Abstract
The Experiment was performed under glass house condition (24°8´ N 90°0´ E) with eight rhizobial strains namely MBR-3, MBI-5, MBI-19, MBM-4, MBM-8, MBP-10, MBB-3 and MBJ-7 obtained from mungbean rhizosphere of different locations in Bangladesh and BINA MB-1 (a registered biofertilzer for mungbean) was used as standard check along with un-inoculated control to test their potentiality under glass house condition for mungbean. Result revealed that the higher plant growth, biochemical parameters, seed yield attributes and seed yield were recorded in three bacterial isolates viz., MBI-5, MBB-3 and biofertilizer, BINA MB-1 with being the highest in MBI-5. Therefore, the isolate MBI-5 may be used as commercial biofertilizer after few more trials in the different mungbean growing areas of Bangladesh
 Res. Agric., Livest. Fish.7(2): 191-197, August 2020
Highlights
The experimental material consists of one mungbean popular variety viz., Binamung-8 which were inoculated with 9 different rhizobial starins/isolates namely MBR-3, MBI-5, MBI-19, MBM-4, MBM-8, MBP-10, MBB-3 and MBJ-7 obtained from root nodules of mungbean plant of different locations in Bangladesh and BINA MB-1 was used as standard check along with un-inoculated control to test their potentiality under glass house condition for mungbean
Results indicated that plant height, leaf area (LA), biological yield (BY) and nodule production was greater in bacterial isolates treated plant than in control plant
The isolate MBI-5 showed higher seed yield (Table 3). This result indicates that higher LA and BY is desirable for getting higher seed yield in mungbean
Summary
An alternative approach is to use Biological nitrogen fixation (BNF) resulting from a symbiosis between legume crops and root nodule bacterium, Rhizobium can ameliorate these problems by reducing the N-fertilizer inputs required to ensure high productivity (Gupta and Namdea, 2008). Bradyrhizobium strains are present in all soils of Bangladesh but they may not be effective in nodulation and N-fixation. It was thought that there is a scope for utilizing the effective Bradyrhizobial strains for obtaining more yield of mungbean under field conditions which may play vital role in improving soil environment and agricultural sustainability. To reduce the production cost and to fulfill the demand, more pulse production could be achieved through seed inoculation with Bradyrhizobium strains which is known to increase biological nitrogen fixation (BNF). This study was undertaken to screen the BNF strains that are compatible with Vigna radiata and use as biofertilizer
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