Biological and Physicochemical Parameters Related to the Nitrogen Cycle in the Rhizospheric Soil of Native Potato (<i>Solanum phureja</i>) Crops of Colombia

<table>Principal component analysis of physical-chemical, biochemical, and biological data related to nitrogen cycle. The parameters represented in this analysis were: (a) protease: protease activity, OC: organic carbon, N: percentage of total nitrogen, PRO: proteolytic bacteria counts, productivity: crop productivity, and (b) ARA: nitrogenase activity, Mg: magnesium, H: moisture percentage, AMO: ammonifiers, NFB: nitrogen-fixing bacteria counts, NH4: ammonium, Fe: iron.</table>

Applied and Environmental Soil Science

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Figure 5

Figure 5: Biological and Physicochemical Parameters Related to the Nitrogen Cycle in the Rhizospheric Soil of Native Potato (<i>Solanum phureja</i>) Crops of Colombia 

Figure 5 | Biological and Physicochemical Parameters Related to the Nitrogen Cycle in the Rhizospheric Soil of Native Potato (Solanum phureja) Crops of Colombia 