 in variety CP84-1198 to the maximum of 131.3 t ha -1 in variety TCP86-3368. Sugar recovery was maximum (13.78 %) in variety CP85-1491 and minimum (11.82%) in the variety TCP86-3368. Sugarcane variety CP84-1198 produced the minimum (9.26 t ha -1) sugar yield. Purity of juice was also significantly different in most of the varieties. All the varieties except CP 84-1198 had better cane and sugar yield potentials than the standard variety.
  Maqbool Akhtar , Nosheen Noor Elahi and M. Ashraf
  Six exotic varieties of sugarcane (CP84-1198, CP85-1491, CP88-1165, CP77-400, CP89-846, TCP86-3368) planted at the National Agricultural Research Centre during 1998-99 were described for their morphological characters. All the varieties greatly varied in different characters. Mean leaf length, number of green leaves and width of leaf lamina/blade was different in different varieties. These varieties also differed in leaf sheath colour, carriage, and other leaf characters. Shape of the dewlap, its size and colour, shape of ligule and ligular process or auricle was also different. All the varieties varied in diameter of the stalks, colour of the stalks, shape of internode, bud groove characters, width and colour of growth ring, width and colour of root zone and wax band characters. Ivory markings were present on stalks of all the varieties. All the varieties were similar in bud size, but different in shapes of the bud, some having flanges and some without flanges. Position of the germ pore on the bud was also different in all the varieties.
 
 
 
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