This zipped folder contains the code and datasets used for an experiment conducted over six years (2015–2020) at the Wiregrass Research and Extension Center in Headland, AL to examine rye biomass production. Treatments included four planting dates (late October, early November, late November, and early December), two seeding rates ( 67 and 101 kg ha^-1), and four nitrogen rates (0, 34, 67, and 101 kg ha^-1) replicated four times for a total of 128 observations each year. Measured and/or calculated variables from the data set included biomass, total C and N concentrations for the plant material, C:N ratio, N uptake values, as well as cost info for the biomass. In addition, there are three years of peanut yield data (2015, 2017, 2019) and only two years of cotton yield data (2016, 2020).  No cotton data was collected for 2018 due to hurricane damage.  Initial and final soil total C values were also measured across the 0 and 101 kg N ha^-1 rates for the 67 kg ha^-1 seeding rate.  

All data is contained in a non-proprietary CSV format or R scripts.