Fig. 2: ΔSOC in the 0–15 cm and 0–90 cm soil profile from 1989 to 2019 for different data collection and analysis methods. | Communications Earth & Environment

Fig. 2: ΔSOC in the 0–15 cm and 0–90 cm soil profile from 1989 to 2019 for different data collection and analysis methods.

From: Soil carbon maintained by perennial grasslands over 30 years but lost in field crop systems in a temperate Mollisol

Fig. 2

Center bar represents change in soil organic carbon (ΔSOC) between 1989 and 2019 estimated by a linear mixed effects model. Boxes represent +/- the standard error. Whiskers represent upper and lower 90% confidence limits. Treatment abbreviations are as follows: Maize cropping system of continuous Maize, MS minimum tillage cropping rotation of Maize to soybean, org. MSW organic cropping rotation of Maize to soybean to winter wheat with cover crop, MaAA cropping rotation of maize followed by 3 years of conventional alfalfa, org. Mo/aA organic cropping rotation of Maize followed by oats/alfalfa followed by alfalfa, MIRG management intensive rotationally grazed pasture seeded to red clover, timothy grass smooth bromegrass and orchardgrass, Prairie cool-season grassy waterways established in 1990 planted to soy in 1998 and to native warm-season grass mixes in 1999.

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