Table 2 Residue evaluation of ethyl formate (EF) on crop leaves and soil after EF fumigation for 2 h with 6 g/m3 EF in 340 m3 greenhouse in field scale (n = 3 for crop, n = 6 for soil, temperature: 26.8–34.2 ℃, Humidity: 70–99%)
Crop/soil | Stage | Control | 1 hpf | 3 hpf | |||
|---|---|---|---|---|---|---|---|
Sample (g) | EF (µg/g) | Sample (g) | EF (µg/g) | Sample (g) | EF (µg/g) | ||
Watermelon | Seedling | 1.02 ± 0.01 | < LODa | 1.07 | < LOD | 1.04 | < LOD |
Flowering | 1.06 | < LOD | 1.05 | < LOD | |||
Fruiting | 1.05 | < LOD | 1.05 | < LOD | |||
Zucchini | Seedling | 1.03 ± 0.01 | < LOD | 1.05 | < LOD | 1.06 | < LOD |
Flowering | 1.08 | < LOD | 1.03 | < LOD | |||
Fruiting | 1.05 | < LOD | 1.06 | < LOD | |||
Melon | Seedling | 1.02 ± 0.02 | < LOD | 1.07 | < LOD | 1.04 | < LOD |
Flowering | 1.06 | < LOD | 1.05 | < LOD | |||
Fruiting | 1.05 | < LOD | 1.05 | < LOD | |||
Soil | 1.03 ± 0.03 | < LOD | 1.06 | < LOD | 1.03 | < LOD | |