2010•DOAJ (DOAJ: Directory of Open Access Journals)Requires access
EFFECT OF DIFFERENT STRAINS OF BRADYRHIZOBIUM JAPONICUM ON MICRONUTRIENTS UPTAKE IN SHOOTS AND YIELD OF SEEDS IN SOYBEAN (GLYCINE MAX L.)
Azardokht Mehdipoor, Rezaei Rezaei, Ahmad Asgharzadeh, Ali Cherati
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Abstract
Rhizobium inoculants have been used for a long period of time to increase yield and decrease nitrogen fertilizers application in different legume crops. Application of these biological fertilizers can provide benefits for environmental purposes and considerable improvement in yield. In order to investigate the effects of inoculating soybean seeds with six different strains of Bradyrhizobium japonicum (include domestic product of soybean inoculum; RS150, RS151, RS152, RS154 and Nitrogen-Italia inoculums) on uptake of microelements in shoots and subsequently yield, an experiment was conducted on field conditions. In 50 percent flowering stage, leave samples were collected and Fe, Cu, Zn and Mn amount of the samples were determined. Yield was also measured in harvesting time. Results showed that Bradyrhizobium bacteria inoculation had a significant effect on nutrients content of leaves in comparison with the control. In addition, comparing yield in control with other treatments showed that the influence of inoculation on yield was significant. Application of biological fertilizers is therefore so important in optimizing fertilizer consumption in agricultural and ecological system. Thus, biological fertilizers can be used instead of chemical fertilizers due to their considerable effects on increasing yield and diminishing harmful effects of chemical fertilizers on the nature.