Effect of Rhizobium leguminosarum bv. phaseoli application on field bean (Phaseolus vulgaris L.) production. [Master thesis]
2006
Marinkovic, J.
The objectives of this study were to characterize four strains of Rhizobium leguminosarum bv. phaseoli on the basis of their morphological properties, resistance to antibiotics and synthesis of exopolysaccharides and to assess their effectiveness under production conditions for four bean cultivars (Phaseolus vulgaris L.) on the basis of soil microbial activity, length and dry weight of plant, number of pods, number of grains per pod, grain weight and nitrogen contents in plant and grain. The results indicated that the strains differed considerably regarding the resistance to antibiotics. All Rhizobium leguminosarum bv. phaseoli strains produced succinoglycan (EPS 1st), but they differed in its production volume. Number of microorganisms in the rhizosphere depended on test year, phenological stage of plant, bean cultivar and applied treatment. Effect of inoculation on the studied parameters depended on test year, bean cultivar and applied treatment. The results obtained by bean inoculation with the Rhizobium leguminosarum bv. phaseoli strains indicated than inoculation caused significant yield increases. The cultivar Balkan had highest yields in both test years, while strain 3b/2 caused highest yield increases.
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