Impacts of cover crop planting dates on soils after four years. (30th March 2020)
- Record Type:
- Journal Article
- Title:
- Impacts of cover crop planting dates on soils after four years. (30th March 2020)
- Main Title:
- Impacts of cover crop planting dates on soils after four years
- Authors:
- Ruis, Sabrina J.
Blanco‐Canqui, Humberto
Elmore, Roger W.
Proctor, Christopher
Koehler‐Cole, Katja
Ferguson, Richard B.
Francis, Charles A.
Shapiro, Charles A. - Abstract:
- Abstract: Impacts of cover crop (CC) mixes and early CC planting on soil properties, CC biomass production, and CC biomass C input are not well understood. We assessed CC planting date (pre‐ or post‐harvest) and CC type (rye [ Secale cereale L.], mix of winter pea [ Pisum sativum L.], hairy vetch [ Vicia villosa L.], rye, and radish [ Raphanus sativus L.], or no CC) effects on soil physical properties, organic matter, and CC biomass C input under three no‐till continuous corn ( Zea mays L.) and corn‐soybean ( Glycine max L.) sites in the eastern Great Plains after 4 yr. Across sites and years, pre‐harvest‐planted CCs produced 0.81 ± 0.52 (mean ± SD), post‐harvest‐planted 0.59 ± 0.44, rye 0.83 ± 0.52, and mix 0.57 ± 0.42 Mg biomass ha −1 . Compared to no CC, pre‐ and post‐harvest–planted CC effects varied by site. Pre‐harvest–planted CCs increased wet‐aggregate stability by 17% and particulate organic matter by 31% under continuous corn at one of three sites compared with post‐harvest‐planted CCs. Similarly, the CC mix had variable effects on cone index but reduced bulk density by 7% at one site under continuous corn and increased wet‐aggregate stability by 21% at another site under corn−soybean. Planting date, but not CC type, effects were slightly more evident under continuous corn than corn−soybean. Across sites and years, pre‐harvest‐plant CC had 0.29 ± 0.38 Mg biomass C ha −1, post‐harvest‐planted 0.22 ± 0.30, rye 0.33 ± 0.37, and the mix 0.16 ± 0.27. Low CC biomassAbstract: Impacts of cover crop (CC) mixes and early CC planting on soil properties, CC biomass production, and CC biomass C input are not well understood. We assessed CC planting date (pre‐ or post‐harvest) and CC type (rye [ Secale cereale L.], mix of winter pea [ Pisum sativum L.], hairy vetch [ Vicia villosa L.], rye, and radish [ Raphanus sativus L.], or no CC) effects on soil physical properties, organic matter, and CC biomass C input under three no‐till continuous corn ( Zea mays L.) and corn‐soybean ( Glycine max L.) sites in the eastern Great Plains after 4 yr. Across sites and years, pre‐harvest‐planted CCs produced 0.81 ± 0.52 (mean ± SD), post‐harvest‐planted 0.59 ± 0.44, rye 0.83 ± 0.52, and mix 0.57 ± 0.42 Mg biomass ha −1 . Compared to no CC, pre‐ and post‐harvest–planted CC effects varied by site. Pre‐harvest–planted CCs increased wet‐aggregate stability by 17% and particulate organic matter by 31% under continuous corn at one of three sites compared with post‐harvest‐planted CCs. Similarly, the CC mix had variable effects on cone index but reduced bulk density by 7% at one site under continuous corn and increased wet‐aggregate stability by 21% at another site under corn−soybean. Planting date, but not CC type, effects were slightly more evident under continuous corn than corn−soybean. Across sites and years, pre‐harvest‐plant CC had 0.29 ± 0.38 Mg biomass C ha −1, post‐harvest‐planted 0.22 ± 0.30, rye 0.33 ± 0.37, and the mix 0.16 ± 0.27. Low CC biomass (<1 Mg ha −1 ) production may explain the limited CC effects. Overall, pre‐harvest‐planted CCs and CC mixes had minimal effects on soil properties in this region after 4 yr. … (more)
- Is Part Of:
- Agronomy Journal. Volume 112:Number 3(2020)
- Journal:
- Agronomy Journal
- Issue:
- Volume 112:Number 3(2020)
- Issue Display:
- Volume 112, Issue 3 (2020)
- Year:
- 2020
- Volume:
- 112
- Issue:
- 3
- Issue Sort Value:
- 2020-0112-0003-0000
- Page Start:
- 1649
- Page End:
- 1665
- Publication Date:
- 2020-03-30
- Subjects:
- Agronomy -- Periodicals
630 - Journal URLs:
- http://onlinelibrary.wiley.com/ ↗
- DOI:
- 10.1002/agj2.20143 ↗
- Languages:
- English
- ISSNs:
- 0002-1962
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - BLDSS-3PM
British Library HMNTS - ELD Digital store - Ingest File:
- 13195.xml