Abstract:
The effect of cobalt at 0.5, 1.0, 1.5 ppm was investgated on the dry matter yield, nodulation response (number and weight of nodules plant-1) and nitrogen fixing capacity of Sesbania Rostrata in a pot culture experiment. The results revealed that application of cobalt did not improve nodulation, however, it significantly improved the nitrogenase activity of nodules. Increasing rates of cobalt increased the dry matter yield of shoots and roots by 48.2, 49.4, 58.5 percent as compared to control. All the applied doses of cobalt significantly improved the N concentration and uptake by Sesbania Rostrata. The increase in shoots N uptake was upto 134.5 percent and in roots upto 62.2 percent.It is thus clear that application of cobalt greatly improved the nitrogenase activity and N -fixing capacity of sesbania rotrata, which in turn increased the dry matter yield of plants. The rate of 0.5 ppm cobalt was the optimum dose in the experiment.
Page(s):
83-85
DOI:
DOI not available
Published:
Journal: Nucleus, Volume: 32, Issue: 1--2, Year: 1995