Evaluating the effects of different planting densities and inoculation with Rhizobium bacteria on morphological characteristics and yield of faba bean (cv.Barakat)

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Research Paper 01/07/2013
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Evaluating the effects of different planting densities and inoculation with Rhizobium bacteria on morphological characteristics and yield of faba bean (cv.Barakat)

Narges Alipour, GolamAli Akbari, Zahra Fakharian Kashani, MoradMohammadi
Int. J. Biosci.3( 7), 42-48, July 2013.
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Among legumes, Faba beans due to having proteins and essential amino acids and the ability of nitrogen fixation and symbiosis with Rhizobium bacteria, have high importance in terms of food and environmental effects. Growth and yield of Faba beans, like other crops, are functions of environmental factors and plant genotype. The experiment was conducted in the field area of300sq.m.ina completely randomized block design with split plots (split-plot) in three replications in the fall of 2009. Planting density, as the main factor of the test, has three levels: 1) A1: density of 100,000 plants per hectare (20 cm row plant spacing), 2) A2: density of 50,000 plants per hectare (40 cm row plant spacing), 3) A3: density of 25,000 plants per hectare (60 cm row plant spacing). Also the sub-factor of the experiment has 2 levels: 1) B1: seed not inoculated with bacteria, 2) B2: seed inoculated with bacteria. The results show that an increase in bush density causes a significant increase in total dry matter production per unit area, but in contrast, total dry matter per plant reduced due to high competition. Also, it was observed that Fababean seed inoculation with bacteria before sowing had a positive and significant effect on bush height, grain weight, grain filling of pods, number of pods, length and width of pods, reduction of flowers` fall and traits associated with yield and yield components. The study of the interactive effect of planting density and bacteria on Faba bean indicated that bean bushes containing seeds with bacteria and spacing 20 cm between plants on the row (a1b2) showed best results in terms of yield and yield components, bush height, plant growth.


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