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Articles by M. Ibrahim
Total Records ( 7 ) for M. Ibrahim
  F.M. Tahir , M. Ibrahim and Kamran Hamid
  The present project was initiated to find out level of various nutrient elements in leaves at various growing stages. It was noticed that leaves of bearing terminals showed less concentrations of nutrients at stage one (0.956% N, 0.057% P, 0.918% Ca) which gradually increased from stage 2nd (0.981% N, 0.062% P, 1.131% Ca) to stage three (1.626% N, 0.182% P, 2.482% Ca) with minor variation in case of K, Mg and Fe. In case of non-bearing terminals, highest level of nutrients was found at stage one (1.589% N, 0.203% P, 0.839% Mg) with a gradual decrease up to stage three (0.902% N, 0.063% P, 0.197% Mg) with minor variation in K and Cu. In Fe, sugars and starch, a reverse pattern was observed. Zn and Mn showed no variation from first to third stage.
  F.M. Tahir , M. Ibrahim and Kamran Hamid
  Present research studies were carried out to find the effect of artificial drought stress on the emergence of vegetative flushes in the same season and production of normal or malformed panicles in the next blooming season. It has been found that drought stress caused a great reduction in the emergence of vegetative flushes during the stress period. Number of leaves per flush, flush length and weight, leaf water contents and root growth was also reduced due to drought stress. Number of malformed panicles and percentage of malformation was minimized in the plants on which drought stress was imposed. Complete drought stress proved better to reduce the intensity of malformation than partial drought stress.
  M. Ibrahim , M. K. Munira , M. S. Kabir , A. K. M. S. Islam and M. M. U. Miah
  Eight wild Solanum namely, S. sisymbriifolium, S. torvum, S. sanitwongsei, S. indicum, S. integrifolium, S. khasianum, S. surattense, S. insanum and three Solanum amphidiploids of S. melongena "Uttara" x S. integrifolium, S. melongena "Dingaras Multiple Purple" (DMP) x S. integrifolium and S. integrifolium x S. melongena "Uttara" were tested using GA3 pretreatment for their seed dormancy and seed germination rate along with their potentiality as rootstock of tomato at Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh. Influence of GA3 treatment for germinating seed in most of the wild Solanum was not found effective except S. sanitwongsei, S. surattense and S. integrifolium. Among the rootstocks, S. sisymbriifolium performed better for yield and yield contributing characters in tomato that those of other wild relatives, their amphidiploids, and non-grafted plants.
  F.M. Tahir , M. Ibrahim and Kamran Hamid
  The study was initiated to observe the effect of three growth retardants i.e. paclobutrazol, alar and cycocel on vegetative growth pattern and its impact on reproductive behaviour towards normal or malformed panicles. As a result of growth retardants spray, vegetative growth was reduced and thus intensity of flushing was minimized on treated plants after application. Out of three growth retardants, paclobutrazal was found more effective in which least number of growth flushes were observed. As a result of decreased number of flushes, the production of malformed panicles was also minimized.
  M.H. Morshed , M. Shamim Hossain , M. Ibrahim , M.Z. Shafique , M.O.H. Helali , A. Samad , M.S. Islam and M.A. Islam
  The aim of the present study was to evaluate the antibacterial characteristic of the four synthetic plant hormones Indoleacetic acid (IAA), 2,4- dichlorophenoxyacetic acid (2,4-D), Naphthaleneacetic acid (NAA) and Gibberellic acid (GA). Antibacterial potency was assessed by measuring the zone of inhibitions on semi-solid nutrient agar bacterial inoculating petri dishes. NAA and IAA gave potent antibacterial activity at concentration of 150 μg disc-1 giving zones at 26-35 mm. Bacteriostatic and bactericidal concentrations against the pathogens were determined by serial dilution technique. Bacteriocidal concentrations of the tested principles were found to be significantly higher than their respective bacteriostatic concentrations. Minimum inhibitory concentrations that are bacteriostatic concentrations of the tested compounds were found at 32-128 μg mL-1 whereas, bactericidal concentrations established at 256-512 μg mL-1 against eight pathogenic bacteria Streptococcus -haemolyticus, Staphylococcus aureus, Pseudomonas aeroginosa, Shigella dysenteriae, Shigella flexneri, E. coli, Salmonella typhi and Klebsiella pneumoniae.
  M.M. Rashid , M.Z. Alam , M. Mofazzel Hossain , M. Ibrahim and M.H. Kabir
  The present study was carried out to investigate indirect damage of guava leaf in the form of wax and honeydew covering by the spiraling whitefly (Aleurodicus dispersus) was investigated in a guava orchard, Mymensingh, Bangladesh. Extent of leaf damage in twigs of different strata indicated that the upper most twigs had minimum wax and honeydew-covered leaves than the other twigs of guava plants. The results of the study on variation of leaf damage in different leaf position of twig showed that at early attacking stage the mean percentage of wax and honeydew covered leaves, was significantly higher in upper leaf position than in the middle and the lower leaf position and had the lowest level of whitefly infestation in the lower leaf position of the guava twigs. Results showed that with the build up of population in the month of December and January, wax and honeydew covered leaves were more in middle leaf position. The lower wax and honeydew covering in upper position were recorded in the later months due to rain and rapid growth of new flush, which remained non-infested.
  M. S. Islam , M. Ibrahim , M. A. Rahman , M. A. Uddin and S. K. Biswas
  A study was carried out on six litchi varieties, for their fruit characteristics, bio-chemical composition and storage behaviour. The results showed significant difference among varieties. The fruit weight ranged from 14.36-23.97 g, percent recovery of flesh 60.58 - 71.16, TSS 16.78-19.55% and total sugar 10.0-19.2%. Rottage loss was highest in Green (81.86%) and the lowest in China-3 (37.03%). None of the varieties was found superior in all respect. However, considering the important characteristics, the fruits of BARI litchi-1 and China-3 were considered highly acceptable.
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