Fig. 2
From: Soil carbon fluxes and balances of crop rotations under long-term no-till
Amount of crop residue (a), Carbon (b), and Nitrogen (c) inputs from crop rotations in spring 2013, soybean 2013/2014, fall-winter 2014, spring 2014, and soybean 2014/2015. Error bars represent standard deviation of data. *Means followed by different letters, lower-case letters within spring treatments and upper-case letters within winter crops differ from each other by the paired t test (LSD, p < 0.05)