Agronomic Yields - Annual Crops — Main Cropping System Experiment (MCSE)
Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use
Annual crop harvest data for corn, soy, and wheat from the Main Cropping System Experiment at the LTER Main Site as collected with commercial-sized equipment.
Prior to 2017, the yield was reported from the east half of the plot. In 2017 the protocol was changed to report the yield for the whole plot.
Praire strips were installed in 2019 in T3 and T4. We started reporting the crop yield as well as the economic yield which we define as the yield divided by the total plot area including the prairie strips. The prairie strips are 15 feet wide and the plots are nominally 300 feet (100 meters) wide.
This datatable is part of the Agronomic Yields in Row Crop Agriculture dataset. This data set contains information about agronomic yields for the Main Cropping System Experiment which include treatments 1-4 (corn – wheat – soybean rotations) and after 1994 treatment 6 (alfalfa). Agronomic yields are measured during normal crop harvest; yields are determined by machine harvesters appropriate to each crop as described in the Agronomic protocol.
Note
| Experiment: | Main Cropping System Experiment (MCSE) |
| Data available from: | July 1989 to July 2022 |
| Dataset: | KBS020 |
| Datatable ID: | KBS020-001.69 |
| Core Areas | Primary Production,Disturbance |
| Repository link: | http://doi.org/10.6073/pasta/00c3343378bf55e0727cccecc8a8ff41 |
| Related Tables: | |
| Personnel: |
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| Last Updated | 2023-02-03 |
| Variate | Description | Units |
|---|---|---|
| Date | harvest date | |
| Treatment | treatment | |
| Replicate | replicate | |
| Crop | crop species collected | |
| crop only yield bu A | This yield is based on the crop area. Crop kernel/seed harvested at crop harvest in bu/A (at standardized moisture for corn 15.5%, wheat/soybean 13%; conversions for corn: 56 pounds/bushel wheat/soybeans: 60 pounds/bushel) | bu/ac |
| crop only yield kg ha | This yield is based on the crop area. Crop kernel/seed harvested at crop harvest in kg/ha (at standardized moisture for corn 15.5%, wheat/soybean 13%) | kg/ha |
| whole plot yield bu A | This yield is based on including the area of the 15-foot wide prairie strips in the denominator of the yield calculation (at standardized moisture for corn 15.5%, wheat/soybean 13%). | bu/ac |
| whole plot yield kg ha | This yield is based on including the area of of the 15-foot prairie strips in the denominator of the yield calculation (at standardized moisture for corn 15.5%, wheat/soybean 13%). | kg/ha |
| Year | crop year |
| Protocols |
|---|
| MCSE: Harvestable Biomass |
| Agronomic Yields |
Data Excerpt
| date | treatment | replicate | crop | crop_only_yield_bu_a | crop_only_yield_kg_ha | whole_crop_yield_bu_a | whole_crop_yield_kg_ha | year |
|---|---|---|---|---|---|---|---|---|
| 2022-07-21 | T3 | R5 | Triticum aestivum L. (*) | 60.0 | 4036.6 | 57.0 | 3834.77 | 2022 |
| 2022-07-21 | T4 | R1 | Triticum aestivum L. (*) | 26.5 | 1781.0 | 25.175 | 1691.95 | 2022 |
| 2022-07-21 | T3 | R2 | Triticum aestivum L. (*) | 63.4 | 4263.6 | 60.23 | 4050.42 | 2022 |
| 2022-07-21 | T3 | R4 | Triticum aestivum L. (*) | 62.2 | 4179.7 | 59.09 | 3970.715 | 2022 |
| 2022-07-21 | T4 | R2 | Triticum aestivum L. (*) | 27.6 | 1855.3 | 26.22 | 1762.535 | 2022 |