From: Simulated responses of soil organic carbon stock to tillage management scenarios in the Northwest Great Plains
Cropping system
NT
RT
CT
Total
Corn
4.2
3.7
3.6
11.5
Small grain
20.4
24.8
21.4
66.6
Soybean
2.9
2.4
3.1
8.4
Other
2.7
4.5
6.9
14.0
Total planteda
29.9
35.2
34.9
100.0