Biological and Physicochemical Parameters Related to the Nitrogen Cycle in the Rhizospheric Soil of Native Potato (Solanum phureja) Crops of Colombia
Figure 3
Protease activity. The bars correspond to average enzymatic activity, expressed in μg of tyrosine per gram of dry soil during 2 h−1. Values shown with the same letters were not significantly different according to Tukey’s test, significance level. The error bars shown correspond to standard deviation for each data set.
