Potatoes | Maize | ||||||||
---|---|---|---|---|---|---|---|---|---|
Olivier et al. [29] | Goffart et al. [21]a | Aurbacher et al. [6]b | Areas [3] | Areas [4] | CIPF [7] | UCL [41] | |||
2009 | 2010 | ||||||||
Device | Barbutte | Barbutte | Self-developed prototypes | Prototypes (Grimme) | Disc and drum plough | Disc and drum plough | |||
Soil type | Sandy loam | Various, up to 28% sand | Silty “loess soils” | Silt loam | Loam | Sandy loam | n.a. | ||
Irrigation | No | No | Yes | Yes | Yes | No | No | ||
Micro-dam height (cm) | 10–17 | 10–17 | 20–27 | ≈ 5 | 13 | Several cm | |||
Distance between the micro-dams (m) | 1.5 | 1.6 | 1.5–8 | 1.6 | 1.5 | Several cm | |||
Plot length/area | 30 m | 30 m | Unknown | ≈ 5 m | Unknown | 72 m2 | 75 m2 | ||
Slope (%) | > 3 | < 3 and > 3 | 2–10 | < 3 | < 4 | 9, 16 | 10–12 | ||
Plant protection product(s) applied? | Yes, n = 4 | Yes, n = 5 | No | No | No | Yes, n = 4 | Yes, n = 1 |