| Value | Category | Cases | |
|---|---|---|---|
| None | 2775 |
80.2%
|
|
| 1 | Straw, incorporated shortly before cultivation (30 days or less} | 448 |
12.9%
|
| 2 | Straw, incorporated long before cultivation (more than 30 days) | 239 |
6.9%
|
| 9 | Other (specify) | 0 |