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Articles by A.T.M. Rafiqul Hoque
Total Records ( 2 ) for A.T.M. Rafiqul Hoque
  A.T.M. Rafiqul Hoque , M.B. Uddin , R. Ahmed and M.K. Hossain
  The paper presents the suppressive effect of different concentration of aqueous leaf extracts of Neem (Azadirachta indica) on some agricultural crops e.g. Cicer arietinum L., Brassica juncea (L.) Czern and Coss; Cucumis sativus L.; Phaseolus mungo L.; Raphanus sativus L.; and Vigna unguiculata (L.) Walp. The experiment was conducted in sterilized petridishes with a photoperiod of 24 hours on an average temperature of 29.50C. The result showed that aqueous leaf extract of Azadirachta indica caused significant inhibitory effect on germination, root and shoot elongation and development of lateral roots of receptor plants. The effect was proportional to the concentrations of the extracts and higher concentration had the stronger inhibitory effect whereas in some cases the lower concentration showed stimulatory effect. The study also revealed that inhibitory effect was much pronounced in root and lateral root development rather than shoot and germination.
  A.T.M. Rafiqul Hoque , M.K. Hossain , M. Mohiuddin and M.M. Hoque
  The study describes the effect of 2 (two) commonly used inorganic fertilizers (Urea and TSP) on Anthocephalus chinensis (Lam.) Rich ex. walp. seedlings in the nursery of the Institute of Forestry and Environmental Sciences, University of Chittagong, Bangladesh with a view to standardize an optimum dose of inorganic fertilizers for raising quality seedlings. There were combinations of 16 treatments including a control one (NoPo). Seedlings were supplied 0, 75,175, 300 kg ha -1 of N and P of each in solution form in all possible combinations. Seedlings were evaluated for 13 weeks (90 days) in the nursery. Seedling mortality along with different growth parameters was measured. Different growth variables were also calculated. Seedling growth was in general markedly better for fertilized one in comparison to the control one. Nitrogen addition was found significantly promoting the collar dia. increment and total dry matter production of seedlings. Seedling mortality was observed as the nitrogen dose increases. Significant variation was not observed for different growth variables due to nitrogen doses. However, there was no significant variation in any parameters for different levels of phosphorus applied. The study suggests that application of 175 kg N ha -1 may be beneficial and also addition of 175 kg P ha -1 may boost the diameter, total dry matter production and leaf area of Anthocephalus chinensis on this type of soil (forest top soil collected from Chittagong University Campus).
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