Claim · model-written summary
Partial stover removal decreased SOC by 2.4 Mg SOC ha −1 at 0‐ to 30‐cm depth, averaged over N rates.
- Taxon
- Corn
Zea mays subsp. mayse0 - Treatment
- PRe6
- Outcome
- SOCe6
- Direction
- decreasede6
- Value
- 2.4 Mg SOC ha −1e6
- Qualifier
- 0‐ to 30‐cm soil depthe6
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Corn ( Zea mays L.) stover removal”
e6“Averaged over N rates, PR removal decreased SOC 2.4 Mg SOC ha −1 , but FR increased SOC 6.8 Mg SOC ha −1 in 0‐ to 30‐cm soil depth”
Title
Stover Removal Affects No‐Till Irrigated Corn Yields, Soil Carbon, and Nitrogen
Ardell D. Halvorson; Catherine E. Stewart Agronomy Journal 2015. doi:10.2134/agronj15.0074
Other claims from this paper (13)
- Intervention effect Stover removal increased early spring soil temperatures compared with full stover retention.
- Intervention effect Stover removal enhanced early plant development compared with full stover retention.
- Association Grain and stover yields increased with increasing N rate, and varied with stover treatment.
- Association Plant N and C uptake increased with increasing N rate.
- Intervention effect Averaged over N rate, grain yields were greater with partial stover removal than with full stover retention.
- Intervention effect Averaged over N rate, stover yields were lower with partial stover removal than with full stover retention.
- Association The C/N ratio of stover declined with increasing N rate.
- Intervention effect Nitrogen fertilization did not significantly influence SOC and TSN stocks after 7 years.
- Intervention effect Full stover retention increased SOC by 6.8 Mg SOC ha −1 at 0‐ to 30‐cm depth, averaged over N rates.
- Intervention effect TSN stocks increased significantly with full stover retention (1176 kg N ha −1).
- Intervention effect TSN stocks did not increase with partial stover removal (70 kg N ha −1).
- Intervention effect Continued long-term residue removal will negate initial yield benefits from more rapid early spring plant development.
- Intervention effect Partial stover removal as a cellulosic feedstock at ethanol-production levels would negatively impact soil quality in irrigated no-till corn in Colorado.