Influence of different Bradyrhizobium japonicum isolates on growth parameters and yield of soybean.

V.V.Deshmukh; R.W.Ingle; M.S.Joshi; Mayur Dikkar

Volume : VI, Issue : XII, December - 2016

Influence of different Bradyrhizobium japonicum isolates on growth parameters and yield of soybean.

V. V. Deshmukh, R. W. Ingle, M. S. Joshi, Mayur Dikkar

Abstract :

The field experiment was conducted during 2008 to 2010 to see the effect of different Bradyrhizobium japonicum isolates on root, shoot, nodule number, N content, N uptake and yield of soybean at departmental field of Department of Plant Pathology, Dr.PDKV, Akola (M.S.). The results revealed that maximum shoot length was recorded in isolates BJ–28 after 30 days where as B29, BJ5, BJ4 showed maximum shoot length after 60 days. Maximum root length was recorded in BJ25 followed by BJ2 and BJ26 similarly, maximum number of nodules per plant were recorded in BJ9 and least in BJ13 at 30 DAS. Isolates BJ21 (107.83) and BJ23 showed maximum nodules (100.83) per plant at 60 DAS. Highest yield i.e. 10.31 q/ha, 10.13 q/ha and 10.05 q/ha was obtained due to inoculation of BJ–28,BJ2 and BJ1 respectively. Maximum N content was recorded in BJ1 and BJ2 i.e.0.82% during first year and BJ21, BJ4 and BJ3 during 2009–10. Where as in all BJ4 and BJ1 showed maximum nitrogen content as compared to other isolates. Maximum nitrogen uptake was observed in BJ4, BJ1,BJ3 and BJ21. BJ32 showed minimum uptake as compared to other isolates.