1. Araújo FF, Hungria M (1999) Nodulação e rendimento de soja co-inoculada com Bacillus subtilis e Bradyrhizobium japonicum/B. elkanii. Pesq Agropec Bras 34:1633–1643
2. Ashraf MA, Rasool M, Mirza MS (2011) Nitrogen fixation and indole acetic acid production potential of bacteria isolated from rhizosphere of sugarcane (Saccharum officinarum L.). Adv Biol Res 5:348–355
3. Askary M, Mostajeran A, Amooaghaei R, Mostajeran M (2009) Influence of the co-inoculation Azospirillum brasilense and Rhizobium meliloti plus 2,4-D,4-D on grain yield and N, P, K content of Triticum aestivum (Cv. Baccros and Mahdavi). Am-Eur J Agric Environ Sci 5:296–307
4. Bárbaro IM, Machado PC, Bárbaro Junior LS, Ticelli M, Miguel FB, Silva JAA (2009) Produtividade da soja em resposta à inoculação padrão e co-inoculação. Colloq Agrar 5:1–7
5. Baset Mia MA, Shamsuddin ZH, Mahmood M (2010) Use of plant growth promoting bacteria in banana: a new insight for sustainable banana production. Friends Science. Available at: < http://www.fspublishers.org/ijab/past-issues/IJABVOL_12_NO_3/29.pdf >. Accessed 28 July 2012