Review Article
Effect of Soil Physical State on the Earthworms in Hungary
Table 3
Earthworm burrow density (
2 mm burrows m
-2) in the top 20 cm layer of a brown gleyic forest soil, under maize (Pyhra, 1998–2006, from [
33]).
| Tillage variants | 1998 | 2000 | 2002 | 2004 | 2006 | Mean |
| Direct drilling | 374 | 425 | 386 | 407 | 1372 | 592.8 | Ridge till | 211 | 293 | 305 | 319 | 584 | 342.4 | Ploughing | 97 | 198 | 287 | 113 | 460 | 231.0 |
| Years | rainy | dry | rainy | average | average | |
|
|