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Articles by Abida Nasreen
Total Records ( 5 ) for Abida Nasreen
  Abida Nasreen , G.M. Cheema and M. Ashfaq
  Silkworm (Bombyx mori L.) larvae are commonly raised on leaves of mulberry (Morus alba). They can be reared successfully on leaves of peepal (Ficus religiosa), when fed after third instar. It was concluded that these larvae not only can consume and utilize the new food aptly but can also produce healthy cocoons as compared to those raised on mulberry and other alternate host plants.
  Abida Nasreen and Ghulam Mustafa
  Helicoverpa armigera (Hubner) (Lepidoptera: Noctuidae) completed its larval stage in 17.325±0.326 days passing through six instars under laboratory protocol, 26±1°C, 60-70% RH and 16 hours' daylight. The larvae moulted for 2nd instar, two days after hatching from eggs. Average stadiel periods for 2nd, 3rd, 4th, 5th and 6th instars were 2.07, 2.15, 2.48, 3.12, 3.55 and 3.95 days respectively. The last larval stage did not moult but was contracted and shortened into grub like pre-pupal stage. The average length measured for each instar (first to sixth) was 3.4, 4.6, 9.7, 17, 28.35, 36.85 mm respectively. The average pupal period was 13.2 days for female and 15.4 days for male. Fecundity of moths fed on sucrose solution was significantly higher than water fed females. The unfed females laid few eggs none was viable.
  Abida Nasreen , Ghulam Mustafa and Muhammad Ashfaq
  We tested some commercial insecticides in laboratory for contact toxicity to Chrysoperla carnea (Stephen) to evaluate potential compatibilities in integrated pest management programme. A standard deposit of 2 mg/cm2 of field recommended concentration of each insecticide viz. Abamectin, Bacillus thuringiensis, chlorfenapyr, endosulfan, indoxacarb, profenofos and spinosad were coated as inner lining of glass vials. The larvae of C. carnea at 2nd instar from the laboratory stocks were exposed to the insecticide deposits. All the concentrations were found safer (caused mortality < 50%) to the larvae tested except two, indoxacarb and profenofos (mortality caused > 90%) within 24 h. Mortalities of the test insects within 6 h of treatments were recorded 100% for profenofos and it was 65% for indoxicab. All the larvae in both indoxacarb and profenofos were dead recorded after 24 h. The both toxic insecticides were suggested for higher tire testing in semifield and field conditions.
  Ghulam Mustafa Cheema , Abida Nasreen and Muhammad Iqbal
  Parasitization rate by egg parasitoid, Trichogramma chilonis, was observed on artificially released eggs of Angoumois grain moth, Sitotroga cerealella, under field conditions on different cotton varieties viz., CIM-473, CIM-497, CIM-446, CIM-499, S-12, MNH-552, NIAB-78, NIAB-Krishma, BH-118, FH-900 and FH-901. Highest rate of parasitism (28%) was found on BH-118. It was followed by NIAB-Krishma (26.33%), FH-901 (25.00%), FH-900 (23.67%) and CIM-473 (22.00%). On CIM-497 and NIAB-78, 18 and 12% parasitization was observed. Lowest rate of parasitism (4.67%) was observed on CIM-499 followed by S-12 (5.33%), CIM-446 (6.67%) and MNH-552 (7.67%).
  Abida Nasreen , Ghulam Mustafa , Muhammad Iqbal and Muhammad Ashfaq
  Experiments were conducted under laboratory conditions to find out the most efficient method for harvesting the eggs of Chrysoperla carnea from the different substrates provided on the top of the adult rearing cage for egg laying purpose. Highest egg viability (82.89%) was found in the eggs removed by a razor from the granulated Maraco paper sheet used by AM-Tech rearing methodology whereas egg viability was lowest (64.89%) in the case of egg removed from black organdy with potassium hypochlorite solution. Modest egg viability (75.56%) was observed in the eggs laid on black organdy and removed by a razor.
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