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Effects of Mechanical Weed Control in Spring Cereals – Flora, Fauna and Economy
Appendix D. Data for estimating the vegetation effect on densities of polyphagous arthropod predators in spring wheat. All data presented are plot averages collected in late May and early June in plots receiving a maximum of two weed harrowings. Arthropods = the polyphagous predator complex Agomum spp., Bembidion spp., Linyphiidae and Tachyporus spp.
| Year |
Farm |
Arthropods |
Distance |
Crop |
Weed |
| |
|
No. / m² |
Loge m to perenn. veg. |
g / m² |
g / m² |
| 2004 |
Asnæsgård |
9.2 |
|
5.1 |
151.2 |
|
7.6 |
|
| |
Viskingegård |
10.5 |
|
4.3 |
292.7 |
|
8.9 |
|
| |
Vibygård SØ |
18.1 |
|
4.8 |
339.0 |
|
30.5 |
|
| |
Vibygård NV |
21.0 |
|
4.4 |
300.4 |
|
11.1 |
|
| |
Oremandsgård |
8.1 |
|
4.7 |
174.5 |
|
10.1 |
|
| |
Gl. Oremangsgård |
21.8 |
|
3.8 |
117.0 |
|
55.9 |
|
| 2005 |
Asnæsgård |
5.9 |
|
4.0 |
305.4 |
|
2.8 |
|
| |
Viskingegård |
19.1 |
|
4.5 |
373.6 |
|
10.8 |
|
| |
Vibygård SØ |
10.4 |
|
4.8 |
421.1 |
|
16.3 |
|
| |
Vibygård NV |
17.2 |
|
4.6 |
119.5 |
|
23.4 |
|
| |
Oremandsgård |
27.0 |
|
3.7 |
348.0 |
|
24.1 |
|
| |
Gl. Oremangsgård |
22.7 |
|
3.7 |
56.9 |
|
29.7 |
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Version 1.0 August 2007, © Danish Environmental Protection Agency
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