Hallama, Moritz; Pekrun, Carola; Pilz, Stefan; Jarosch, Klaus A.; Frąc, Magdalena; Uksa, Marie; Marhan, Sven; Kandeler, Ellen (2021). Interactions between cover crops and soil microorganisms increase phosphorus availability in conservation agriculture. Plant and Soil, 463(1-2), pp. 307-328. Springer 10.1007/s11104-021-04897-x
|
Text
Hallama_et_al_2021__Interactions_cover_crops_organic_P_enzymes.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (2MB) | Preview |
Aims An essential task of agricultural systems is to im- prove internal phosphorus (P) recycling. Cover crops and tillage reduction can increase sustainability, but it is not known whether stimulation of the soil microbial commu- nity can increase the availability of soil organic P pools. Methods In a field experiment in southwest Germany, the effects of a winter cover crop mixture (vs. bare fallow) and no-till (vs. non-inversion tillage) on microbial P- cycling were assessed with soybean as the main crop. Microbial biomass, phospholipid fatty acids (PLFAs), P cycling enzymes, and carbon-substrate use capacity were linked for the first time with the lability of organic P pools measured by enzyme addition assays (using phosphodi- esterase, non-phytase-phosphomonoesterase and fungal phytase).
Results Microbial phosphorus, phosphatase, and fatty acids increased under cover crops, indicating an en- hanced potential for organic P cycling. Enzyme-stable organic P shifted towards enzyme-labile organic P pools. Effects of no-till were weaker, and a synergy with cover crops was not evident.
Conclusions In this experiment, cover crops were able to increase the microbially mediated internal P cycling in a non-P-limited, temperate agroecosystems.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
08 Faculty of Science > Institute of Geography > Physical Geography > Unit Soil Science 08 Faculty of Science > Institute of Geography 08 Faculty of Science > Institute of Geography > Physical Geography |
UniBE Contributor: |
Jarosch, Klaus |
Subjects: |
500 Science > 550 Earth sciences & geology |
ISSN: |
0032-079X |
Publisher: |
Springer |
Language: |
English |
Submitter: |
Andrea Katja Weber |
Date Deposited: |
15 Apr 2021 10:59 |
Last Modified: |
05 Dec 2022 15:50 |
Publisher DOI: |
10.1007/s11104-021-04897-x |
BORIS DOI: |
10.48350/154721 |
URI: |
https://boris.unibe.ch/id/eprint/154721 |
Actions (login required)
 |
Edit item |