Table 32.
Surveys for the detection of P. s. subsp. stewartii in North Italian regions (2014–2018) in fields for production of seed for sowing. The area of fields for the production of maize seed for sowing in these regions varies and is generally in the order of 10 ha
| 2014 | 2015 | 2016 | 2017 | 2018 | |
|---|---|---|---|---|---|
| Emilia Romagna | |||||
| N surveyed hectares | 835 | 840 | ~ 1,000 | 970 | 950 |
| N collected samples | 4 | 2 | 15 | 29 | 33 |
| N positive samples | 0 | 2 | 1 | 0 | 2 |
| Veneto | |||||
| N surveyed hectares | 930 | – | 743 | 106 | 122 |
| N collected samples | 0 | – | 0 | 11 | 10 |
| N positive samples | 0 | – | 0 | 3 | 6 |
| Lombardy | |||||
| N surveyed hectares | 2,654 | 1,852 | 1,446 | 1,102 | 984 |
| N collected samples | 0 | 0 | 0 | 0 | 11 |
| N positive samples | 0 | 0 | 0 | 0 | 8 |