Effect of nitrogen and Gluconoacetobacter diazotrophicus on growth of sugarcane

A field experiment on effect of different levels of nitrogen and Gluconoacetobacter diazotrophicus was carried out on sugarcane (CO-86032) during 2015–16. G. diazotrophicus inoculation and N-fertilizer application was not found to increase significantly emergence percentage invarious treatments, whereas other growth parameters viz.shoot length, root length and vigour index were found significantly increased due to various treatments. Amongst all the treatments, 75% RDN + G.diazotrophicus sett treatment has given maximum emergence percent i.e. 86.67 per cent of sugarcane at 30 days after planting. Highest shoot length, root length and vigour index of sugarcane were recorded in treatment of 75% RDN + G.diazotrophicus sett treatment. The treatment of 75% RDN + G. diazotrophicus (T₆) sett treatment recorded highest population dynamics of G. diazotrophicus i.e. 9.0 x10⁵ cfu/gand highest nitrogen content in leaf i.e. 2.62 per cent at 120 days afterplanting.