Interaction between root and stem nodulation in hydroponically grown plants of Sesbania rostrata

Abstract

Plant growth parameters, nitrogen content, root and stem nodulation, and acetylene reduction activity of nodules after root and shoot inoculation of hydroponically grown plants of Sesbania rostrata were studied. Stem nodulation reduced the number of root nodules whether stem inoculation was done simultaneously before or after root inoculation. Stem inoculation seven days after root inoculation gave best plant growth. Acetylene reduction was greatest in the root nodules. No significant difference in nitrogen % was observed with the different types of inoculation.