Effects of inoculation of bean cultivars with Rhizobium legominosarum biovar phaseoli on yield and nitrogen fixation in Shahrekord condition

Document Type : Research Article

Authors

A Ghasemi pir balooti ¹

I Allahdadi ²

Gh Akbari ¹

A Gol paravar ¹

¹ -

² Tehran

10.22067/gsc.v2i1.1164

Abstract

In order to evaluate inoculation effects on bean (Phaseolus vulgaris L.) cultivars with different strains of Rhizobium legominosarum biovar phaseoli, a spilt plot experiment in randomized complete block design was conducted in the field at ShahreKord in 2002. The factors were four bacterial strains: L-78, L-47, L-125, l-109 and plus nitrogen control (100 kg Nitrogen/ha) and a control plot (without inoculation) in main plots and three cultivars bean: local shahrekord (spotted bean), Talash (spotted bean) and local shahreKord (red bean) in subplots. The results revealed that there were significant differences among factor A in grain yield, weight of pod per plants, number of pods per plants, number of seeds per pods, number and weight nod at 50% flowering (50 days after emergence), nitrogen concentration of leaf and stem and percent of nitrogen fixation. Treatment of inoculated seeds with L-125 strain and control demonstrated the highest and lowest grain yield, respectively. The results showed that all treatments were capable of nodulation. However, strains L-109 gave highest nodule dry weight and percent of fixed N2. An efficient symbiotic was achieved with strain L-109, since total N content of plants inoculated with these strains was similar to that of plants supplied with N –fertilizer treatment.

20.1001.1.20081472.1383.2.1.6.9

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