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Articles by Manzoor Ahmad
Total Records ( 5 ) for Manzoor Ahmad
  Banaras H. Niazi , Izhar-ul-Haq , M. Salim and Manzoor Ahmad
  Field experiments were conducted on maize and wheat under normal soil conditions at Qalla, Charsadda and Tarnab, Peshawar irrigated with canal water to evaluate the effect of gypsum application on the efficiency of NPK fertilizers. Gypsum was applied @ 0, 500 and 1000 kg ha-1 with two levels of fertilizers i.e. recommended dose of NPK (120,90, 60 kg ha-1) and half dose (60, 45 and 30 kg ha-1) respectively. Maximum grain (3605 kg ha-1) and stalk (9922 kg ha-1) yield of maize was recorded at Qalla by the application of recommended dose of NPK with 1000 kg gypsum ha-1. The NPK with 500 kg gypsum ha-1 ranked second in this respect. Half dose of the NPK without any gypsum gave minimum grain (2248 kg ha-1) and stalk (3435 kg ha-1) yield. The yields were non- significantly different at Tarnab under the same treatment compared with that of Qalla. During the second year, the soil conditions improved and yield of grain (2883 kg ha-1) as well as stalk (15833 kg ha-1) was better at both sites. Wheat yield was non-significantly different at Tarnab. Uptake of different ions was variable. Uptake of P, K, Zn and Cu decreased while that of Mn and Fe increased during the second year. Maximum yield of maize grain (2883 kg ha-1) and stalk (15833 kg ha-1) with half dose and wheat grain (3605 kg ha-1) and stalk (12910 kg ha-1) was obtained by application of 1000 kg ha-1 gypsum with full dose of NPK.
  Bashir Ahmad , Qasim Jan , Shumaila Bashir , Muhammad Nisar , Farzana Shaheen and Manzoor Ahmad
  Crude methanolic extract of Chenopodium murale Linn. whole plant and its various fractions obtained in different solvent systems, was screened for different pharmacological and biological activities such as antifungal, antibacterial, insecticidal, phytotoxic and brine-shrimp cytotoxic activities. The extract and all the fractions exhibited well to excellent activities against different pathogens in antifungal bioassay and mild to moderate activities against different pathogens in antibacterial bioassay. While they did not display any significant insecticidal and brine-shrimp cytotoxic activities. Also the crude extract and its various fractions (except aqueous) showed remarkable phytotoxic activities against Lemna acquinoctialis welv. at highest concentration (1000 μg ml-1). However, they displayed weak phytotoxic activities at lower concentrations (100 μg ml-1, while at further lower concentration (10 μg ml-1) some of them rather promoted the growth of Lemna acquinoctialis welv. The aqueous fraction promoted the growth of Lemna acquinoctialis welv. at all tested concentrations.
  Manzoor Ahmad and S. Hassan Raza Zaidi
  Wheat is the single largest staple food crop of Pakistan. But it is the irony of fate that average yield per hectare of Wheat is very low in Pakistan as compared to other countries. There are many physiological and agronomic factors responsible for this menace. Among these the most important are inadequate and unbalanced application of fertilizer and manure, poor crop management practices bad quality of soil, irrigation deficiency at critical stages, lack of usage of HYVs, high weed intensity in the fields etc. This study was conducted, using the primary data, in order to undertake the economic analysis of the different factors on the farm based categories: small, medium, large and the productivity based categories: low, medium, high. In the economic analysis gross margins, marginal costs and marginal rates of returns were evaluated from the primary data collected from district Faisalabad.
  Waqar Ahmad , Bashir Ahmad , Manzoor Ahmad , Zafar Iqbal , Muhammad Nisar and Mansoor Ahmad
  The 80% methanolic extract of Myricaria elegans Royle was investigated for in vitro acetylcholinesterase (ACHE), butyrylcholinesterase (BCHE) and lipoxygenase enzyme inhibition activities. The crude extract was found to have significant acetylcholinesterase inhibitory activity (74.8%) and remarkable butryrylcholinesterase inhibitory activity (96.0%). However, no activity was observed against the enzyme lipoxygenase (0.0%).
  M.A. Pervez , Faqir Muhammad and Manzoor Ahmad
  These studies were carried out to find the effect of deblossoming of summer crop on the succeeding winter crop. It has been observed that deblossoming at full bloom stage showed promising results to increase the number of flowers, fruit set percentage, size, weight and yield of fruit and to decrease the flower and fruit drop. Time taken for flower bud opening and fruit maturity was also reduced thus an early winter crop was obtained. Deblossoming at unopened bud stage and fruit thinning at different intervals after fruit setting also showed better results than control. Fruit thinning at later stages after fruit setting, had decreasing affect on yield.
 
 
 
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