Switchgrass Yields — Switchgrass NItrogen Fixation Experiemnt
Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Dry matter switchgrass yields from machine harvests of the Switchgrass Nitrogen Fixation Experiment (plots 1-16). Plots were converted from the corn-soybean-wheat rotation of the LTER Main Cropping System Experiment (MCSE) to switchgrass in 2016, with the first harvest in 2018. See the Interactions Experiment for agronomic grain yields before conversion.
This datatable is part of the Interactions Experiment dataset.
This dataset contains data from the Interactions Experiment established in 1985 that examined the interactive effects of tillage (conventional (CT) and no tillage (NT)) and fertilization (ferti lized (F) and not-fertilized (NF)) on crop production. The experimental site contained two areas that differed in prior land use: one site was historically tilled (pl ots 1-16) and the other has never been tilled (plots 17-24). All cropped plots (all plots except the Reference plots) were originally planted to continuous corn and s witched to the same corn-soybean-wheat rotation as the LTER Main Cropping System Experiment (MCSE) around 2001. The historically tilled portion of the experiment was discontinued after the 2015 harvest and 2016 conversion to switchgrass. The experiment continues in the never tilled plots including the cropped plots (T8nt; 17, 20, 21, and 24) which follow the rotation and management of the MCSE No-till (T2) treatment and the reference plots (T8; 18, 19, 22, and 23) which are maintained as the MCSE Mown Grassland (T8) treatment. T8 and T8nt data are found in MCSE da tasets.
Note
Experiment: | Switchgrass NItrogen Fixation Experiemnt |
Data available from: | December 2018 to November 2019 |
Dataset: | KBS151 |
Datatable ID: | KBS127-006.74 |
Core Areas | Primary Production |
Repository link: | |
Related Tables: | |
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Last Updated | 2024-04-24 |
Variate | Description | Units |
---|---|---|
sample date | harvest date | |
plot | plot name | |
species | species planted and harvested | |
yield metric tons ha | dry matter yield in metric tons/ha |
Protocols |
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Data Excerpt
sample_date | plot | species | yield_metric_tons_ha |
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2018-12-19 | INT1 | Panicum virgatum L. | 3.29065 |
2019-11-04 | INT1 | Panicum virgatum L. | 7.0575433 |
2018-12-19 | INT2 | Panicum virgatum L. | 3.1955738 |
2019-11-04 | INT2 | Panicum virgatum L. | 3.834302 |
2018-12-19 | INT3 | Panicum virgatum L. | 6.468461 |