Table 5 Area of land in various crop rotations 2019–2021, and potential change in SOC stocks across policies and states
From: Crop rotation and the impact on soil carbon in the U.S. Corn Belt
OH | IA | IL | IN | Corn Belt | |
|---|---|---|---|---|---|
Area of land (hectare) | |||||
Mono-cropped with soybeans out of 3 years | 352,647 | 31,700 | 178,870 | 174,739 | 737,955 |
Increase of SOC (Mg C) | |||||
by adding 1 year of corn | 11,589,507 | 1,041,791 | 5,878,430 | 5,742,692 | 24,252,420 |
by adding 2 years of corn | 16,438,138 | 1,477,639 | 8,337,753 | 8,145,227 | 34,398,758 |
by adding 3 years of corn | 27,574,900 | 2,478,732 | 13,986,541 | 13,663,581 | 57,703,754 |
Area of land (hectare) | |||||
Cropped with soybeans for 1 year and corn for 2 years out of 3 years | 1,434,097 | 3,270,538 | 3,387,646 | 1,895,721 | 9,988,002 |
Increase of SOC (Mg C) | |||||
by adding 1 year of corn | 19,892,410 | 45,365,749 | 46,990,159 | 26,295,609 | 138,543,927 |
by adding 2 years of corn | 65,578,921 | 149,556,379 | 154,911,542 | 86,688,221 | 456,735,063 |
Area of land (hectare) | |||||
cropped with soybeans for 2 years and corn for 1 year out of 3 years | 880,021 | 4,571,320 | 3,708,637 | 1,615,100 | 10,775,078 |
Increase of SOC (Mg C) | |||||
by adding 1 year of corn | 31,218,324 | 162,165,459 | 131,562,148 | 57,294,931 | 382,240,862 |