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Articles by Muhammad Amjad
Total Records ( 9 ) for Muhammad Amjad
  Muhammad Amjad , Muhammad Akbar Anjum and Nadeem Akhtar
  Phosphorus (0, 23, 46 or 69 kg P2O5 ha-1) and potassium (0, 50, 100 or 150 kg K2O ha-1) were applied in various combinations to pea crop at the time of seed bed preparation. Nitrogen dose (46 kg N ha-1) was kept constant and applied in two split doses, i.e. half at the time of sowing while the other half was applied before flowering. Seed yield, 1000 seed weight and percentage of large sized seeds (<6.25 mm in dia.) increased significantly with increasing level of P2O5. However, time taken to complete 50% germination and electrical conductivity of seed leachates decreased significantly. Application of K2O to the crop had significant positive influence on seed yield, 1000 seed weight and percentage of large sized seeds up to the dose of 100 kg ha-1. Time taken to complete 50% germination and electrical conductivity of seed leachates were also affected significantly being minimum at the dose of 100 kg K2O ha-1. Application of P2O5 and K2O to the crop had no significant effect on seed germination percentage.
  Muhammad Amjad , Muhammad Afzal and Khalid Mehmood
  Experiment was laid out for evaluating some new synthetic and bio-insecticides viz., Imicon 25WP + Neem seed kernel extract (imidacloprid + Azadirachta indica A. Juss.), Agree 50WP (Bacillus thuringiensis), Pride 25WP (buprofezin), Taofos 25EC (quinalphos), and Digital 20EC (fenpropathrin) against maize borer Chilo partellus Swinhoe. All the test insecticides were found to have significant effect on borer infestation, but lower per cent infestation (15.55%) of maize borer with Taofos 25EC (quinalphos) @ 1000 ml/ac would suggest this insecticide to be more toxic to the pest compared with the others.
  Muhammad Amjad , Muhammad Akbar Anjum and Habib Ullah Malik
  N (0, 25, 50 or 75 kg ha–1) and P2O5 (0, 15, 30 or 46 kg ha–1) were applied in different combinations to onion cultivars Dark Red, Early Red and Faisal Red. All the P and half of the N were applied at the time of sowing while the rest of N was applied as a top dressing at flowering. Number of flowers per umbel significantly varied among the cultivars and was highest in Faisal Red (667), while the cultivars did not differ significantly in time taken to flowering, number of flower stalks per plant, diameter of umbel and seed yield. Fertilizer doses had significant effect on diameter of umbel, number of flowers pe umbel and seed yield, while time taken to flowering and number of flower stalks per plant have no significant response to these particular doses of fertilizer, Interaction between cultivars and fertilizers doses was only significant for number of flower stalks per plant. Maximum number of flower stalks were produced in cv. Faisal Red at a fertilizer dose of 75 kgN+45 kg P20, ha–1.
  Said Mir Khan and Muhammad Amjad
  The results reveal that sarhad white was found the least susceptible on the basis of number of dead hearts and percent infestation compare to the other three tested varieties.
Sarhad white variety was also found significantly better than Kisan, Pirsabak experimental variety No. 1 and Pirsabak experimental variety No. 4 on the basis of average plant height, weight of stalk (kg/plot), average number of cobs/plant, weight of cobs (kg/plot) and weight of grains (kg/plot).
  Said Mir Khan and Muhammad Amjad
  The results of chemical control of maize stem borer Chilo partellus Swin. revealed that Furadan 3G proved significantly more effective in the reduction of percent dead hearts, pest infestation and in increase of stalk and cobs weight, average number of cobs/plant and grain yield followed by Ripcord 100 g/l EC and Tamaron SL 600. High dose of all the three insecticides gave better control of maize stem borer than medium and low doses. However, medium and low doses of insecticides were also found significantly better compared to the check.
  Muhammad Naeem Safdar , Khalid Naseem , Nouman Siddiqui , Muhammad Amjad , Tabassum Hameed and Samina Khalil
  Seven wheat varieties i.e. Inqulab 91, Bhakkar 2002, AS 2002, Shafaq 2006, Sehar 2006, Auqab 2000 and GA 2002 collected from different locations of Punjab were subjected to physicochemical, rheological and sensory analysis to determine their suitability for chapatti preparation during 2006-2008. The quality parameters studied were test weight, 1000 kernel weight, foreign matter, broken/shrunken, damaged grains, moisture, ash, protein, wet and dry gluten, falling number and farinographic properties. Chapattis were prepared from whole-wheat flours and evaluated for colour, taste, flavor, texture, chewing ability, folding ability and overall acceptability. Shafaq 2006 had the maximum test weight (81 kg/hl) thousand kernel weight (41.50 g) and minimum non-edible foreign matter (0.24%), moisture (9.11%) and protein (11.53%) Auqab 2000 had the highest other damaged grains (0.79%), lowest falling number (374) and tolerance index (25 BU) whereas Sehar-2006 had the highest protein (12.78%), wet gluten (29.59%), dry gluten (10.20%), dough development time (5.50 min) and lowest edible foreign matter (0.37%), broken/shrunken grains (0.70%) and softening of dough (43.33 BU). Chapattis prepared from AS 2002 were ranked highest and more acceptable than others. The comparison of studied quality parameters of wheat varieties with Pakistan standard specifications revealed good quality wheat.
  Muhammad Amjad , Muhammad Naeem Safdar , Amer Mumtaz , Khalid Naseem , Saeeda Raza and Samina Khalil
  Seven wheat varieties i.e. Inqulab 91, Bhakkar 2002, AS 2002, Shafaq 2006, Sehar 2006, Auqab 2000 and GA 2002 collected from different locations of Punjab were subjected to physicochemical, rheological, minerals (copper, manganese, iron, zinc) and sensory analyses to determine their suitability for leavened flat bread (naan) preparation. Naans were prepared from different wheat flours and evaluated for colour, taste, flavor, texture, chewing ability, folding ability and overall acceptability. It was observed that Shafaq 2006 had the highest test weight (81.50 kg/hl), thousand kernel weight (41.20 g), zinc (8.50 mg kg-1) and lowest broken/shrunken grains (0.79%), insect damaged grains (0.45%), moisture (12.92%) and dough stability (4.11%), Bhakkar 2002 had the maximum broken / shrunken grains (1.61%), ash (0.61%), falling number (432) and minimum water absorption (54.05%), dough development time (2.21 min) and manganese (5.29 mg kg-1), whereas Sehar-2006 had the highest protein (10.84%), wet gluten (27.56%), dry gluten (9.35%), dough development time (4.12 min), copper (4.68 mg kg-1) and lowest edible foreign matter (0.42%), tolerance index (35.00 BU) and iron (14.80 mg kg-1). Naans prepared from Auqab 2000 were ranked highest and more acceptable than others.
  Muhammad Naeem Safdar , Amer Mumtaz , Muhammad Amjad , Nouman Siddiqui and Tabassum Hameed
  A comparative study was done to determine the most suitable storage temperature for tomato paste at which there would be minimum damage to the product quality. Tomato paste samples were prepared, 0.1% sodium benzoate preservative added, stored at 25oC, 6oC and -10oC and were analyzed for chemical parameters as well as subjected to sensory evaluation at 30 days storage intervals till 240 days. A gradual increase in Total Soluble Solids (TSS) and acidity was observed during storage whereas pH and ascorbic acid were decreased. These changes were more pronounced at 25oC than at 6oC and -10oC. Results of sensory evaluation revealed that samples stored at lower temperatures such as 6oC and -10oC remained acceptable after 240 days storage. However, samples were rejected organoleptically at higher temperature storage i.e. 25oC.
  Muhammad Naeem Safdar , Amer Mumtaz , Tabassum Hameed , Nouman Siddiqui , Samina Khalil and Muhammad Amjad
  Six mango varieties i.e. Chaunsa, Dusehri, Langra, Anwar Ratol, Malda and Fajri were subjected to physicochemical analysis to assess their suitability for jam preparation Storage stability of jam from selected mango varieties (Chaunsa, Dusehri and Anwar Ratol) was also investigated at ambient temperature (25±3°C) and relative humidity 60±6%. Fajri mango had the highest pulp content (77.62%) while Anwar Ratol pulp had the highest total soluble solids (21.9 °Brix), brix/acid ratio (43.80), reducing sugars (5.03%) and total sugars (18.20%). Mango jams were prepared and analyzed for physicochemical, microbial and sensory parameters at 30 days storage interval for 150 days. Anwar Ratol jam had the highest total soluble solids (68.20°Brix), brix/acid ratio (101.79), reducing sugars (19.88%) and total sugars (60.14%) whereas Chaunsa jam had the highest acidity (0.71%) and lowest pH (3.52). No detectable yeast and mold and negligible total viable count were observed in all mango jam samples during 150 days storage period. Sensory evaluation results revealed that Dusehri jam was ranked highest and more acceptable than others. However, all mango jams remained organoleptically acceptable after 150 days storage.
 
 
 
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