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             spp. isolated from saline habitat  of  Bangladesh.   the population was less ranging from 17.3 × l0
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             Bang. J. Life Sci., 2007, 19 (2), 55-60.             to 58.6  × l0  cfu/g. Highest number of bacteria
                                                                  was found in the root samples and the  least  in
             The respiratory activity and  nitrogen  fixing       non-rhizosphere soil samples. In  case  of  all
             potential of five strains of Azospirillum lipoferum,   samples the Azospirillum population ranged from
             three strains  ot  Azospirillum brasilense, three    0.l × l0  to 24.6 × l0  MPN/g dry wt. and 0.l × l0
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             strains of  Azospirillum halopraeferens and one      to 14.4  × l0  MPN/g dry wt.  in  saline  medium
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             strain of  Azospirillum amazonense isolated from     (semi-solid Nfb + 3% NaCl) and normal medium
             saline habitat in the district  Satkhira,  Bangladesh   (semi-solid  Nfb  without   extra    NaCl)
             were studied. The salt, NaCl has shown definite      respectively.  Root samples harboured highest
             effect  on the respiratory activity and nitrogen     population of  Azospirillum and non-rhizosphere
             fixing potential of the selected  strains  of        soil samples showed the least.
             Azospirillum spp. The activity and the rate  of
             nitrogen fixation of the strains MR-1, MR-3, MR-     354  SOLAIMAN, A. R. M. & RABBANI, M.
             4, MR-8 and MR-11 were found maximum at 3%           G.  (Dept. of Soil Science,  Bangabandhu  Sheikh
             NaCl. The other strains MR-5, MR-6, MR-7, MR-        Mujibur  Rahman Agricultural University, Salna,
             13,  MR-14, MR-15 and MR-16 showed highest           Gazipur). Effects of  Rhizobium Inoculant,
             nitrogen fixation and respiratory activity  at  5%   Compost  and Nitrogen on Edible-Podded Pea.
             NaCl. Among the strains, MR-7, MR-13 and MR-         Bang. J. Microbiol,. 2005, 22 (1), 5-9.
             16 strains were comparatively more efficient  in     The effects of  Rhizobium inoculant, compost and
             nitrogen fixing ability and  respiratory  activity   nitrogen (N) on nodiilation, growth,  dry  matter
             under stressed condition due to salinity.            production, yield attributes and yield of  edible-
                                                                  podded pea (Pisum sativum) var. macrocarpon
             353  RAHMAN, M.M.; MUBASSARA, S.;                    were  assessed  by a field experiment. Among the
             KHAN, Z.U.M.  (Dept. of Botany, Jahangirnagar
                                                                  treatments  Rhizobium inoculant alone  performed
             University, Savar, Dhaka) & HOQUE, S. (Dept. of      best in recording number and dry weight of
             Soil,  Water  & Environment, Dhaka University,       nodules per plant. The highest green pod yield of
             Dhaka). Aerobic heterotrophic bacteria  and          11.88 t/ha (153% increase over control) and mature
             Azospirillum in certain saline soils of Bangladesh.   seed yield of 1.84 t/ha (127% increase  over
             Bang. J. Life Sci., 2006, 18 (1), 105-110.           control) were obtained by the application of 150 kg
                                                                  N/ha. The effect of 100 kg N/ha was similar to the
             The population of aerobic  heterotrophic  bacteria   effect of 150 kg N/ha in  recording  plant  height,
             and microaerophilic diazotroph  Azospirillum         root  length, dry weight of shoot, number of
             occurring in the saline habitat of  a  saline  prone   pods/plant,  number of mature seeds/pod, 1,000-
             zone of Satkhira district,  Bangladesh  was          seed weight, green pod yield and mature seed yield
             studied. These organisms were found to occur in      of edible podded pea. Further, the effect of
             the saline non-rhizosphere soil, and also in the     Rhizobium inoculant alone was comparable to the
             root and rhizosphere soil of  Cynodon dactylon.      effect of 100 kg N/ha in most of the parameters of
             The  total  aerobic heterotrophic bacteria in root   the crop studied.
             samples in control medium (nutrient agar) varied
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             from 31.2 × l0  to 67.2 × l0  cfu/g but in saline    632 :  AGRICULTURE : PLANT
             medium (nutrient agar with 3% additional NaCl)
                                                                  INJURIES, DISEASES, PESTS


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