Mangerich, Johannes and Haßler, Paul and Appel, Thomas (2023) Earthworms in the soil under a beet-cereal rotation after 24 years of no plowing with and without green manure. In: Jahrestagung der DBG 2023 in Halle "Böden – divers & multifunktional", 02. bis 08.09.2023, Halle (Saale).
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Abstract
Annual plowing is helpful in controlling weeds, but it can also be detrimental to earthworms in the soil. In a now 24-year long-term trial in the dry¬lands of southwest Germany, it was investigated how the intensity of tillage (plow 30 cm deep vs. goose share culti¬vator 15 cm deep) and the implementation of a green manure every 3rd year within the crop rotation (with vs. without) affects earthworm population. The follo¬wing two questions were the main focus: (1) Does the earthworm population suffer over time due to the low humus regene¬ration capacity of the beet-cereal crop rota¬tion with straw removal and without organic fertilization? (2) Can the negative effect of low humus-regeneration capacity be compensated by earthworm-promoting measures such as no plowing and green manuring? In the 9 years from the first to the second campaign, earthworm biomass decreased by about 30 % (mean across all variants). With one exception, earthworm biomass was always lower in the plowed soil than in the corresponding cultivator variant. For endogeic earthworms, plowing - especially in combination with green manure - was even rather positive. Generally, earthworms benefited more from green manuring than from reduced tillage.
| Item Type: | Conference or Workshop Item (Contribution to "Reports of the DBG") |
|---|---|
| Uncontrolled Keywords: | Earthworms, no plowing, green manure, long-term soil tillage experiment, sugar beet, crop rotation |
| Divisions: | Kommissionen > Kommission III: Bodenbiologie und Bodenökologie |
| Depositing User: | Thomas Appel |
| Date Deposited: | 08 Nov 2023 11:23 |
| Last Modified: | 08 Nov 2023 11:23 |
| URI: | https://eprints.dbges.de/id/eprint/1872 |
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