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Articles by I. Hossain
Total Records ( 6 ) for I. Hossain
  M. M. Hossain and I. Hossain
  Seed samples having different levels of black pointed seed were used in this study. Lowest leaf spot severity (3.36) was found in plots where best seed was sown in the field. Increased number of black pointed seed in the seed sample resulted in formation of higher number of seeds having black point infection in the field. Highest number (82.13 %) of grade-0 (apparently healthy) seeds were obtained from the plots where best seed was used. Formation of black pointed free grain in the field did not differ significantly up to seed sample containing 10 % black pointed seed. Laboratory test revealed that seeds of grade-5 yielded 74.55 % higher incidence of Bipolaris sorokiniana over seeds of grade-0. Incidence of Fusarium also increased with increase in black point infection but incidence of Alternaria tenuis and Curvularia lunata did not show any specific relation with severity of black point infection in grain. Higher incidence of B. sorokiniana was yielded from the embryo end of both seeds of grade-0 (25.30 %) and grade-1 (2.50 %) than the endosperm.
  S.M.A. Islam , I. Hossain , G.A. Fakir and M. Asad-Ud-Doullah
  Effects of physical seed sorting, seed treatment with garlic extract (1:2) and Vitavax 200 (0.4%) were investigated for controlling seed borne fungal flora and seed yield of jute (Corchorus capsularis L.). Seed health test of jute revealed that farmer`s saved seed (control) yielded all together 13 different fungi of 11 genera. Prevalence of Colletotrichum corchori, Macrophomina phaseolina, Botryodiplodia theobromae, Fusarium spp., Penicillium spp., Aspergillus niger and A. flavus were by 4.25, 10.75, 2.00, 4.25, 27.20, 8.00 and 22.50%, respectively. Septonema secedens Corda. was recorded as seed borne for the first time in jute. Garlic extract and Vitavax 200 increased the yield of jute by 47.38% and 46.05%, respectively over farmer`s saved seed (control) when grown in the net house. Under field conditions seed treatment with garlic extract and Vitavax 200 increased seed yield by 77.50 and 82.50%, respectively over farmer`s saved seed.
  M.A.K.S. Siddique , A.Q.M. Bazlur Rashid , I. Hossain , K. M. Khalequzzaman and Md. Kalim Uddin
  Reaction of five wheat varieties to Bipolaris sorokiniana and Fusarium moniliforme was assessed in terms of prevalence of the pathogen on the seeds, symptom severity on the growing plants and effects of the pathogens on the yields. Prevalence of B. sorokiniana was 4-4.25% in kanchan and Akbar and of Fusarium monilifome was 2.25-2.75% in Gourab and Kanchan. Disease severity was the highest in Barkat both in laboratory and field conditions. However, Bipolaris sorokiniana infection was more severe than that of Fusarium moniliforme. Percent diseased grains were high in Barkat, while grain yield was low in barkat and sonalika due to inoculation of B. sorokiniana and F. moniliforme. Thus, there was a significant variation in reaction among the wheat varieties to the pathogens.
  F. Ahmed , I. Hossain and F.M. Aminuzzaman
  A total of representatives eleven isolates of six different pathotypes of Bipolaris sorokiniana were compared for their effect on leaf blight severity and yield contributing characters by inoculating plants of wheat cv. kanchan at maximum tillering stage under control condition in pot trials. The pathotypes differed among themselves in respect of leaf blight severity that scored from 61 to 81. In case of yield contributing characters, the pathotypes did not differ among themselves that indicates all available pathotypes of B. sorokiniana in Bangladesh are of equal value in respect of wheat cultivation.
  Shaha Ranajit Kumar , N.K. Sana and I. Hossain
  Seeds storage nutrient substances like protein, fat and carbohydrate used up during germination for seedling growth. Brassica seeds (Brassica napus L) were germinated at various concentrations of NaCl and Na-Phosphate buffer up to 200 mM. Germinating levels, seedling length, degradation of seed storage substances and lipase activity were investigated. High salt concentrations resulted in retardation of seed germination compared with buffer and distilled water treatment. Degradation of storage substances like free sugar, reducing sugar, starch, lipid and protein were severely reduced by elevated concentration of salts doses higher than 100 mM and Na-Phosphate buffer doses higher than 150 mM, respectively. The mobilization of storage lipid in water and buffer treated Brassica seedling started about 22 and 32 h respectably after imbibitions but salts treated germinating Brassica seedling delayed about 48 h after imbibitions. Lipase activity inhibited by salts treatment was confirmed by using triolein as a substrate.
  D. Mohammad and I. Hossain
  Seed  treatment with biofertilizers in controlling foot and root rot of binamoog-3 and binamoog-4 was investigated under field condition. Biofertilizer significantly increased seed germination and decreased incidence of foot and root rot of mungbean. Treatment of seeds of binamoog-3 with biofertilizer showed 5.67% increase in germination over control, but in case of binamoog-4 10.81% increase in germination over control was achieved by treating seeds with biofertilizer. Biofertilizers resulted 77.79% reduction of foot and root rot disease incidence over control in binamoog-3 and 76.78% reduction of foot and rot disease in binamoog-4. Seed treatment with biofertilizer also produced up to 20.83% higher seed yield (t ha‾1) over untreated control in binamoog-3 and 12.79% higher seed yield over control in binamoog-4.
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