Paper Title :Plant Growth and Yield Enhancement of Soybean by Inoculation With Symbiotic and Nonsymbiotic Bacteria
Author :Timea Hajnal Jafari, Simonida Đuric, Dragana Stamenov
Article Citation :Timea Hajnal Jafari ,Simonida Đuric ,Dragana Stamenov ,
(2018 ) " Plant Growth and Yield Enhancement of Soybean by Inoculation With Symbiotic and Nonsymbiotic Bacteria " ,
International Journal of Advances in Science, Engineering and Technology(IJASEAT) ,
pp. 33-36,
Volume-6, Issue-3, Spl. Iss-2
Abstract : Microbial inoculants from the the group of symbiotic-nitrogen-fixing rhizobia are well known and widely used in
production of legumes . On the other hand, nonsymbiotic plant growth promoting rhizobacteria (PGPR) are not commonly
used in practice. The objective of this study was to examine the effects of soybean inoculation with symbiotic and
nonsymbiotic bacteria on plant growth and seed yield of soybean. Microbiological activity in rhizospheric soil was also
determined. The experiment was set up using a randomized block system in filed conditions with the following treatments:
control-no inoculation; treatment 1-Bradyrhizobium japonicum; treatment 2-Azotobacter sp.; treatment 3-Bacillus sp..In the
flowering stage of growth (FS) the number of nodules per plant (NPP), root length (RL), plant height (PH) and weight (PW)
were measured. The number of pod per plant (PPP), number of seeds per pod (SPP) and seed weight per plant (SWP) were
recorded at the end of vegetation period (EV). Microbiological analyses of soil included the determination of total number of
bacteria (TNB), number of fungi (FNG), actinomycetes (ACT) and azotobacters (AZB) as well as the activity of the
dehydrogenase enzyme (DHA). The results showed that bacterial inoculation led to the formation of root nodules regrdless
of the treatments with statisticali no significant difference. Strong nodulation was also present in control treatment. RL and
PH were positively influenced by inoculation with Azotobacter sp. and Bacillus sp., respectively. Statistical analyses of the
number of PPP, number of SPP and SWP showed no significant differences among investigated treatments. High average
number of microorganisms were determined in all treatments. Most abundant were TNB (log No 8,010) and ACT (log No
6,055) than FNG and AZB with log No 4,867 and log No 4,025, respectively. The highest DHA activity was measured in the
FS of soybean in treatment 3. The application of nonsymbiotic bacteria in soybean production can alleviate initial plant
growth and help the plant to better overcome different stess conditions caused by abiotic and biotic factors.
Keywords: soybean, yield, microbial activity, PGPR.
Type : Research paper
Published : Volume-6, Issue-3, Spl. Iss-2
DOIONLINE NO - IJASEAT-IRAJ-DOIONLINE-13758
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Published on 2018-12-13 |
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