Table 1 Experimental design of the study related to soil conditions.
Year | Soil condition | |||
|---|---|---|---|---|
No soybean | Chemical | No fertilizer | Cow manure | |
2019 | × | × | o | o |
2020 | o | o | o | o |
2021 | o | o | × | o |
Year | Soil condition | |||
|---|---|---|---|---|
No soybean | Chemical | No fertilizer | Cow manure | |
2019 | × | × | o | o |
2020 | o | o | o | o |
2021 | o | o | × | o |