Biological and Physicochemical Parameters Related to the Nitrogen Cycle in the Rhizospheric Soil of Native Potato (Solanum phureja) Crops of Colombia
Figure 4
Nitrogenase activity. The bars correspond to average enzymatic activity, expressed in n moles of ethylene per gram of dry soil during 24 hours. Values shown with the same letter were not significantly different according to Tukey’s test, significance level. The error bars correspond to standard deviation bars for each data set.
