NxCO2xI: v2.1

Repository contains data and analyses reported in Perkowski et al. (in prep), which reports findings from a growth chamber experiment that grew soybean (Glycine max L. (Merr)) seedlings under full factorial combinations of two CO2 treatments, two inoculation treatments, and nine soil nitrogen fertilization treatments.

New in v2.1: correct error with chlorophyll content equation and refine code per revision submitted to PC&E.